When you see sped up video of a galaxy spinning...why do all the stars spin at the same rate regardless of there distance from the center? Shouldn't the outer stars be orbiting the center at a slower rate? Related to that...if all the stars are spinning at the same rate, how far out does that extend? The rotation of space that is.
considering light can be a particle, and that a partice can be a light (wave), what is the radius of a photon, and also, what is the radius of an electron?
furhtermore, if light can have a physical characteristic, then using e=mc^2 to find the equivalent mass, is there a possability that light may have gravitational characteristics as well?
@TheAceMcGirk One is a wave made from a photon(light) the other is a wave of atoms(sound). Completely different. The doppler effect isn't a mechanism to lower or speed up the frequency of sound or light, it is the byproduct of doing so.
I know this is an older video, but, Brady, I do have a question I have asked some of the brightest people I've met and no one can tell me the answer:
If spacetime is one, it seems to me that our sensation of time would have to be somewhat dependent upon the speed for which we are traveling through spacetime. If our earth were to be orbiting faster or slower, would this have an effect on our concept of time? Even though our hour still may "seem" like 60 mins, would it still BE 60 mins?
I understand that unifying the forces would be very useful and most likely elegant end the end... But are physicists really sure that they are suppose to be unified at all??????? I mean just because they thought electro magnetism was two different things at one time an later unified them in the end doesn't mean the rest are...
Why the planets don't go around their stars from any side and it's a linear line.. Like for example, why mercury doesn't have its movement around the sun from up to down, then venus from northeast to southwest and so on.. why is it linear :S
If the four main Forces (Gravity, Electromagnetism, Strong and Weak nuclear force) were to somehow combine again, how would the universe respond and how would it effect matter?
If the earth would be a black hole, the diameter has to be 16mm or less. Does that mean that the electrons are on top of the protons or do they need to merge?
When we look into space, we are seeing back in time, therefore, would we be able to see the reflection of our own galaxy being made off another galaxy? (Or you could substitute the galaxy with a theoretical mirror or something of that sort).
@DaN2tHe4UrK I think the apple would already have bacteria living on it in the first place and that could still lead to rotting... But I'm just speculating.
Question: If you dug a hole from one end of the earth to the other, what would happen if you fell inside? Considering that the heat wouldn't kill you. How would the gravity affect you?
@Jadamog Gravity is from the total mass of the earth. So digging to the center would mean you would be in a "weightless" environment. Because there is no gravitational force pulling you down, or up or any which way. Gravity is observed on the surface of the earth because the observer has essentially all of the mass of the planet under his/her feet so to speak, thus, pulling them down towards the planet.
Thats pretty much what I remember from physics at high school :)
@1984THUNDERDOG1984 Actually I would think if you fell in a hole through the earth, you would fall to the most dense parts,which are close to the center, but you would have so much momentum that you would pass the center of the earth, but then fall back after you lost all your speed, creating a pendulum effect.
@Jadamog i you jumped down the hole you would basically come with your feet up first on the other side of the earth, and if nobody caught you youd be falling down and keep falling like that...
In the movie "2010:Space Odyssey" (the sequel to 2001), we are shown the Monoliths (a von-neumann probes) multiplying rapidly on Jupiter. Within minutes, the planet Jupiter is turned into a companion star to the Sun. One of the astronauts exclaims 'This violates physics! How did they go past the Iron minimum?"
This is my question. Also, could you please clarify the concept of "Binding Energy of Iron" ?
Also, would you call Tesla the greatest modern physicist? Many physicists can't recreate his experiments, such as destroying sections of New York and projecting energy over great distances, despite the advances in technology and knowledge.
its the mirror capturing the light that has travelled to give the telescope the image. so my next question why dont some one build a telescope that would be powerful enough to show deep into the universe in real time....is that possible at all?? btw i didnt search it. the answer popped into my head while watching your videos. ty!! I LOVE PHYSICS and no i dont believe in god, i beleive in black holes, dark matter and everything else!!!
why do we look back in time thro the hubble (deep field). its a very powerful telescope. how far does the telescope go before the image is classed as being in the past..... something that has baffled me for years!! but i dont want to search it, to spoil my thinking. to be told would be awsum!!
Why are all stars not the same size if it takes a certain amount of matter to initiate thermonuclear reactions. Why do supermassive stars form instead of just achieving 1 solar mass, igniting, and blowing away the remains of the gas/dust cloud.
What are the factors that determine star mass/size?
Hmm... here's another intriguing one regarding time dilation. Suppose I'm on a space ship either orbiting the earth at near the speed of light or near a black hole... In both cases time would run much slower for me than on earth. Now, what would happen if I turn a TV and catch a live transmission... Would I see it normally, in slow motion or in fast motion? What would happen if I try to communicate with earth using a radio? How would that conversation look like?
Yet another question: What does it mean that in the earliest moment of the formation of the universe (10 to the -43 seconds!) the four forces (gravity, electromagnetism, the strong and the weak nuclear force) were "united" and then (10 to the -12 seconds!) they were separated?? Another related question that amazes me about physicists: how the hell you can picture such things by reading equations!!??
Question about the particle/wave duality. I sort of can picture light as a wave (a wave of photons?) however how can single electrons behave like waves, as in the double slit experiment. I can picture photons "waving" in a light beam, just as I can picture molecules of water waving in a lake, but what the hell is "waving" while you shot single electrons? I guess I shouldn't try to picture these things, but is there a way to picture them in your mind? Thanks!
How is it possible that the universe is never ending? everything must have its borders. If we reach the end of the universe will we jst reach a bright white light or a wall of some sort?
