If there was a small empty space in the direct centre of the earth, and and object was placed in the direct middle of the empty space. Would it float and be in some kind of internal orbit? I'm not sure exactly what would happen to it
Why did you say a black hole is infinitely dense? Wouldn't a super massive black hole have a higher density than a normal black hole?
Also since not even light can escape a black hole could that level of force speed up a photon to a speed faster than the speed of light? For example if a photon was traveling right towards the black hole would its speed not increase as it got closer to the black hole?
2ndly no, it's just greater mass all in one spot. That's hole point of collapsing under once mass. All the forces which would normally hold stuff apart and give it a volume are over powered.
3rdly no, but the explanation why requires a more detailed explanation than I have provided here.
@ASKaPHYSICIST Initially there was an increase in mass, then there was an increase in pulsar activity, the accretion disk somehow started to form watery molecules and finally there was indeed a massive Gamma Ray Burst............ I did use a radiation shield.
@ASSHOLELA well no. The reason being that Newton's gravity was not supposed to affect light while black holes clearly do as they must in deed trap the light to be black. Ultimately i think Newton's law is not complex enough to deal with things like that.
The mathematics of the current money system created from the singularity 0 or nothing at all results in hyper inflation. Could it be that if you substitute expanding universe into into the space time gravity ect equations, we are actually 'falling' into a 'black hole' ?
A star, (qucik note without gravity we will go off in to space at 1000 miles per hour) 10 times the mass of our sun collapsing under its own gravitational weigth will eventually collapse producing a Supernova, if the star is truly collosal it wil produce a hypernova. Einstein's fabric of space and time tells us that object like the sun make a mark on this fabric but a black hole literaly breaks this fabric which is the space and time fabric of the four dimensions of our universe
@nicoeste8765 i wrote this myself and this is nothing, this is just basic information. Congratulations for your videos I study phisiscs, but very good i really enjoy them well done
@2icycrew BECAUSE THE ORBIT OF THE MOON IS SLOWER THAN THE ROTATION OF THE EARTH, SO THERE IS A GRAVITATIONAL DRAG: THE EARTH KEEPS SPINNING SLOWER AND THE MOON KEEPS ORBITING FASTER. FOR A FASTER OBJECT TO STAY IN ORBIT, IT MUST HAVE A GREATER DISTANCE FROM THE OBJECT ITS ORBITING AROUND, SO AS THE MOON GETS FURTHER AWAY AS IT SPEEDS UP.
@mathforphysics true, but that effect is minuscule. The sun will turn red giant before the moon has moved any significant amount because of that. However, the faster the orbit, the greater the gravitational wave emission, and so, once heavy objects get close enough together, like binary neutron stars, they merge quite rapidly.
@mathforphysics It is in deed. I could have been clearer. There is nothing fancy about it. If the moon and earth were perfectly spherical there wouldn't be an effect, but since they are slightly elongated by each others gravitational pull, they actually act on each other differently at any given phase of their rotation. If you want to know more look up 'Tidal locking '
About blackholes, what happens to the matter absorbed by the blackhole? is it not possible for it to escape if the mass absorbed it too great? also super sized black holes in the center of galaxies are supposed to be holding all solar systems together, why would you say it's not the black holes in the center that are holding the galaxy formation? i would say that if black holes were not holding the galaxies together they would not be positioned in the center but rather on some random position..
@tmierdna well, as the matter travels closer towards the singularity at the centre of the black hole, tidal forces start stretching it apart until it's but a string of individual particles (spagethification). Then it supposedly becomes one with the singularity. This is a big issue in physics as apparently two different things with the same mass falling into a black hole have exactly the same effect on it (Black hole information paradox).
Btw, the supermassive black holes do not hold our solar systems together. The collective mass of the gas and stars in our galaxy does ... and dark matter. Please have a look at my video on dark matter
THE WEBSTER DICITIONARY READS THAT THE SPEED LIGHT IS AN ELECTROMAGNETIC RADIATION IN THE WAVELENGTH RANGE INCLUDING INFRARED, VISIBLE, ULTRA VIOLET, AND X RAYS AND TRAVELING IN A VACUUM WITH THE SPEED OF ABOUT 186,281 MILES PER SEC. MOST SCIENTIST WOULD SAY APPROXIMATELY 186,000 MILES PER SEC. I FIND YOUR WORK FASCINATING, BUT ONE WOULD HOPE YOUR ELOQUENCE AND OBVIOUS DILIGENCE TOWARDS THE FACTS WOULD AT LEAST HAVE GIVEN US SOME ACCURRACY TOWARDS SOMETHING AS SIMPLE AS THE SPEED LIGHT.
@4ATIME2BE1 I gave you the speed in m/s i.e. METERS per second. I would appreciate you spend your time looking at videos more suited to your current stage of education. Thanks.
@4ATIME2BE1 Dude, you should first understand that the SI derived unit of speed is metre per second, m/s. Now since you are obviously from another continent m/s does not mean miles/second. m is short for metre and s is short for second. So c=300, 000, 000 m/s means 300 million metres per second.
Also a Mile is actually equal to ~ 1.609 Kilometres (1,600 Metres) and mps is short for miles per second. So c=300, 000 km/s ~ 186, 000 mps.
in truth? I don,t think scientist will never ever come up with just ~ONE~ theory of everything they would have to go back an infinate time to see how every partical got put together but they will figure out how the universe came to be but this is only one tiny piece of a never ending puzzle of infinate creation will humans last forever? & if we don,t? things will still be created and life too who can answer these questions? nobody now but if we live long enough? we might, its awesome at best!
Dear friend, I had one doubt - why do our Earth revolve around Sun in the way coming near to Sun and then after 6 months going away from Sun. And same happens with other planets also, must be in the same line of plane where they are pulled and thrown away when they cross this line.
since we do not know how a black hole formed in the middle of galaxys? its only common sense to realize that a black hole without a galaxy is a galaxy turned inside out" and vice versa if we could go into the black hole in the middle of our galaxy? we would find just a black hole and another universe and with the immense gravity it makes new gases to create new stars in the universe thats turned inside out but it go,s on this way forever inside that universe is another and another forever think!
@ASKaPHYSICIST well? not exactly circular but a forever process" because there is no doubt that space n time are infinately old? this is not a thing that just happens a few times but forever its of course impossible to know for when we die we may wake up a baby in the same universe in a different time which I believe is true this is how we were born for why was we born when we were? why not 1,000 yrs, ago or 1,000 yrs, from now because we can only live one life at a time never to know the past,
@ASKaPHYSICIST well? to me space is always creating sub atomic particals? and in the infinate past it had to have created some kind of of a system, and its probabley been repeating itself indefinately but in slightly different ways for longer than we can ever know but I must admit? I sure don,t know it all" but I do believe that space is forever and particals being created? and its been repeating itself inwards & outwards in different ways forever but its a theory I sure don,t know how? or why:}
@dalhar20 it has to do with the pair production of virtual particles ... It's too advanced for me to cover yet. If you re interested though, try reading up on hawking radiation
AskAphysicist.If millions of cosmic rays are colliding with earths atmosphere on the daily,why don't we find a way to tap into that energy and use it as a power source?Do you think this would be plausable?Also,What do you think about Hawkings comments about how matter can be created from nothing because of the gravity of law.Is there proof of this?or is it just a theory?Is he suggesting something can appear from nowhere if gravity is present,or is he theorizing about pre big bang conditions?
@ASKaPHYSICIST Can you give me a list of all the methods of detecting black holes, or give me a link that provides in depth information on black hole detection?
@blackashell13 I'm not sure I agree with glok6. The two BHs would merge, but before they do, they would spiral around each other, loosing energy in the form of gravitational waves in the process. The resulting black hole might therefore actually be less massive from what I heard.
so black holes basically hordes all in its path....so matter really doesn't go anywhere like a worm hole (which i would love to know how they work if they exist). Dose it just crush it into nothing or make it into elements? thanks
@PsychoPyro86 before any piece of matter reaches the centre of the BH it will have been reipped apart to its most fundamental constituends (look up spaghettification). As they reach the centre even they will cease to exist and only there mass is conserved, increasing the mass of the BH. But I'm no expert on that really.
Seven miles a second Earth escape Velocity was a way to introduce the explanation the graphics as well how do we know a black hole isnt near by after all it would take us years to notice any deviation due to the speed light reaches earth hehe
You're like a cross between Sheldon Cooper and Gman :D
Anyway, I want to be a Physicist. I've always had the interest and I'm willing to do the work it takes to get to your level. My question is: What is it like to be a Physicist?
Well, I can't speak for everyone, but for me studying physics is like ascending into a higher form of existence where you more and more come to truly understand the world around you and see things for what they really are. Not only that, but simply learning to think analytically and to apply the scientific method changes your whole approach to every day life. I wouldn't wan to do anything else.
It is hard work though. Still, don't limit yourself to my level ;)
Hard work is fine with me! As long as I get to do what I love and learn more about the universe :) I have a mind for physics anyway. I've always seen and analyzed everyday things like sound or light. I always stared out of the school bus window thinking about that instead of other things. Usually this understanding comes very easily for me. I came to some of the same conclusions as Einstein but in a different way!
thats a good answer, im far for a physicist but i can really relate to what you mean by higher form of existence, even though i only watch videos like this because they fascinates me greatly :)
@Lensk15 A form of measurment invented by the british empire, then abandoned by the british empire, retained by the americans and still used by americans....
inches, feet, yards and miles. Very akward to wrok with.
@Lensk15 A form of measurment invented by the british empire, then abandoned by the british empire, retained by the americans and still used by americans....
inches, feet, yards and miles. Very akward to work with.
Who says its a mystery of how SMBH got at the center of galaxies. I think its quite simple. The blackholes came before the galaxies.
After the universe cooled to allow for the basic elements. There must have been a cavalcade of Super massive stars due to the abundance of hydrogen. These stars are short lived and created stellar blackholes. The massive amounts of BH's in near proximity = overtime Supermassive BH's. Thats just what i think and its not impossible
Well, that is an interesting hypothesis, but essentially you have just exchanged one question for another: Why would the early universe form such super massive stars?
@ASKaPHYSICIST - I thought after the universe cooled enough to allow for basic elements. It was formed of mostly hydrogen and helium. The perfect breeding ground for stars. Those stars would have plenty of fuel and would be in close proximity. Since Super Massive and Hypermassive stars dont last long they would super and hypernova. Some into Neutron and Pulsars some into Blackholes. In a relativly short time the first breed would die and the remnant blackholes would merge. Like mercury pooling.
Don't get me wrong, I'm sure there are merits to your theory, but still, unless we find direct evidence for it or device a model that strongly indicates hat this is the mechanism it's not conclusive and the super massive black holes remain a mystery.
@ASKaPHYSICIST i was wondering if you can make a video about Magnatars. Im still a little fuzzy about the differences between them and pulsar/neutron stars.
Possibly because there were large amounts of matter and energy very close together? Although that's simple logic. I bet you've either thought of that or that it would make no difference.
In the event horizon objects are traveling faster than the speed of light. we know this because we can't see any light inside it hence the "black" hole. However I just realized that objects that travel faster than the speed of light actually go backwards in time. So what would happen in terms of time if one would to be sucked into one? Would time stand still from my perspective?
So black holes have such a powerful gravitational pull becuase essentially the distance to the centre of the gravitation pull of the object has been decreased? This makes alot more sense. How are black holes shaped then? Are they like 3D spheres pulling all matter to one point or are they are usually depicted as cone shaped where matter seems to fall into them (simular to a bath plug sucking water down it)?
A question. Does gravity increase as density grows? Logic sense says it does thats why black holes have such gravitational pull. But why does this formula says nothing about density or volume then? F=G.(m1.m2)/r². According to this formula a black hole has the same gravitational pull as a star?
Good question, but no, the garvitational force does not increase with the density of an object. The formula F=G.(m1.m2)/r² can be applied to Black holes, as they do have mass.
However, since black holes are so dense, i.e. the mass of a star in a tiny point, you can get very close to them, thus making r² very small which would give you a high F.
If the sun would suddenly turn into a black hole, in regards to our gravitational pull towards it, we should not notice any difference.
Isn't the term 'black hole' a bit of a misnomer? I was under the impression they are the next stage of a neutron star, ie, an object, not a hole, of infinite mass.
Another question is: Can a black hole get weaker or stronger? It makes sense for them to gain strength, but can they get TOO full of material and possibally spew material back out maybe? Any idea I had is that a supermassive black holes are the opposite to the big bang. Maybe one day all the black holes will combine and suck ALL material into it., then sometype of reaction would happen to explode or blow all the material back out again = The Big Bang! Thats my idea anyway.
@leahcimrac yes, supermassive black holes spew out huge streams of matter, with as much energy as several BILLION black holes, so insane. U gotta watch the video titled "The Largest Black Holes in the Universe," it is exactly 18:48 long. It is so mind boggling check it out it'll answer a lot of your questions, but watch all of it tho cuz towards the middle/end it gets soooo insane.
thanks. I was watching a documentary on black holes today actually and their relationship to galzxy formation. Alot of these documentarys seem to be very overdramatic, saying we're all donno die in many different ways. lol, but I think its too early to talk about things we don't completely understand yet.
I read that supermassive black holes can collide with each other and create even large ones. For example Andromeda will eventially collide with the Milky Way and it has been said that the two black holes at the centre will merge into one. I'm wondering what your thoughts are on this?
Excellent. I like how you discuss escape velocity. I am very curious about the Hawking Radiation. How does it escape? Especially if light is both a particle and wave with relatively no mass, how does it become trapped but radiation is released/escapes?
I have a question about the event horizon. It is said that an if a viewer far away enough from a black hole not to get pulled in would watch an object pass the event horizon, the object would appear to the viewer to slow down until it just stops moving. How is it possible that the object halts motion in stead of vanishing, since no light can bounce off the object (can't escape the gravitational pull)? Wouldn't the object appear to diminish in luminance while appearing motionless then disappear?
hey! gr8888 video...so, atlast m able to clear ma basics...by the what are u doin professionally..(U talks like very experienced physicist)...Its fun and informative video..I'll be lookin forward for more videos from you! thanx ya!!!
A query about the theory of space "bending" or being "dented" by the stars and planets etc within it (possible explanation of gravity) - how can this be if space is a vacuum, and not made of any type of matter?
well, first of all, space isn't really all empty. There is always a residual energy density. There is no perfect vacuum ... I don't think that's relevant to the question though.
I could try to piece an explanation together frommy current understanding, but I'm doing a course on general relativity this year, which should enable me to tell you what's going on exactly.
ASKaPHYSICIST - You've misunderstood my "joke" re the blondes, I wasn't referring to their intelligence at all - in fact, that didn't even occur to me (and I well know hair colour has nothing to do brain power). I would explain, but then you would probably think me rude. Sorry, I did not mean to offend.