What is the effect of the rotation move of earth in life? If we find a planet, just like earth, i mean, with the same mass, the same distance from a star, but the only difference is that the planet doesn't have a rotation movement, how the life would be affected?
sry i´m not from a english speaking country - thats why sry for my bad english at some points - (question) we know that there is the theorie that there are particles which are faster then the speed fo light - how ist that possible - where does the engergy come from to give them this potential of beeing so fast ?
Another question (I have dozens, sorry!) Is it known WHY when you try to observe where an electron goes in a double slit experiment they seem to behave like particles? That is (I guess...): is it know how observing something at the quantum level distorts its behavior? BTW I'd LOVE to see a good video of the double slit experiment. There aren't good versions of it on YT!
QUESTION: according to general relativity, gravity "is" the curvature of the space-time fabric that objects make according to their mass, and that's why for instance planets revolve around the sun. My question then is why don't less massive objects eventually fall into the more massive objects? Why, for instance, the orbits of the planets remain constant over billions of years?
Life is a very strange thing. Lets imagine that life is just an object that lies in the "Toolbox Of The Universe"... among other things such as for example laws of physics. The are all lying around in there... Since life is such a dark horse in it self, what more undiscoverd dark horses will/can there be in this toolbox?
If time slows down when you speed up, and time stops when you reach the speed of light, time doesn't move for light. But how come light still takes time to travel from one spot to another? As without time, you can be everywhere at the same time to the observer's eye.
Was the planet Venus once a comet that passed by the earth, causing huge natural disasters such as floods and earthquakes and even tilting the earth on its axis?
What would happen to the earth if a comet almost the size of our own planet where to pass by, through space, about 50, 000 miles away?
Was the planet Venus once a comet that passed by the earth, about 7000 years ago, causing major natural disasters upon the earth? Possibly causing the last ice age?
What would happen to the earth if such a thing where to happen again?
how possible is theory that in the out space exist physical/chemical laws unknown to human which would allow to answer very easy the question where the universe started?
If fundamental particles contain no parts smaller than themselves, what does the matter that makes them consist of? Just a 'blob' of what is essentially energy, or do we go further into LQG and String Theory to explain the aforementioned?
Time slows down as you approach a black hole, so how does anything every fall into a black hole? How does a black hole grow if nothing can fall into it?
@TheKeef27 When the object is near the black hole, time is progressing normally to them. So they get pulled in, "spaghettified" and crushed in no time at all. However, if you where somehow watching this from a distance it would seem like time has slowed down dramatically, almost to a stop. This means it will seem like you have landed on the black hole itself!
@TheKeef27 time slows down but doesnt stop all together. just like time is slower standing on the earth compared to in orbit . the difference in time between the earth and in orbit is only a few billionths of a second, but g.p.s satellites still need to correct this small difference to make sure they dont go out of sync. if you could achieve a high enough speed to orbit the black hole at the centre of our galaxy. if you did it for a year only two years would have passed on earth.
Are there any bacteria or plants that could survive the atmosphere of another planet in our solar system if we left them there (intentionally or inadvertently), and how long would they survive?
Question: We update scientific fact constantly, and at the moment the speed of light is the fastest thing measured, but what if one day we discover that something else travels faster, or that light has different speeds; why do we base so much science on these constants when they have yet to be proven as accurate?
@Darlo770 : The speed of light is not only 671 million MPH but Also 299 000 km/s. Or generally, any kind of distance measure, per any kind of time measure. these are just arbitrary units to calculate a constant.
@Darlo770 maybe our universe is part of a galaxy of universes within an infinate space filled with galaxies of universes and so on and so on forever... likewise in the oposite direction
in any case in which the perception of time could be slowed down fr one individual, and a bullet was shot straight at them, then this bullet would be seen as an incredibly slow speed right? Should this happen, would the bullet still damage even though our perception fully allows us "touching" the bullet and then move away from it
Alright, here is my question, hopefully it will make it through. :)
Is it conceivable that the weak force that gravity is (relative to the other forces), is the reason the big bang occurred? In other words could something have triggered gravity to have become weaker, and that that is the reason why the universe expanded?
This question isn't about physics or astronomy, but I'd like to know what is it that you do on a typical day? I see you answering these questions and then I start wondering what you do when you're not participating in these videos.
@Darlo770 "what is beyond the space in which it hasn't expanded into yet?"
This is a misconception. The universe isn't expanding into anything. If you like, it is creating more space inside itself by moving all its bits apart.
My mental model is to imagine a group of galaxies with a scaled grid overlayed. The position of the galaxies remains fixed but the scaled grid is shrinking all the time. So the galaxies move apart by having more space between them, not by going anywhere.
wot abt a Star called nabila,is it going to pass the earth soon and can distory our planet.is dat ture.and when is the next sighting of is asteroid. thanx 4 taken intrest
wot abt a Star called nabila,is it going to pass the earth soon and can distory our planet.is dat ture.and when is the next sighting of is astroyed. thanx 4 taken intrest
If you was standing up on the top deck of a double decker bus and it was traveling at 40mph and you jumped in the air, why would you not move backwards and land in the same spot? But yet if you stand on the roof of the bus going at the same speed and you jumped the bus would move from under you why is this?
@0iMySize The air inside the bus moves along at about the same speed as the bus. Outside the bus, the air will be approximately stationary (relative to the road). When you jump on the roof, you are moving at approximately the same speed as the bus, so the relative velocity of the outside air will have about the same magnitude as the bus's speed, but in the opposite direction. In other words, the air outside appears to move backwards relative to the motion of the bus, pushing you backwards.
For all those asking about the speed of light, I can heartily recommend Brian Cox and Jeff Forshaw's book "Why does E=mc^2?". It explains it all in very simple to understand terms. (Although it does get a bit more complicated towards the end of the book when discussing "the master equation", but the relativity bit is very straightforward).
What I find hard to understand is why the same laws of physics apply everywhere in the universe. So my question is, how can the laws of physics impose themselves on every part of the universe all the time?
As a secondary question, does the "omnipotence" of scientific law mean that although events in the universe can understood in mechanistic terms, the universe as a whole can't be understood mechanistically?
What is the string theory? I heard there was 5 variations, is that true?
what is the m-theory? is the m-theory absolutely true? Does the universe have a center if it had a big bang, if so where would the center be? If the universe is expanding doesn't that mean that it is creating matter? if so, how is this possible?
Given this is only one Universe,Would the theory of the existence of a Multiverse & Cosmic Cross channel interference explain things such as UFOs,Ghosts & even where does all the Matter and Energy go when swallowed by a black hole,and it is only you and each path you take denote to the Universe you exist in ?
If the explanation for the weakness of gravity is that the graviton is moving through additional dimensions, then why does it still lose intensity at the same rate as electromagnetism?
@Darlo770 The speed of light derrives from the constants for the permittivity and permeability of free space. The reason for the value those constants hold isn't known. We also don't know what's at the edge of the universe or if it even has an edge. The only tool we have to directly observe the universe is light, and the further something is from us, the older the light from it is. The oldest thing we can see is light from moments after the big bang. So we can't see distant areas as they are now
If you're still able to take questions, I have one for the astrophysicists. The edge of the observable universe is a sphere where each point on the sphere is at a distance at which the light reaching us from that point originated from it just after the big bang. If we are seeing the cosmic microwave background in all directions, does that not imply that the event which produced it ocurred at all those points in space at same time? So why do we think the big bang occured at one central point?
Water sits flat because this is the way each particle can have the least potential energy - Flat is the most stable configuration of molecules. Particles will always lose potential energy if they get the chance.
Your falling poo disturb the stability of the water by making a "crater" in the surface. The surface immediately tries to flatten again, but it overshoots, creating a bulge where the crater used to be, and sometimes flinging off droplets that get in your bum.
@JediMasterCheryl Nice thought, but humans (or any other species) cannot live in only 1 or 2 dimensions. Neither we cannot live (exist) in 4 dimension. 3 is just right and 3 should be :). ( I am talking about space dimensions)
why are the orbits of the planets all in more or less the same plane? Also, is the asteroid belt located mainly in this plane as well or is it more a "sphere" of asteroids?
The asteroid belt is in the planetary plane, albeit somewhat loosely. It's basically a planet's worth of rocks that never stuck together and are now floating loose.
The Quipper belt is also in the plane. The Oort cloud, however, is a sphere.
If a cloud of stuff in space weren't moving at all to start with, it would collapse toward a point.
Our solar system formed from a cloud of stuff that was rotating slowly. As the cloud collapsed, the rotation sped up, like when a sink drains. Eventually, the force of gravity matched the centripetal force and the cloud stopped collapsing perpendicular to the rotational axis, but it continued collapsing parallel to it and formed a disk.
where p is the momentum of the particle. If m=0 this gives the energy of a particle of light. If m is not zero there are two square roots to this equation, one with positive energy, the other with negative energy. Feynman interpreted the negative energy solution as the antiparticle, but to make mathematical sense it has to be imagined (in quantum mechanics) as travelling backwards in time. I hope that helps you figure it out.
Light was known to be a wave by Tesla's and Einstein's time. Tesla figured the waves must travel through a medium, (ie. air for sound, aether for light). Light would always move at the same speed relative to the aether. Earth moves in different directions relative to the aether during diferent parts of its orbit, so he thought light would move at different speeds relative to Earth at different times of year.
The experiment has been done. The speed of light didn't change.
@Envergure Alas, you can't. Aether is the primary substance of everything, in motion it is impossible to detect it, unless you build ZPE machines and extract something from it..
Matter exists because of motion, when motion stops matter disappears..We have mass because we are in a constant and tremendous motion..! Do you agree with that ?
Aether is the missing Dark Matter and Prana the missing Dark energy in the Standard Model..!
Aether as a medium for light waves doesn't exist. The word 'aether' can refer to several different things, though.
Nothing moves with respect of its own frame of reference, so how can you say matter depends on motion?
There is no dark matter or energy in the Standard Model. The apparent existence of 'dark' things is still uncertain to science. Some people think there is no such thing, and
When you see sped up video of a galaxy spinning...why do all the stars spin at the same rate regardless of there distance from the center? Shouldn't the outer stars be orbiting the center at a slower rate? Related to that...if all the stars are spinning at the same rate, how far out does that extend? The rotation of space that is.
Vape4life 2 weeks ago
considering light can be a particle, and that a partice can be a light (wave), what is the radius of a photon, and also, what is the radius of an electron?
furhtermore, if light can have a physical characteristic, then using e=mc^2 to find the equivalent mass, is there a possability that light may have gravitational characteristics as well?
farshad94abedi 1 month ago in playlist More videos from sixtysymbols
Is there an infinite number of elements?
lolmomz 2 months ago
@lolmomz No, all the elements have been accounted for.
kiemul136 2 weeks ago
@kiemul136 Well, they have in the last 10 years discovered two elements, so... maybe there's more out there, if not they're infinite.
lolmomz 1 week ago
Can light be lengthend down to sound and/or vice versa via the doppler effect?
TheAceMcGirk 4 months ago
@TheAceMcGirk One is a wave made from a photon(light) the other is a wave of atoms(sound). Completely different. The doppler effect isn't a mechanism to lower or speed up the frequency of sound or light, it is the byproduct of doing so.
urantivirus 2 weeks ago
Why is the weak force called a force? Does it hold something together?
weberbeat 7 months ago
Is the universe the ultimate free lunch? (Mass-energy content = 0)
weberbeat 7 months ago
Would a balloon filled with helium float in a parabolic flight, and would it float in space?