"...not only has nobody ever found an event horizon; there is no laboratory evidence that such things exist. All reports of black holes being found are just wishful thinking - patently false ? unless you can provide the coordinates of a verified infinitely dense point-mass singularity and a verified event horizon. But there are of course, as you know, no such coordinates, because no black holes have ever been found." ~ Stephen Crothers
You're doing a great disservice to mankind if you can't make your theory understandable or acceptable to a 7 year old. Your phds mean nothing when you spout complete BS. The reality is your entire conceptual universe breaks down whenever anybody PHD or not challenges your BS. Again, let me make this clear, you are full of it and everyone who claims that they found a black hole is a fraud. Good luck teaching children this crap cause phd or not, they just aren't buying the Black Hole BS
an arrogant abusive dick...lol nice one Jan ......i dont understand why people have to act in this manner and bring such negativity, oh well what are you going to do
ahhh a typical american stereotype, close mindedness and this guy demonstrates that. Criticism, fine but his arrogance and hostility is what gets on my nerves
Hey bro i got a quick Q for you get back to me....
The upgrades on the hubble telescope have taken some new photos of the universe and some photos of stars are like 40,000 light years away.... and my question is.... how accurate can these pictures to be to us because it takes the light 40,000 years to get here making the photos 100 million years old and how the galaxy looks on photos could be drastically different to this moment or have the a way around that n it is accurate?
sorry, I dont get how you got to 100 million years.
either way, when ever you look at something, you're only seing how it looked like when the light left that object. It's not a matter of accuracy, bit just of accepting that what we see in the telescopes lies way in the past. For all we know those stars might not even exist anymore.
I now understand WHAT causes black holes, but WHY does the destruction of a star cause them? When the mass of the star was annihilated, wouldn't any gravitational force in association with the star be devoid caused by the lack of density? Please answer, thank you.
The whole point is that the mass of the star is not anhilated but conserved. The tiny point that remains contains all the mass the star ones had and thus has an equally strong gravitational pull. As for density, well, in the context of black holes i guess we need to reconsider the concept of density unless we're fine with the thought that they are inifintely dense.
That makes sense, but why? Why is the mass of the star conserved rather than destroyed, or spread out, much like in an explosion? I don't understand how while the components of the star project afar, as in 5:28, the outcome is, well, a single point of zero volume, but infinite density, or better known as a black hole.
well, yes, in the super nova. lots of mass of the star is thrown out, but not all of it. There's still plenty left to make the black hole.
It's just that the forces that would normally keep stuff from collapsing undergarvity are not enough anymore. So, collapsing into a single point is the only option.
@SkunkHunt mathematicians use imaginary numbers don't they? i honestly don't understand what you're on about when you say black holes are BS.. Are you really that ignorant?
Actually, you can't really orbit the black hole within the event horizon. Space becomes time-like and all attempted motion will only serve to take you closer to the centre.
wat happens when a black hole sucks another black? and a question out of the topic if we were able to control dark matter could we be able to seperate and build galaxies whenever we want?
Heyyy if you could answer this thata bee sick i got a quick question.....i c people are thinking bout going to mars and such and i was wondering if you could somehow get a supply of oxygen if you brought a bunch of trees with you? and isnt it to hot to go to mars?
you could use trees to recycle the air we breath. Of course what trees do is to convert Carbon dioxide into something we can breath. So your idea would only work on a planet with an atmosphere made greatly from CO2. I don't think that's the case on mars. and why would it be hot on mars? it's further from the sun.
True enough but i heard theres some deadlier storms there and would b hard to avoid since nasa is thinking of actually going...so its possible to recreate oxygen from having plants on a ship? and if you know why the moon doesnt get pulled into the the earth...i kno some whack questions but hit me up if you kno
I wonder, do we really KNOW that the source of a black hole is a singularity? (a SINGLE POINT IN SPACE WITH NO VOLUME, OF INFINITE DENSITY?)
What if, when matter is sucked into a black hole to the sing, it is COMPACTED SO densely that over time but not inifinitely densely, the VOLUME that it is accreted is so small cuz its so dense that even over billions of yrs its size (volume) grows so slowly that it simply hasnt grown large enough to surpass the event horizon and be observed?
Will the cannonball keep rising forever? On which vectorial will it travel?
In other words.... once the object escapes the earth's gravity, it is now being pulled by the gravity of distant objects of the universe, right? Is there not, therefore, a CENTER-OF-MASS of the universe which will direct the object upon its escape from the earth's gravity? Think about it....... thanks..
Thinking of the universe as a system.. once it escapes earth's velocity then it would be subject to the grav forces of all other mass in the universe. The CENTER OF MASS OF THE UNIVERSE would be pulling on said object once it escapes earth's gravity. But I guess larger massed objects at closer distances to the escapee object would influence/pull it more. Can the center of mass of the universe be calculated by the "deflection" of an object propelled from earth once it escapes earth's velocity.
depending how you shoot it, the object might end up orbiting the sun still. If you shoot it even further, it might still orbit the centre of our galaxy. Beyond that, the matter in the universe should be so dispersed, it's influence should be negligible. The object could travel 1000s of light years before coming close to any other object, if at all.
thx for the info dude... talking about holes xD can you explaine whats a worm holes and time travle i know it's far from this topic but i find i think it's interesting and i'm curious to know... thx again :)
about black holes ... would you think a black hole could have made what we called the big bang.... i think it is possible because if you fill a balloon it will pop.. so why not a black hole??
maybe some black holes cancel themselves out i dont think that would happen then the mass would just be a sun agean but idk.. ambe a larger sun.. or they can just pop under the heavy load aka the psi and burst. hell there are how many kinds of suns mybe a black home makes a new kind of sun ?
ok take 3 dif balloons blow them up to 30 psi one is small one is the long kind and the last is one you can tie to a rubber band and bounce around. small one gets to 10 then pops, the long one gets to 15 and pops the big one with the rubber band can go to the full 30
Not to get in depth on the singularity issue, but is the basic concept behind the singularity that the composition of the singularity is not mass but energy... in other words, you have lots of matter being sucked into the singularity (at the center of the black hole), and it gets sucked in but when it contacts the singularity, that matter is converted into energy? & because energy itself requires no volume to exist, that explains how you can incorporate a butt load of matter into a single point?
well, i don't know what exactly happens to the matter as it falls in. The reason the black holes form in the first place is basically that the very aspect of matter that stops things from occupying the same space (i.e. the nature of fermionic particles) is not enough to stop the gravitational collapse of a star. What it does to the particles in the process, i don't know.
of course, your reasoning is sound. Photons are bosons and hence could take up the same space.
@ASKaPHYSICIST Not in our universe, but possibly in some other universe. Perhaps they suck up matter until the energy reaches a certain threshold level where it becomes sufficient to cause the initiation of a new world-line?
there is so much that impresses me.... not the least of which is the accent you obviously have, yet you enunciate and articulate every word in english more lucidly than 99% of americans can speak. by god, keep it up..... and the media videos to back up your points....... very nice......
Please, PLEASE, continue this charitable education of your obviously elevated understanding of these cosmically important phenomenona.. I swear, you are a rare gem among Youtube and a gem in this scholarly unconventionaly medium....... I've immense respect for you..
my God you are so awesome... there is so much more substantive praise i could type here.
my question at the moment is, regarding the "accretion disc" phenomenon at above cited intervals of your video. is that genuine time lapsed photography? or simply an "artist's rendition". doesn't matter what the answer is, i just want the truth. there is so much more i have to say to you.. i am a PhD in molecular bio but it bores me. astrophysics has always fascinated. you explain it so well
well, thank you very much, I really wasn't aware my work deserves that much praise but thanks.