Jmr2urbo 7 months ago
What would happen, if i went through a wormhole and it would close when I was halfway through?
Backo119 7 months ago 2
@Backo119 that happened to me yesterday, i shat myself
assassinbbx 6 months ago
@Backo119 wtf kind of question is this? Wormholes have only been hypothesised and we have no way of doing an experiment like this...
emikochan13 4 months ago
What or who inspired you to become a physicist/astronomer?
Backo119 7 months ago
What causes venus' retrograde rotation?
Maroshirby 7 months ago
I know this is an older video, but, Brady, I do have a question I have asked some of the brightest people I've met and no one can tell me the answer:
If spacetime is one, it seems to me that our sensation of time would have to be somewhat dependent upon the speed for which we are traveling through spacetime. If our earth were to be orbiting faster or slower, would this have an effect on our concept of time? Even though our hour still may "seem" like 60 mins, would it still BE 60 mins?
Thanks
YourBrainOnReligion 8 months ago
What happens to a flame in zero gravity?
HzrdFilms 8 months ago
@HzrdFilms Assuming there was oxygen present, it would be a perfect sphere. There are videos of it.
YourBrainOnReligion 8 months ago
Dunno if Schroedinger ever owned a cat. But he was a renowned womanizer so he got a lot of pussy.
magreggins 9 months ago 17
When the snow melts, where DOES all the white go?
/jk
curlymolly70 9 months ago
I understand that unifying the forces would be very useful and most likely elegant end the end... But are physicists really sure that they are suppose to be unified at all??????? I mean just because they thought electro magnetism was two different things at one time an later unified them in the end doesn't mean the rest are...
KaslarProductions 10 months ago
Fucking magnets, how do they work?
fatachu 11 months ago 3
My doubt is the next one:
Why the planets don't go around their stars from any side and it's a linear line.. Like for example, why mercury doesn't have its movement around the sun from up to down, then venus from northeast to southwest and so on.. why is it linear :S
Eltron25 11 months ago
@Eltron25 It is the path of least resistance.
curlymolly70 9 months ago
I can sometimes make out the titles of books on shelves behind the scientists, but what are their favorites- science and nonscience?
Also Brady, would you do another questions series with PeriodicVideos?
mrericsully 1 year ago
How does superconductivity work? And what are the implications to the world if someone discovers a room temperature superconductor?
AntiProtonBoy 1 year ago
@AntiProtonBoy It would just be a conductor.
curlymolly70 9 months ago
If the four main Forces (Gravity, Electromagnetism, Strong and Weak nuclear force) were to somehow combine again, how would the universe respond and how would it effect matter?
WaveofTwilight 1 year ago
If the earth would be a black hole, the diameter has to be 16mm or less. Does that mean that the electrons are on top of the protons or do they need to merge?
martls6 1 year ago
What are perks of having Phd against having Meng in the industry financially and other stuff??
joshua00719 1 year ago
When we look into space, we are seeing back in time, therefore, would we be able to see the reflection of our own galaxy being made off another galaxy? (Or you could substitute the galaxy with a theoretical mirror or something of that sort).
274017CHBJH4 1 year ago 2
If you leave an apple on the moon would it rot?
DaN2tHe4UrK 1 year ago 3
@DaN2tHe4UrK I think the apple would already have bacteria living on it in the first place and that could still lead to rotting... But I'm just speculating.
KaslarProductions 10 months ago
is there any sort of science which main purpose is to understand what time is?
JollSSteR 1 year ago
Question: If you dug a hole from one end of the earth to the other, what would happen if you fell inside? Considering that the heat wouldn't kill you. How would the gravity affect you?
Jadamog 1 year ago 2
@Jadamog Gravity is from the total mass of the earth. So digging to the center would mean you would be in a "weightless" environment. Because there is no gravitational force pulling you down, or up or any which way. Gravity is observed on the surface of the earth because the observer has essentially all of the mass of the planet under his/her feet so to speak, thus, pulling them down towards the planet.
Thats pretty much what I remember from physics at high school :)
1984THUNDERDOG1984 1 year ago
@1984THUNDERDOG1984 Dont take my word for it though, i failed every single end of year exam :/
1984THUNDERDOG1984 1 year ago
@1984THUNDERDOG1984 Actually I would think if you fell in a hole through the earth, you would fall to the most dense parts,which are close to the center, but you would have so much momentum that you would pass the center of the earth, but then fall back after you lost all your speed, creating a pendulum effect.
Jadamog 1 year ago
@Jadamog Yeah actually, in a practical sense that is probably what the outcome would be
1984THUNDERDOG1984 1 year ago
@Jadamog i you jumped down the hole you would basically come with your feet up first on the other side of the earth, and if nobody caught you youd be falling down and keep falling like that...
Neil Degrease made a video about it,.
u should check it out.
JollSSteR 1 year ago
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Why did the scientists choose to study physics? Among all undergraduation programs they could have chosen why physics?
BrunoHP89IT 1 year ago
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BrunoHP89IT 1 year ago
question on astrophysics:
In the movie "2010:Space Odyssey" (the sequel to 2001), we are shown the Monoliths (a von-neumann probes) multiplying rapidly on Jupiter. Within minutes, the planet Jupiter is turned into a companion star to the Sun. One of the astronauts exclaims 'This violates physics! How did they go past the Iron minimum?"
This is my question. Also, could you please clarify the concept of "Binding Energy of Iron" ?
pitupraveen 1 year ago
Also, would you call Tesla the greatest modern physicist? Many physicists can't recreate his experiments, such as destroying sections of New York and projecting energy over great distances, despite the advances in technology and knowledge.
SuperDan001 1 year ago
Do we truely understand and know what gravity is? We can see the effects of the force, but what actually is it?
SuperDan001 1 year ago
its the mirror capturing the light that has travelled to give the telescope the image. so my next question why dont some one build a telescope that would be powerful enough to show deep into the universe in real time....is that possible at all?? btw i didnt search it. the answer popped into my head while watching your videos. ty!! I LOVE PHYSICS and no i dont believe in god, i beleive in black holes, dark matter and everything else!!!
MrCjGamble 1 year ago
why do we look back in time thro the hubble (deep field). its a very powerful telescope. how far does the telescope go before the image is classed as being in the past..... something that has baffled me for years!! but i dont want to search it, to spoil my thinking. to be told would be awsum!!
MrCjGamble 1 year ago
How many books have the professores read?
ahmednoe 1 year ago
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if god existed wat sex do you believe he or she would be and why ?
and the answer god does not have one does not count
narutokony 1 year ago
Why are all stars not the same size if it takes a certain amount of matter to initiate thermonuclear reactions. Why do supermassive stars form instead of just achieving 1 solar mass, igniting, and blowing away the remains of the gas/dust cloud.
What are the factors that determine star mass/size?
watkinstech 1 year ago
why gravity affects light (massless thing) and space?
swarooppradhan 1 year ago
why do the constants have the value they have ? :)
neo92vip 1 year ago
If you could come up with your own SI unit, what would it be?
FlashFizz 1 year ago
To the Scientists at sixty symbols, What is your individual opinion of time travel?
benirall1246 1 year ago
What would happen if the Earth would get another moon of the same size, at the same distance?
Bangbriecamembert 1 year ago
What would happen if the Earth would get another moon of the same size, at the same distance?
Bangbriecamembert 1 year ago
What significant mystery about the quantum world do you think will be solved by 30 or 50 years time?
sferemonk 1 year ago
Hmm... here's another intriguing one regarding time dilation. Suppose I'm on a space ship either orbiting the earth at near the speed of light or near a black hole... In both cases time would run much slower for me than on earth. Now, what would happen if I turn a TV and catch a live transmission... Would I see it normally, in slow motion or in fast motion? What would happen if I try to communicate with earth using a radio? How would that conversation look like?
cristianfcao 1 year ago
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cristianfcao 1 year ago
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Yet another question: What does it mean that in the earliest moment of the formation of the universe (10 to the -43 seconds!) the four forces (gravity, electromagnetism, the strong and the weak nuclear force) were "united" and then (10 to the -12 seconds!) they were separated?? Another related question that amazes me about physicists: how the hell you can picture such things by reading equations!!??
cristianfcao 1 year ago
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ryanpiuma 1 year ago 2
Why do human beings have consciousness?
Bet they won't answer that one.
turbodub501 1 year ago
What would happen if you dug a tunnel right to the center of the earth and began to live there, like in "The Matrix" with the city Zion?
elimik31 1 year ago
Could Earth support life if our planet was in the same solar system as VY Canis Majoris?
Wolfman12395 1 year ago
Question about the particle/wave duality. I sort of can picture light as a wave (a wave of photons?) however how can single electrons behave like waves, as in the double slit experiment. I can picture photons "waving" in a light beam, just as I can picture molecules of water waving in a lake, but what the hell is "waving" while you shot single electrons? I guess I shouldn't try to picture these things, but is there a way to picture them in your mind? Thanks!
cristianfcao 1 year ago
Brady,
Why do astronomers often say there is no surface to the gas giants when they all have rocky cors larger than the earth?
Thanks
slodeth5 1 year ago
How were the universal forces initiated and what caused the formation of the primary subatomic particles?
Spardeth 1 year ago 16
How is it possible that the universe is never ending? everything must have its borders. If we reach the end of the universe will we jst reach a bright white light or a wall of some sort?
Skippodog 1 year ago
What is the Quantum Mechanical description or explanation of fire? Why does fire have those characteristic shapes?
Cogliostro80 1 year ago 2
What is the effect of the rotation move of earth in life? If we find a planet, just like earth, i mean, with the same mass, the same distance from a star, but the only difference is that the planet doesn't have a rotation movement, how the life would be affected?
Caralbur 1 year ago
@Caralbur
The biggest diference would be no day/night cycle i think.
safian31337 1 year ago
If you could teleport yourself to any point in the universe, where would you go to?
andreicmello 1 year ago
@andreicmello
Awsome question, please ask that ;)
safian31337 1 year ago
This has been flagged as spam show
Yet another question!: Why the objects in the Asteroid belt or in the Kuiper belt never accreted to form planets? Thanks!
cristianfcao 1 year ago
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cristianfcao 1 year ago
Brady,
What effect, if any, does the moon of Pluto have on it?
Thank you.
slodeth5 1 year ago
sry i´m not from a english speaking country - thats why sry for my bad english at some points - (question) we know that there is the theorie that there are particles which are faster then the speed fo light - how ist that possible - where does the engergy come from to give them this potential of beeing so fast ?
thanks
SparkElite 1 year ago
Another question (I have dozens, sorry!) Is it known WHY when you try to observe where an electron goes in a double slit experiment they seem to behave like particles? That is (I guess...): is it know how observing something at the quantum level distorts its behavior? BTW I'd LOVE to see a good video of the double slit experiment. There aren't good versions of it on YT!