I actually have great respect for all biologist, ever since I talked to microbiologist at my uni. Seems to me, while us physicists get to learn about the fascinating secrets of the universe, you have to learn about all the horrible diseases and microbes and all the disgusting things that come with living beings, the rest of us rather remain ignorant of. You guys really have the harder job.
As for the accretion disks, I'm pretty sure these aren't actual recordings, but artistic impressions based on models. The pictures we take are probably much more pixely.
If the hawking radiation theory is correct, does the particle that escapes the black hole exceed the speed of light?
DJChronicx 2 weeks ago
Zat vas EXELLENT! I especially liked the hole-puncher in space!-Classic!!
bdogshredder 3 weeks ago
@bdogshredder thanks, I thought that was quite clever myself *pat on the back*
ASKaPHYSICIST 3 weeks ago
you know you dont have to speak like that to be smart
E5YER1 1 month ago
@E5YER1 How would you like me to speak instead?
ASKaPHYSICIST 1 month ago
Comment removed
E5YER1 1 month ago
If there was a small empty space in the direct centre of the earth, and and object was placed in the direct middle of the empty space. Would it float and be in some kind of internal orbit? I'm not sure exactly what would happen to it
cronicd21 3 months ago
Why did you say a black hole is infinitely dense? Wouldn't a super massive black hole have a higher density than a normal black hole?
Also since not even light can escape a black hole could that level of force speed up a photon to a speed faster than the speed of light? For example if a photon was traveling right towards the black hole would its speed not increase as it got closer to the black hole?
Thanks for the video! :)
Dan0101010101010 3 months ago
@Dan0101010101010 1stly, yes, it would be weightless.
2ndly no, it's just greater mass all in one spot. That's hole point of collapsing under once mass. All the forces which would normally hold stuff apart and give it a volume are over powered.
3rdly no, but the explanation why requires a more detailed explanation than I have provided here.
ASKaPHYSICIST 3 months ago
@ASKaPHYSICIST Thanks for the reply mate! :)
Dan0101010101010 2 months ago
BEAUTIFUL EYES
aFemale1 3 months ago
My girlfriend has a black hole and I am gonna probe it tonight!
leahcimrac 4 months ago
@leahcimrac careful, once you're in there's no way out.
ASKaPHYSICIST 4 months ago
@ASKaPHYSICIST I was sucked in and spaghettified.
leahcimrac 4 months ago
@leahcimrac I bet there was quite a Gamma Ray Burst
ASKaPHYSICIST 4 months ago
@ASKaPHYSICIST Initially there was an increase in mass, then there was an increase in pulsar activity, the accretion disk somehow started to form watery molecules and finally there was indeed a massive Gamma Ray Burst............ I did use a radiation shield.
leahcimrac 4 months ago
according to newton's laws, can black holes exist?
ASSHOLELA 4 months ago
@ASSHOLELA well no. The reason being that Newton's gravity was not supposed to affect light while black holes clearly do as they must in deed trap the light to be black. Ultimately i think Newton's law is not complex enough to deal with things like that.
ASKaPHYSICIST 4 months ago
@ASKaPHYSICIST I'd say that is as explicit as we have to get.
ASKaPHYSICIST 4 months ago
Comment removed
ASSHOLELA 4 months ago
The mathematics of the current money system created from the singularity 0 or nothing at all results in hyper inflation. Could it be that if you substitute expanding universe into into the space time gravity ect equations, we are actually 'falling' into a 'black hole' ?
variezn34gm 5 months ago
@variezn34gm money system?
ASKaPHYSICIST 5 months ago
to me a black hole is a illusion.
i dont think the mass of the dying star created the black hole in the first place .
i think the energy surrounding the black hole created the black hole and feeds the black hole.
i think if you draw a line from quasar to quasar .
we will see the smaller black holes are where the lines are entangled in a knot.
ImmortalUniverse 5 months ago
@ImmortalUniverse fascinating
however, science isn't about what we think. It's about what we can prove.
ASKaPHYSICIST 5 months ago 2
@ASKaPHYSICIST
true ,but it starts with speculation and thoughts of humans.
without thoughts of multiple man . we wouldnt have a man on the moon.
its good idiots like me speculate.
and it becomes fact when someone listened and worked the ideas out.and tested them.
ImmortalUniverse 5 months ago
when people ,scientist spek of string theory and m theory,
they come to this point where they speak of membrains or brain
and the idea of different dimensions
im thinking when multiple universes collide, these membrains collide.
you can sometimes get a knot ,where the energy is massive.
in our dimension then you see the black hole.
lol
ImmortalUniverse 5 months ago
A star, (qucik note without gravity we will go off in to space at 1000 miles per hour) 10 times the mass of our sun collapsing under its own gravitational weigth will eventually collapse producing a Supernova, if the star is truly collosal it wil produce a hypernova. Einstein's fabric of space and time tells us that object like the sun make a mark on this fabric but a black hole literaly breaks this fabric which is the space and time fabric of the four dimensions of our universe
nicoeste8765 5 months ago
@nicoeste8765 i wrote this myself and this is nothing, this is just basic information. Congratulations for your videos I study phisiscs, but very good i really enjoy them well done
nicoeste8765 5 months ago
Subscribed ;)
SaSguy45 6 months ago
WHY IS THE MOON GETTING FURTHER AWAY FROM EARTH
2icycrew 6 months ago 2
@2icycrew BECAUSE THE ORBIT OF THE MOON IS SLOWER THAN THE ROTATION OF THE EARTH, SO THERE IS A GRAVITATIONAL DRAG: THE EARTH KEEPS SPINNING SLOWER AND THE MOON KEEPS ORBITING FASTER. FOR A FASTER OBJECT TO STAY IN ORBIT, IT MUST HAVE A GREATER DISTANCE FROM THE OBJECT ITS ORBITING AROUND, SO AS THE MOON GETS FURTHER AWAY AS IT SPEEDS UP.
ASKaPHYSICIST 6 months ago
@ASKaPHYSICIST thank you.
2icycrew 6 months ago
@ASKaPHYSICIST
I thought the moon was getting closer because it is radiating gravitational energy via gravitational waves.
mathforphysics 5 months ago
@mathforphysics true, but that effect is minuscule. The sun will turn red giant before the moon has moved any significant amount because of that. However, the faster the orbit, the greater the gravitational wave emission, and so, once heavy objects get close enough together, like binary neutron stars, they merge quite rapidly.
ASKaPHYSICIST 5 months ago
@ASKaPHYSICIST
Is gravitational drag a Newtonian effect? I haven't heard of this before.
mathforphysics 5 months ago
@mathforphysics It is in deed. I could have been clearer. There is nothing fancy about it. If the moon and earth were perfectly spherical there wouldn't be an effect, but since they are slightly elongated by each others gravitational pull, they actually act on each other differently at any given phase of their rotation. If you want to know more look up 'Tidal locking '
ASKaPHYSICIST 5 months ago
Nice video by the way ;)
tmierdna 6 months ago
About blackholes, what happens to the matter absorbed by the blackhole? is it not possible for it to escape if the mass absorbed it too great? also super sized black holes in the center of galaxies are supposed to be holding all solar systems together, why would you say it's not the black holes in the center that are holding the galaxy formation? i would say that if black holes were not holding the galaxies together they would not be positioned in the center but rather on some random position..
tmierdna 6 months ago
@tmierdna well, as the matter travels closer towards the singularity at the centre of the black hole, tidal forces start stretching it apart until it's but a string of individual particles (spagethification). Then it supposedly becomes one with the singularity. This is a big issue in physics as apparently two different things with the same mass falling into a black hole have exactly the same effect on it (Black hole information paradox).
ASKaPHYSICIST 6 months ago
Btw, the supermassive black holes do not hold our solar systems together. The collective mass of the gas and stars in our galaxy does ... and dark matter. Please have a look at my video on dark matter
ASKaPHYSICIST 6 months ago
THE WEBSTER DICITIONARY READS THAT THE SPEED LIGHT IS AN ELECTROMAGNETIC RADIATION IN THE WAVELENGTH RANGE INCLUDING INFRARED, VISIBLE, ULTRA VIOLET, AND X RAYS AND TRAVELING IN A VACUUM WITH THE SPEED OF ABOUT 186,281 MILES PER SEC. MOST SCIENTIST WOULD SAY APPROXIMATELY 186,000 MILES PER SEC. I FIND YOUR WORK FASCINATING, BUT ONE WOULD HOPE YOUR ELOQUENCE AND OBVIOUS DILIGENCE TOWARDS THE FACTS WOULD AT LEAST HAVE GIVEN US SOME ACCURRACY TOWARDS SOMETHING AS SIMPLE AS THE SPEED LIGHT.
4ATIME2BE1 7 months ago
@4ATIME2BE1 I gave you the speed in m/s i.e. METERS per second. I would appreciate you spend your time looking at videos more suited to your current stage of education. Thanks.
ASKaPHYSICIST 7 months ago 4
@4ATIME2BE1 check ... wts the number in Miles per hour
147m 7 months ago
@4ATIME2BE1 you fail.
FalseNomen 6 months ago
@4ATIME2BE1 Dude, you should first understand that the SI derived unit of speed is metre per second, m/s. Now since you are obviously from another continent m/s does not mean miles/second. m is short for metre and s is short for second. So c=300, 000, 000 m/s means 300 million metres per second.
Also a Mile is actually equal to ~ 1.609 Kilometres (1,600 Metres) and mps is short for miles per second. So c=300, 000 km/s ~ 186, 000 mps.
tmierdna 6 months ago
in truth? I don,t think scientist will never ever come up with just ~ONE~ theory of everything they would have to go back an infinate time to see how every partical got put together but they will figure out how the universe came to be but this is only one tiny piece of a never ending puzzle of infinate creation will humans last forever? & if we don,t? things will still be created and life too who can answer these questions? nobody now but if we live long enough? we might, its awesome at best!
55painterman 9 months ago
Dear friend, I had one doubt - why do our Earth revolve around Sun in the way coming near to Sun and then after 6 months going away from Sun. And same happens with other planets also, must be in the same line of plane where they are pulled and thrown away when they cross this line.
raja030in 9 months ago
since we do not know how a black hole formed in the middle of galaxys? its only common sense to realize that a black hole without a galaxy is a galaxy turned inside out" and vice versa if we could go into the black hole in the middle of our galaxy? we would find just a black hole and another universe and with the immense gravity it makes new gases to create new stars in the universe thats turned inside out but it go,s on this way forever inside that universe is another and another forever think!
55painterman 9 months ago
@55painterman seems a bit circular.
ASKaPHYSICIST 9 months ago
@ASKaPHYSICIST well? not exactly circular but a forever process" because there is no doubt that space n time are infinately old? this is not a thing that just happens a few times but forever its of course impossible to know for when we die we may wake up a baby in the same universe in a different time which I believe is true this is how we were born for why was we born when we were? why not 1,000 yrs, ago or 1,000 yrs, from now because we can only live one life at a time never to know the past,
55painterman 9 months ago
@55painterman I meant your logic. Coming up with a system that keeps creating itself in the past indefinitely is not an explanation of its existence.
ASKaPHYSICIST 9 months ago
@ASKaPHYSICIST well? to me space is always creating sub atomic particals? and in the infinate past it had to have created some kind of of a system, and its probabley been repeating itself indefinately but in slightly different ways for longer than we can ever know but I must admit? I sure don,t know it all" but I do believe that space is forever and particals being created? and its been repeating itself inwards & outwards in different ways forever but its a theory I sure don,t know how? or why:}
55painterman 9 months ago
@55painterman thing about science is that it doesn't matter at all what you believe. It only matters what you can prove.
ASKaPHYSICIST 9 months ago
Ok so zero volume but massive density. Trippy stuff. And if a black hole sucks in light how can it emit radiation or even light.
dalhar20 9 months ago
@dalhar20 it has to do with the pair production of virtual particles ... It's too advanced for me to cover yet. If you re interested though, try reading up on hawking radiation
ASKaPHYSICIST 9 months ago
Black holes, dark energy, dark matter, etc etc...
I'm going to go with the Electric Theory......
It doesn't need a bunch of bullshit to hold it together.
The bigbang.....
I may as well worship the Sun, you people have made a farce of science and education.
I can say this with some confidence, having only several dozen hours in googleschool to learn the fundamentals of what is this issue.
Electric Model= Rational, Reasonable, Probable, Repeatable, Explainable.
Conventional Model= Paling Fast.
alaric63 10 months ago
@alaric63 you are hilarious.
ASKaPHYSICIST 9 months ago
doesnt the explosion of a supernova create a neutron star, and the explosion of the neutron star lead to the creation of a black hole?
because you said the explosion of a big sun makes a black hole but didnt inculde the formation of the neutron star
bumsukify 1 year ago
@bumsukify not sure if the neutron star has to be a middle stage. I'm sure it would be easy to read up somewhere.
ASKaPHYSICIST 9 months ago
Razorfarts!
DerFauxRitter 1 year ago
AskAphysicist.If millions of cosmic rays are colliding with earths atmosphere on the daily,why don't we find a way to tap into that energy and use it as a power source?Do you think this would be plausable?Also,What do you think about Hawkings comments about how matter can be created from nothing because of the gravity of law.Is there proof of this?or is it just a theory?Is he suggesting something can appear from nowhere if gravity is present,or is he theorizing about pre big bang conditions?
NamingTheMonster 1 year ago
about black holes, are they actually holes or just huge balls
lovehate399 1 year ago
@lovehate399 well, they're not actually holes no ... they're not balls either.
ASKaPHYSICIST 9 months ago
@lovehate399 They are singular points of infinite density
ASKaPHYSICIST 9 months ago 3
@ASKaPHYSICIST Can you give me a list of all the methods of detecting black holes, or give me a link that provides in depth information on black hole detection?
emeralddreams888 7 months ago
@lovehate399 My balls are huge :D
denis551988 6 months ago
why are planets round, is it possible for them to be in other shapes?
aprecon2012 1 year ago
What would happen if 2 black holes came in contact whit each outer???
blackashell13 1 year ago
@blackashell13 I'm not sure I agree with glok6. The two BHs would merge, but before they do, they would spiral around each other, loosing energy in the form of gravitational waves in the process. The resulting black hole might therefore actually be less massive from what I heard.
ASKaPHYSICIST 1 year ago
so black holes basically hordes all in its path....so matter really doesn't go anywhere like a worm hole (which i would love to know how they work if they exist). Dose it just crush it into nothing or make it into elements? thanks
PsychoPyro86 1 year ago
@PsychoPyro86 before any piece of matter reaches the centre of the BH it will have been reipped apart to its most fundamental constituends (look up spaghettification). As they reach the centre even they will cease to exist and only there mass is conserved, increasing the mass of the BH. But I'm no expert on that really.