Thanks!
cristianfcao 1 year ago
QUESTION: according to general relativity, gravity "is" the curvature of the space-time fabric that objects make according to their mass, and that's why for instance planets revolve around the sun. My question then is why don't less massive objects eventually fall into the more massive objects? Why, for instance, the orbits of the planets remain constant over billions of years?
cristianfcao 1 year ago
Brady,
What would have to happen for the asteroids between Mars and Jupitor to form into a planet and could it happen quickly?
Thank you.
slodeth5 1 year ago
were do the electrons in magnets get their energy from
Nyikahairovi1 1 year ago
A question for you:
Life is a very strange thing. Lets imagine that life is just an object that lies in the "Toolbox Of The Universe"... among other things such as for example laws of physics. The are all lying around in there... Since life is such a dark horse in it self, what more undiscoverd dark horses will/can there be in this toolbox?
andflygh 1 year ago
If time slows down when you speed up, and time stops when you reach the speed of light, time doesn't move for light. But how come light still takes time to travel from one spot to another? As without time, you can be everywhere at the same time to the observer's eye.
Sanquinity 1 year ago
what would happen to the universe if all the stars and all the sources of heat and light simply disapear?
pgomespwr95 1 year ago
Given that high tides are caused by the moon, why are there two a day?
jdgrahamo 1 year ago
What about Velikovsky's ' Worlds in Collision '?
Was the planet Venus once a comet that passed by the earth, causing huge natural disasters such as floods and earthquakes and even tilting the earth on its axis?
What would happen to the earth if a comet almost the size of our own planet where to pass by, through space, about 50, 000 miles away?
GARYWERSLEY 1 year ago
What about Velikovsky's "Worlds in Collision"?
Was the planet Venus once a comet that passed by the earth, about 7000 years ago, causing major natural disasters upon the earth? Possibly causing the last ice age?
What would happen to the earth if such a thing where to happen again?
GARYWERSLEY 1 year ago
how possible is theory that in the out space exist physical/chemical laws unknown to human which would allow to answer very easy the question where the universe started?
xrsilverxr 1 year ago
This has been flagged as spam show
Distant red shift is caused by antimatter
JonThm 1 year ago
Why do my socks always bunch up in my shoes.... this annoys me and should be answered!
jakadict 1 year ago
If fundamental particles contain no parts smaller than themselves, what does the matter that makes them consist of? Just a 'blob' of what is essentially energy, or do we go further into LQG and String Theory to explain the aforementioned?
boxedguilt 1 year ago
Does the universe have walls, if it you think it does what is outside of the walls? If you don't how does it go on for ever?
FAB12UCB 1 year ago
Are there any theories stating that the universe is absolutely static and the sense of time is just an illusion?
mirekrusin 1 year ago
How the matter can be aware of itself? Is it just arrangement of it? Is this phenomenon related to specific electromagnetic fields or the frequency?
mirekrusin 1 year ago
un cambio de las constantes implicaria otro universo? el universo son las fuerzas o las constantes?
franciscoac84 1 year ago
I have heard there are like 27 Dimensions (or was it 23?).... Where the hell are they?!
erzangel135 1 year ago
Time slows down as you approach a black hole, so how does anything every fall into a black hole? How does a black hole grow if nothing can fall into it?
TheKeef27 1 year ago
@TheKeef27 When the object is near the black hole, time is progressing normally to them. So they get pulled in, "spaghettified" and crushed in no time at all. However, if you where somehow watching this from a distance it would seem like time has slowed down dramatically, almost to a stop. This means it will seem like you have landed on the black hole itself!
kiemul136 1 year ago
@TheKeef27 time slows down but doesnt stop all together. just like time is slower standing on the earth compared to in orbit . the difference in time between the earth and in orbit is only a few billionths of a second, but g.p.s satellites still need to correct this small difference to make sure they dont go out of sync. if you could achieve a high enough speed to orbit the black hole at the centre of our galaxy. if you did it for a year only two years would have passed on earth.
(s.hawking)
Tibbert67 1 year ago
If it takes a week to walk a fortnight, how long does it take a one legged dwarf to hop through a barrel of treacle?
MindCrazedBanjo 1 year ago
Can there be multiple time dimensions?
fractal420 1 year ago
@fractal420 Time is the fourth dimention through-which we traverse the time-space continum ......I think.
temporaldisplacement 1 year ago
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anonysquirrel 1 year ago
whats the meaning of life?
19pedro95 1 year ago
@Darlo770 the speed of light is not constant it varies from the outer atmosphere to the inner core of the earth.
cronauer1985 1 year ago
If the universe is forever expanding, what is it expanding into and what is contracting.
bizzyfingers 1 year ago 13
@bizzyfingers doesnt work like that
space itself is expanding , its hard to explain ...and its not expanding into something
sidewaysfcs0718 8 months ago
Are there any bacteria or plants that could survive the atmosphere of another planet in our solar system if we left them there (intentionally or inadvertently), and how long would they survive?
PROMuffy 1 year ago
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PROMuffy 1 year ago
what are you some super nerds how do you think of this stuff good imaginations lol
marshalparshal 1 year ago
Question: We update scientific fact constantly, and at the moment the speed of light is the fastest thing measured, but what if one day we discover that something else travels faster, or that light has different speeds; why do we base so much science on these constants when they have yet to be proven as accurate?
SpacedTime 1 year ago
@Darlo770 : The speed of light is not only 671 million MPH but Also 299 000 km/s. Or generally, any kind of distance measure, per any kind of time measure. these are just arbitrary units to calculate a constant.
Badidon 1 year ago
Why do planets orbit the sun?
mariofckart 1 year ago
@mariofckart Becuz if they didn't, it would be very cold:P Haha
Ouija88 1 year ago
@Darlo770 maybe our universe is part of a galaxy of universes within an infinate space filled with galaxies of universes and so on and so on forever... likewise in the oposite direction
apoplexy1974 1 year ago
Here's my question: If nothing is impossible, then is it possible for some things to be impossible?