ASKaPHYSICIST 1 year ago
Thoroughly enjoyed this. This is what the internet should be used for, I appreciate your effort in doing this for everyone. Much respect.
venslugen 1 year ago 18
Seven miles a second Earth escape Velocity was a way to introduce the explanation the graphics as well how do we know a black hole isnt near by after all it would take us years to notice any deviation due to the speed light reaches earth hehe
philquinton 1 year ago
Dude feels like a marylin manson batman
FilmPA 1 year ago
You're like a cross between Sheldon Cooper and Gman :D
Anyway, I want to be a Physicist. I've always had the interest and I'm willing to do the work it takes to get to your level. My question is: What is it like to be a Physicist?
quazarphazar 1 year ago
@quazarphazar lol, thanks
Well, I can't speak for everyone, but for me studying physics is like ascending into a higher form of existence where you more and more come to truly understand the world around you and see things for what they really are. Not only that, but simply learning to think analytically and to apply the scientific method changes your whole approach to every day life. I wouldn't wan to do anything else.
It is hard work though. Still, don't limit yourself to my level ;)
ASKaPHYSICIST 1 year ago
Hard work is fine with me! As long as I get to do what I love and learn more about the universe :) I have a mind for physics anyway. I've always seen and analyzed everyday things like sound or light. I always stared out of the school bus window thinking about that instead of other things. Usually this understanding comes very easily for me. I came to some of the same conclusions as Einstein but in a different way!
quazarphazar 1 year ago
@ASKaPHYSICIST
thats a good answer, im far for a physicist but i can really relate to what you mean by higher form of existence, even though i only watch videos like this because they fascinates me greatly :)
smurfaka 1 year ago
Cool stuff. Congrats. Although your voice is kinda annoying :0)
WaxyBoy 1 year ago
The speed of light figure quoted at 3.01 is correct in mS-1 but in error in mph.
gamesbok 2 years ago
I'm not sure what you're saying, but the speed of light is about 300,000,000 m/s.
ASKaPHYSICIST 2 years ago
@ASKaPHYSICIST Isn't it 186,000 m/s? 300,000,000 mph....
FilmPA 1 year ago
@FilmPA nope. I'm afraid we don't use empirical units in physics.
ASKaPHYSICIST 1 year ago 2
@ASKaPHYSICIST empirical? lmao
Lensk15 1 year ago
Comment removed
Dillingerman1 1 year ago
@Lensk15 A form of measurment invented by the british empire, then abandoned by the british empire, retained by the americans and still used by americans....
inches, feet, yards and miles. Very akward to wrok with.
Dillingerman1 1 year ago
This has been flagged as spam show
@Lensk15 A form of measurment invented by the british empire, then abandoned by the british empire, retained by the americans and still used by americans....
inches, feet, yards and miles. Very akward to work with.
Dillingerman1 1 year ago
@ASKaPHYSICIST I thought the speed of light was 300,000 km/s
dustynmaster 1 year ago
@dustynmaster it is. 300,000 km/s = 30,000,000 m/s = 30,000,000,000 mm/s etc.
ASKaPHYSICIST 1 year ago
Schönes Video, du solltest allerdings an deinem "th" arbeiten.
Tossek86 2 years ago
Who says its a mystery of how SMBH got at the center of galaxies. I think its quite simple. The blackholes came before the galaxies.
After the universe cooled to allow for the basic elements. There must have been a cavalcade of Super massive stars due to the abundance of hydrogen. These stars are short lived and created stellar blackholes. The massive amounts of BH's in near proximity = overtime Supermassive BH's. Thats just what i think and its not impossible
ORACLE063 2 years ago
Well, that is an interesting hypothesis, but essentially you have just exchanged one question for another: Why would the early universe form such super massive stars?
ASKaPHYSICIST 2 years ago
@ASKaPHYSICIST - I thought after the universe cooled enough to allow for basic elements. It was formed of mostly hydrogen and helium. The perfect breeding ground for stars. Those stars would have plenty of fuel and would be in close proximity. Since Super Massive and Hypermassive stars dont last long they would super and hypernova. Some into Neutron and Pulsars some into Blackholes. In a relativly short time the first breed would die and the remnant blackholes would merge. Like mercury pooling.
ORACLE063 2 years ago
Don't get me wrong, I'm sure there are merits to your theory, but still, unless we find direct evidence for it or device a model that strongly indicates hat this is the mechanism it's not conclusive and the super massive black holes remain a mystery.
ASKaPHYSICIST 2 years ago
@ASKaPHYSICIST i was wondering if you can make a video about Magnatars. Im still a little fuzzy about the differences between them and pulsar/neutron stars.
ORACLE063 2 years ago
Possibly because there were large amounts of matter and energy very close together? Although that's simple logic. I bet you've either thought of that or that it would make no difference.
quazarphazar 1 year ago
In the event horizon objects are traveling faster than the speed of light. we know this because we can't see any light inside it hence the "black" hole. However I just realized that objects that travel faster than the speed of light actually go backwards in time. So what would happen in terms of time if one would to be sucked into one? Would time stand still from my perspective?
leahcimrac 2 years ago
matter cannot travel faster than the speed of light
Adrenalx42 1 year ago
super massive black holes, very scientific.
WeastHamTiD 2 years ago
I agree, some terms in physics are given quite arbitrarily.
ASKaPHYSICIST 2 years ago
So black holes have such a powerful gravitational pull becuase essentially the distance to the centre of the gravitation pull of the object has been decreased? This makes alot more sense. How are black holes shaped then? Are they like 3D spheres pulling all matter to one point or are they are usually depicted as cone shaped where matter seems to fall into them (simular to a bath plug sucking water down it)?
leahcimrac 2 years ago
A question. Does gravity increase as density grows? Logic sense says it does thats why black holes have such gravitational pull. But why does this formula says nothing about density or volume then? F=G.(m1.m2)/r². According to this formula a black hole has the same gravitational pull as a star?
dqds 2 years ago
Good question, but no, the garvitational force does not increase with the density of an object. The formula F=G.(m1.m2)/r² can be applied to Black holes, as they do have mass.
However, since black holes are so dense, i.e. the mass of a star in a tiny point, you can get very close to them, thus making r² very small which would give you a high F.
If the sun would suddenly turn into a black hole, in regards to our gravitational pull towards it, we should not notice any difference.
ASKaPHYSICIST 2 years ago
Isn't the term 'black hole' a bit of a misnomer? I was under the impression they are the next stage of a neutron star, ie, an object, not a hole, of infinite mass.
karadan100 2 years ago
Another question is: Can a black hole get weaker or stronger? It makes sense for them to gain strength, but can they get TOO full of material and possibally spew material back out maybe? Any idea I had is that a supermassive black holes are the opposite to the big bang. Maybe one day all the black holes will combine and suck ALL material into it., then sometype of reaction would happen to explode or blow all the material back out again = The Big Bang! Thats my idea anyway.
leahcimrac 2 years ago
@leahcimrac yes, supermassive black holes spew out huge streams of matter, with as much energy as several BILLION black holes, so insane. U gotta watch the video titled "The Largest Black Holes in the Universe," it is exactly 18:48 long. It is so mind boggling check it out it'll answer a lot of your questions, but watch all of it tho cuz towards the middle/end it gets soooo insane.
rhcp4565 2 years ago
thanks. I was watching a documentary on black holes today actually and their relationship to galzxy formation. Alot of these documentarys seem to be very overdramatic, saying we're all donno die in many different ways. lol, but I think its too early to talk about things we don't completely understand yet.
leahcimrac 2 years ago
I read that supermassive black holes can collide with each other and create even large ones. For example Andromeda will eventially collide with the Milky Way and it has been said that the two black holes at the centre will merge into one. I'm wondering what your thoughts are on this?
leahcimrac 2 years ago
i have a little question concerning gravity
i always thought it was created by the massive mass not dense
so is it high dense that causes gravity or large mass
if it's dense so if somehow we had a little piece of a matter dense enough it would have gravity?
DamascusSwoard 2 years ago
Excellent. I like how you discuss escape velocity. I am very curious about the Hawking Radiation. How does it escape? Especially if light is both a particle and wave with relatively no mass, how does it become trapped but radiation is released/escapes?
p.s. thank you for your well done videos.
SpaceCoaster75 2 years ago
Very interesting. Not really into physics but your videos are informative for a non-science guy like me. The drawings help, lol.
Thanks for posting.
whoandtheha 2 years ago
Thanks for the comment, much appreciated.
ASKaPHYSICIST 2 years ago
I have a question about the event horizon. It is said that an if a viewer far away enough from a black hole not to get pulled in would watch an object pass the event horizon, the object would appear to the viewer to slow down until it just stops moving. How is it possible that the object halts motion in stead of vanishing, since no light can bounce off the object (can't escape the gravitational pull)? Wouldn't the object appear to diminish in luminance while appearing motionless then disappear?
trisky1234 2 years ago
hey! gr8888 video...so, atlast m able to clear ma basics...by the what are u doin professionally..(U talks like very experienced physicist)...Its fun and informative video..I'll be lookin forward for more videos from you! thanx ya!!!
Snapblast 2 years ago
A query about the theory of space "bending" or being "dented" by the stars and planets etc within it (possible explanation of gravity) - how can this be if space is a vacuum, and not made of any type of matter?
IncurableNostalgic 2 years ago
well, first of all, space isn't really all empty. There is always a residual energy density. There is no perfect vacuum ... I don't think that's relevant to the question though.
I could try to piece an explanation together frommy current understanding, but I'm doing a course on general relativity this year, which should enable me to tell you what's going on exactly.
hope it can wait
ASKaPHYSICIST 2 years ago
OK thanx, no rush, just something I was curious about.
IncurableNostalgic 2 years ago
Comment removed
IncurableNostalgic 2 years ago
The notion of blondes being of lesser intelligence is very ill conceived. Many women working in high positions in science are in fact blondes.
women who colour their hair to be blonde may well be though.
ASKaPHYSICIST 2 years ago
ASKaPHYSICIST - You've misunderstood my "joke" re the blondes, I wasn't referring to their intelligence at all - in fact, that didn't even occur to me (and I well know hair colour has nothing to do brain power). I would explain, but then you would probably think me rude. Sorry, I did not mean to offend.
IncurableNostalgic 2 years ago
Women who colour their hair blonde are commonly referred to as 'aeroplane blondes'.
Because they have a black box. :)
karadan100 2 years ago
can u please explain PLANET X???
umerali11 2 years ago
never heard of such a thing ... so no.
ASKaPHYSICIST 2 years ago
I have an other question.
If light can't get out of a black hole, why can gravitons still escape to do their gravity job?
Shouldn't they get stuck too? (with the result of the black hole not attracting other things with gravity )
thanks
Curixq 2 years ago
"...not only has nobody ever found an event horizon; there is no laboratory evidence that such things exist. All reports of black holes being found are just wishful thinking - patently false ? unless you can provide the coordinates of a verified infinitely dense point-mass singularity and a verified event horizon. But there are of course, as you know, no such coordinates, because no black holes have ever been found." ~ Stephen Crothers
SkunkHunt 2 years ago
I'm not convinced it's reasonable to use authoraty quotes on astrophysicsl topics from people who don't even have a phd.
ASKaPHYSICIST 2 years ago
You're doing a great disservice to mankind if you can't make your theory understandable or acceptable to a 7 year old. Your phds mean nothing when you spout complete BS. The reality is your entire conceptual universe breaks down whenever anybody PHD or not challenges your BS. Again, let me make this clear, you are full of it and everyone who claims that they found a black hole is a fraud. Good luck teaching children this crap cause phd or not, they just aren't buying the Black Hole BS
SkunkHunt 2 years ago
Look, I'm happy to answer all the questions you have about BHs to the best of my ability, but I will not enetertain this foolishness.
Try to explaining to a 7 year old why you're being such an arrogant abusive dick on youtube. I'm sure he/she would be equally confused by that.
ASKaPHYSICIST 2 years ago
an arrogant abusive dick...lol nice one Jan ......i dont understand why people have to act in this manner and bring such negativity, oh well what are you going to do
canascot02 2 years ago
ahhh a typical american stereotype, close mindedness and this guy demonstrates that. Criticism, fine but his arrogance and hostility is what gets on my nerves
canascot02 2 years ago
Hey bro i got a quick Q for you get back to me....
The upgrades on the hubble telescope have taken some new photos of the universe and some photos of stars are like 40,000 light years away.... and my question is.... how accurate can these pictures to be to us because it takes the light 40,000 years to get here making the photos 100 million years old and how the galaxy looks on photos could be drastically different to this moment or have the a way around that n it is accurate?
W123410 2 years ago
sorry, I dont get how you got to 100 million years.
either way, when ever you look at something, you're only seing how it looked like when the light left that object. It's not a matter of accuracy, bit just of accepting that what we see in the telescopes lies way in the past. For all we know those stars might not even exist anymore.
ASKaPHYSICIST 2 years ago
yea thats what im saying like for all we kno were getting a picture of that universe however many light years ago
W123410 2 years ago
WIll the moon collide with the Earth from gravity eventually?
insano7101 2 years ago
no, in fact, it s actually slowly drifting apart
ASKaPHYSICIST 2 years ago
Follow Up:
I now understand WHAT causes black holes, but WHY does the destruction of a star cause them? When the mass of the star was annihilated, wouldn't any gravitational force in association with the star be devoid caused by the lack of density? Please answer, thank you.
DillonNicholsonTV 2 years ago
The whole point is that the mass of the star is not anhilated but conserved. The tiny point that remains contains all the mass the star ones had and thus has an equally strong gravitational pull. As for density, well, in the context of black holes i guess we need to reconsider the concept of density unless we're fine with the thought that they are inifintely dense.
ASKaPHYSICIST 2 years ago
That makes sense, but why? Why is the mass of the star conserved rather than destroyed, or spread out, much like in an explosion? I don't understand how while the components of the star project afar, as in 5:28, the outcome is, well, a single point of zero volume, but infinite density, or better known as a black hole.
DillonNicholsonTV 2 years ago
well, yes, in the super nova. lots of mass of the star is thrown out, but not all of it. There's still plenty left to make the black hole.
It's just that the forces that would normally keep stuff from collapsing undergarvity are not enough anymore. So, collapsing into a single point is the only option.
ASKaPHYSICIST 2 years ago
It would be nice if you could show one of these points but you can't. Good luck with the charlatanism that is your black hole theory
SkunkHunt 2 years ago
@SkunkHunt mathematicians use imaginary numbers don't they? i honestly don't understand what you're on about when you say black holes are BS.. Are you really that ignorant?
trisky1234 2 years ago
Actually, you can't really orbit the black hole within the event horizon. Space becomes time-like and all attempted motion will only serve to take you closer to the centre.
moogenmeister 2 years ago
hmm, yes, it is in deed an example where the theory of garvity and general relativity make different predictions.