I think my question proves that some things are impossible.
Time4TruthDOTorg 1 year ago
@Time4TruthDOTorg What you're question proves is that you do not know what impossible means.
Chewyfied 1 year ago
@Chewyfied All your answer proves is that you do not understand my question.
Time4TruthDOTorg 1 year ago
@Time4TruthDOTorg Erm no. Foolio. You're question is a piss poor attempt at being clever, that is obvious.
Chewyfied 1 year ago
@Chewyfied As is your answer. If you have nothing useful to contribute, be quiet kid.
Time4TruthDOTorg 1 year ago
Here's an idea GENIUSES, let's look at a SOLAR ECLIPSE without ANY eye protection! WTF is going on here?
supasonicman 1 year ago
Could human life exist on earth without Jupiter?
lemonelephantdot 1 year ago
We're talking about the universe being created in an explosion, and about early ripple effects. So the universe should have a center, right?
RemyBertrand 1 year ago
please explain the graviton and sub atomic particles
neverint 1 year ago
in any case in which the perception of time could be slowed down fr one individual, and a bullet was shot straight at them, then this bullet would be seen as an incredibly slow speed right? Should this happen, would the bullet still damage even though our perception fully allows us "touching" the bullet and then move away from it
neverint 1 year ago
The answer to "Did Schrodinger actually ever own a cat?" is...well, he did and he didn't...
pgm3 1 year ago
What is infinity?
lou220uk 1 year ago
Alright, here is my question, hopefully it will make it through. :)
Is it conceivable that the weak force that gravity is (relative to the other forces), is the reason the big bang occurred? In other words could something have triggered gravity to have become weaker, and that that is the reason why the universe expanded?
fireeyedb0y 1 year ago
This question isn't about physics or astronomy, but I'd like to know what is it that you do on a typical day? I see you answering these questions and then I start wondering what you do when you're not participating in these videos.
KaiserTota 1 year ago
One professor said that discovering something was the 2nd most enjoyable thing he knows. Whats the only the more enjoyable than that?
DoctorHutton 1 year ago
@Darlo770 "what is beyond the space in which it hasn't expanded into yet?"
This is a misconception. The universe isn't expanding into anything. If you like, it is creating more space inside itself by moving all its bits apart.
My mental model is to imagine a group of galaxies with a scaled grid overlayed. The position of the galaxies remains fixed but the scaled grid is shrinking all the time. So the galaxies move apart by having more space between them, not by going anywhere.
chrisofnottingham 1 year ago
@Darlo770
Because that's just how much light can travel in 1 hour, 671 million miles. There is no reason why.
Edge0fPain 1 year ago
This has been flagged as spam show
wot abt a Star called nabila,is it going to pass the earth soon and can distory our planet.is dat ture.and when is the next sighting of is asteroid. thanx 4 taken intrest
shazhussain24 1 year ago
wot abt a Star called nabila,is it going to pass the earth soon and can distory our planet.is dat ture.and when is the next sighting of is astroyed. thanx 4 taken intrest
shazhussain24 1 year ago
@Darlo770 Nothingness
bumfree 1 year ago
@SuperBlue121 Jesus
bumfree 1 year ago
@Darlo770 There is no edge of the Universe, its constantly expanding ;O
bumfree 1 year ago
Question to the room:
What are your favourite animals?
biscuitfinger 1 year ago
@biscuitfinger Gypsies
bumfree 1 year ago
i have a question;
If you was standing up on the top deck of a double decker bus and it was traveling at 40mph and you jumped in the air, why would you not move backwards and land in the same spot? But yet if you stand on the roof of the bus going at the same speed and you jumped the bus would move from under you why is this?
0iMySize 1 year ago
@0iMySize The air inside the bus moves along at about the same speed as the bus. Outside the bus, the air will be approximately stationary (relative to the road). When you jump on the roof, you are moving at approximately the same speed as the bus, so the relative velocity of the outside air will have about the same magnitude as the bus's speed, but in the opposite direction. In other words, the air outside appears to move backwards relative to the motion of the bus, pushing you backwards.
weetabixharry 1 year ago
@weetabixharry ohhhh okay thank you for clearing that up for me :)
0iMySize 1 year ago
For all those asking about the speed of light, I can heartily recommend Brian Cox and Jeff Forshaw's book "Why does E=mc^2?". It explains it all in very simple to understand terms. (Although it does get a bit more complicated towards the end of the book when discussing "the master equation", but the relativity bit is very straightforward).
bujin1977 1 year ago
Has the moon ever split?
Is it possible for a single day to last as long as a whole year? or a month? or a week?
jihadulnafs 1 year ago
What I find hard to understand is why the same laws of physics apply everywhere in the universe. So my question is, how can the laws of physics impose themselves on every part of the universe all the time?
As a secondary question, does the "omnipotence" of scientific law mean that although events in the universe can understood in mechanistic terms, the universe as a whole can't be understood mechanistically?
penchanskii 1 year ago
@Darlo770 The speed of light (or photons) is always constant because wavelength and frequency are inversely proportional to each other.
Evertonian94 1 year ago
What travels faster than the speed of light? (Which is 300,000 km/s.)
The furthest galaxies in the Universe that are receeding away from us.
Evertonian94 1 year ago
How many coconuts can you fit into a blender without breaking it?
Is it true that marmite is realy a love or hate thing?
Do animals actually understand eachother?
Am I being pointless? lmao
GordenBrown3D 1 year ago
@GordenBrown3D
these would be more appropriate to ask:
the blender guy,
Paddington bear, mr blobby,
oh and steven hawking for the first one
TeslaCoilArbiter 1 year ago
@TeslaCoilArbiter
Well, first off...
'Padington Bear' and 'Mr. Blobby' are fictional characters, sorry to brake your heart mate
Secondly, Steven hawkins is a bit out of my reach. I'd rather ask somebody who isnt out of my reach.
GordenBrown3D 1 year ago
Do parallel universes exist?
What is the string theory? I heard there was 5 variations, is that true?
what is the m-theory? is the m-theory absolutely true? Does the universe have a center if it had a big bang, if so where would the center be? If the universe is expanding doesn't that mean that it is creating matter? if so, how is this possible?
Thank you in advance.
OmegaWasHere 1 year ago 16
What's outside the Universe?
MagikGimp 1 year ago
Given this is only one Universe,Would the theory of the existence of a Multiverse & Cosmic Cross channel interference explain things such as UFOs,Ghosts & even where does all the Matter and Energy go when swallowed by a black hole,and it is only you and each path you take denote to the Universe you exist in ?
576ito1080p 1 year ago
If the explanation for the weakness of gravity is that the graviton is moving through additional dimensions, then why does it still lose intensity at the same rate as electromagnetism?
popipiopit 1 year ago
@Darlo770 The speed of light derrives from the constants for the permittivity and permeability of free space. The reason for the value those constants hold isn't known. We also don't know what's at the edge of the universe or if it even has an edge. The only tool we have to directly observe the universe is light, and the further something is from us, the older the light from it is. The oldest thing we can see is light from moments after the big bang. So we can't see distant areas as they are now
Nyphur 1 year ago
If you're still able to take questions, I have one for the astrophysicists. The edge of the observable universe is a sphere where each point on the sphere is at a distance at which the light reaching us from that point originated from it just after the big bang. If we are seeing the cosmic microwave background in all directions, does that not imply that the event which produced it ocurred at all those points in space at same time? So why do we think the big bang occured at one central point?
Nyphur 1 year ago
Question - Why do you need "Many" Worlds in the Many Worlds theory, why can't you just have two?
Mike51020 1 year ago
@SophiaWatsonTG
Water sits flat because this is the way each particle can have the least potential energy - Flat is the most stable configuration of molecules. Particles will always lose potential energy if they get the chance.
Your falling poo disturb the stability of the water by making a "crater" in the surface. The surface immediately tries to flatten again, but it overshoots, creating a bulge where the crater used to be, and sometimes flinging off droplets that get in your bum.
Envergure 1 year ago
@JediMasterCheryl Nice thought, but humans (or any other species) cannot live in only 1 or 2 dimensions. Neither we cannot live (exist) in 4 dimension. 3 is just right and 3 should be :). ( I am talking about space dimensions)
Blaugranist 1 year ago
what would happen if you tempered a piece of iron in liquid oxygen
AnimaEpisodes 1 year ago
why are the orbits of the planets all in more or less the same plane? Also, is the asteroid belt located mainly in this plane as well or is it more a "sphere" of asteroids?
P34chFuzz 1 year ago
@P34chFuzz
The asteroid belt is in the planetary plane, albeit somewhat loosely. It's basically a planet's worth of rocks that never stuck together and are now floating loose.
The Quipper belt is also in the plane. The Oort cloud, however, is a sphere.
Envergure 1 year ago
@P34chFuzz
If a cloud of stuff in space weren't moving at all to start with, it would collapse toward a point.
Our solar system formed from a cloud of stuff that was rotating slowly. As the cloud collapsed, the rotation sped up, like when a sink drains. Eventually, the force of gravity matched the centripetal force and the cloud stopped collapsing perpendicular to the rotational axis, but it continued collapsing parallel to it and formed a disk.
Envergure 1 year ago
The equation E=mc2 was corrected to E= +/-mc2. WHY??? I thought I had it figured out!
Ceevro 1 year ago
@Ceevro The equation Einstein derived is
E^2=c^2p^2+m^2c^4
where p is the momentum of the particle. If m=0 this gives the energy of a particle of light. If m is not zero there are two square roots to this equation, one with positive energy, the other with negative energy. Feynman interpreted the negative energy solution as the antiparticle, but to make mathematical sense it has to be imagined (in quantum mechanics) as travelling backwards in time. I hope that helps you figure it out.
MrOldprof 1 year ago
jesper4450, the answer is you will not see the car as it would pass before you got into yours.
tucays1 1 year ago
The greatest scientist ever, Nikola Tesla, suggested the existence of aether.. Einstein denied it later in his life.. Who is right ?
lnpkural 1 year ago
@lnpkural
Light was known to be a wave by Tesla's and Einstein's time. Tesla figured the waves must travel through a medium, (ie. air for sound, aether for light). Light would always move at the same speed relative to the aether. Earth moves in different directions relative to the aether during diferent parts of its orbit, so he thought light would move at different speeds relative to Earth at different times of year.
The experiment has been done. The speed of light didn't change.
Envergure 1 year ago
@Envergure Alas, you can't. Aether is the primary substance of everything, in motion it is impossible to detect it, unless you build ZPE machines and extract something from it..
Matter exists because of motion, when motion stops matter disappears..We have mass because we are in a constant and tremendous motion..! Do you agree with that ?
Aether is the missing Dark Matter and Prana the missing Dark energy in the Standard Model..!
lnpkural 1 year ago
@lnpkural
Aether as a medium for light waves doesn't exist. The word 'aether' can refer to several different things, though.
Nothing moves with respect of its own frame of reference, so how can you say matter depends on motion?
There is no dark matter or energy in the Standard Model. The apparent existence of 'dark' things is still uncertain to science. Some people think there is no such thing, and