ASKaPHYSICIST 2 years ago
nice :)
godfather755 2 years ago
where does the black send all the things it sucks up
hubikhub2 2 years ago
wat happens when a black hole sucks another black? and a question out of the topic if we were able to control dark matter could we be able to seperate and build galaxies whenever we want?
theboywhoskates 2 years ago
Heyyy if you could answer this thata bee sick i got a quick question.....i c people are thinking bout going to mars and such and i was wondering if you could somehow get a supply of oxygen if you brought a bunch of trees with you? and isnt it to hot to go to mars?
363378 2 years ago
you could use trees to recycle the air we breath. Of course what trees do is to convert Carbon dioxide into something we can breath. So your idea would only work on a planet with an atmosphere made greatly from CO2. I don't think that's the case on mars. and why would it be hot on mars? it's further from the sun.
ASKaPHYSICIST 2 years ago
True enough but i heard theres some deadlier storms there and would b hard to avoid since nasa is thinking of actually going...so its possible to recreate oxygen from having plants on a ship? and if you know why the moon doesnt get pulled into the the earth...i kno some whack questions but hit me up if you kno
363378 2 years ago
(sorry for my annoying follow up.. I really gotta read up on this stuff myself, it is so interesting)
sirmolio 2 years ago
I wonder, do we really KNOW that the source of a black hole is a singularity? (a SINGLE POINT IN SPACE WITH NO VOLUME, OF INFINITE DENSITY?)
What if, when matter is sucked into a black hole to the sing, it is COMPACTED SO densely that over time but not inifinitely densely, the VOLUME that it is accreted is so small cuz its so dense that even over billions of yrs its size (volume) grows so slowly that it simply hasnt grown large enough to surpass the event horizon and be observed?
sirmolio 2 years ago
Thanks for all your replies btw, Jan. Hope to see new vids soon, but take your time if you have other priorities :)
sirmolio 2 years ago
2:01 - 2:07
Question:
Will the cannonball keep rising forever? On which vectorial will it travel?
In other words.... once the object escapes the earth's gravity, it is now being pulled by the gravity of distant objects of the universe, right? Is there not, therefore, a CENTER-OF-MASS of the universe which will direct the object upon its escape from the earth's gravity? Think about it....... thanks..
sirmolio 2 years ago
Thinking of the universe as a system.. once it escapes earth's velocity then it would be subject to the grav forces of all other mass in the universe. The CENTER OF MASS OF THE UNIVERSE would be pulling on said object once it escapes earth's gravity. But I guess larger massed objects at closer distances to the escapee object would influence/pull it more. Can the center of mass of the universe be calculated by the "deflection" of an object propelled from earth once it escapes earth's velocity.
sirmolio 2 years ago
depending how you shoot it, the object might end up orbiting the sun still. If you shoot it even further, it might still orbit the centre of our galaxy. Beyond that, the matter in the universe should be so dispersed, it's influence should be negligible. The object could travel 1000s of light years before coming close to any other object, if at all.
ASKaPHYSICIST 2 years ago
Wasn't there another type of black hole found that was only like 200 times the mass of the sun or something?
I could be wrong, but that's just what I thought. =]
LilBromide 2 years ago
You mean an intermediate size black hole. It is my understanding that we're still looking for that.
ASKaPHYSICIST 2 years ago
This has been flagged as spam show
What are the jets that shoot out of black holes? what is shot out? how can it avoid being sucked inside the hole?
Vanboevan 2 years ago
What are the jets that shoot out of black holes? what is shot out? how can it avoid being sucked inside the hole?
Vanboevan 2 years ago
thx for the info dude... talking about holes xD can you explaine whats a worm holes and time travle i know it's far from this topic but i find i think it's interesting and i'm curious to know... thx again :)
rapboyajc 2 years ago
Not in great detail, no. But I'll look into it. thanks for the question.
ASKaPHYSICIST 2 years ago
about black holes ... would you think a black hole could have made what we called the big bang.... i think it is possible because if you fill a balloon it will pop.. so why not a black hole??
cricketol 2 years ago
well, both balck holes and the big bang point are thought to be singularities. That's the only similarity I can see.
also keep in in mind that we have a lot of black holes around, but none of them has started a big bang yet.
ASKaPHYSICIST 2 years ago
maybe some black holes cancel themselves out i dont think that would happen then the mass would just be a sun agean but idk.. ambe a larger sun.. or they can just pop under the heavy load aka the psi and burst. hell there are how many kinds of suns mybe a black home makes a new kind of sun ?
cricketol 2 years ago
ok take 3 dif balloons blow them up to 30 psi one is small one is the long kind and the last is one you can tie to a rubber band and bounce around. small one gets to 10 then pops, the long one gets to 15 and pops the big one with the rubber band can go to the full 30
cricketol 2 years ago
Not to get in depth on the singularity issue, but is the basic concept behind the singularity that the composition of the singularity is not mass but energy... in other words, you have lots of matter being sucked into the singularity (at the center of the black hole), and it gets sucked in but when it contacts the singularity, that matter is converted into energy? & because energy itself requires no volume to exist, that explains how you can incorporate a butt load of matter into a single point?
sirmolio 2 years ago
well, i don't know what exactly happens to the matter as it falls in. The reason the black holes form in the first place is basically that the very aspect of matter that stops things from occupying the same space (i.e. the nature of fermionic particles) is not enough to stop the gravitational collapse of a star. What it does to the particles in the process, i don't know.
of course, your reasoning is sound. Photons are bosons and hence could take up the same space.
ASKaPHYSICIST 2 years ago
@ASKaPHYSICIST Not in our universe, but possibly in some other universe. Perhaps they suck up matter until the energy reaches a certain threshold level where it becomes sufficient to cause the initiation of a new world-line?
trisky1234 2 years ago
there is so much that impresses me.... not the least of which is the accent you obviously have, yet you enunciate and articulate every word in english more lucidly than 99% of americans can speak. by god, keep it up..... and the media videos to back up your points....... very nice......
sirmolio 2 years ago
Please, PLEASE, continue this charitable education of your obviously elevated understanding of these cosmically important phenomenona.. I swear, you are a rare gem among Youtube and a gem in this scholarly unconventionaly medium....... I've immense respect for you..
sirmolio 2 years ago 2
6:53 to 7:05 ...
my God you are so awesome... there is so much more substantive praise i could type here.
my question at the moment is, regarding the "accretion disc" phenomenon at above cited intervals of your video. is that genuine time lapsed photography? or simply an "artist's rendition". doesn't matter what the answer is, i just want the truth. there is so much more i have to say to you.. i am a PhD in molecular bio but it bores me. astrophysics has always fascinated. you explain it so well
sirmolio 2 years ago
well, thank you very much, I really wasn't aware my work deserves that much praise but thanks.
I actually have great respect for all biologist, ever since I talked to microbiologist at my uni. Seems to me, while us physicists get to learn about the fascinating secrets of the universe, you have to learn about all the horrible diseases and microbes and all the disgusting things that come with living beings, the rest of us rather remain ignorant of. You guys really have the harder job.
ASKaPHYSICIST 2 years ago
As for the accretion disks, I'm pretty sure these aren't actual recordings, but artistic impressions based on models. The pictures we take are probably much more pixely.
ASKaPHYSICIST 2 years ago
For where things drained by these Black Holes go? I mean, do they go to anywhere? or are they transformed on another things?
ntn009 2 years ago