Great video. See my post on Nature's forum on CERN Breaks Speed of light, 27342 and 27540, 3rd from the last. Google my name with neutrino. I guess Nature liked it. Sit down reading it. E=m+{a}c2 This corrects error in Newton's Law as well...F=m+{a}a, and Ohms law, etc. {a} separates weak force from strong force in UFT but is part of T so equation is in balance. Sound techs have been aware of this for years. It changes physics a little bit at a time;-)
Leo Susskind, Martin Rees, and others, gave it a value of 1:10 to the 120th power. The "most extreme example of fine-tuning." Both men, faced with this, felt that a Multiverse was the only known alternative. [' What we still dont know' youtube] Whether this value still stands, i dont know.
The two scientific giants of the 20th century, "relativity" & "quantum".
Relativity is implicit of "special creation" & quantum killed "materialism"
Gee, it certainly appears as though atheism & science don't mix very well. Its no wonder that the renaissance & the birth of modern science arrived on the heels of the Protestant Reformation
The two scientific giants of the 20th century, "relativity" & "quantum".
Relativity is implicit of "special creation" & quantum killed "materialism"
Gee, it certainly appears as though atheism & science don't mix very well. Its no wonder that the renaissance & the birth of modern science arrived on the heels of the Protestant Reformation
What if a galaxy is going one direction at light speed and another is going the opposite direction at light speed. Relative to each other what would the red shift measure??
MY QUESTION IS WHY ALL THE IMAGES FROM SPACE HAVE TO BE PASSED THRO THE VATICAN........WTF IS GOING ON???? THATS A QUESTION YOU WILL NEVER BE ABLE TO ANSWER WITHOUT HARD EVIDENCE!!!
The guy in the glasses actually says "Science is all about aesthetics" as an argument against a small Lambda? Sorry dude, but science is about the data, not your personal sense of what is beautiful or pleasing.
Science is not merely about looking at data, but figuring out useful ways of interpreting that data that are harmonious with the real world. The question is one of getting a theory that elegantly explains all that it has to explain. He's saying that if you go by quantum theory, your lambda has to be so ridiculously huge that the universe would tear itself apart. But if you look at what has been observed, it's very small. So the challenge is getting a theory that can explain both.
He's saying that if you go by quantum theory, your lambda has to be so ridiculously huge that the universe would tear itself apart. But if you look at what has been observed, it's very small. So the challenge is getting a theory that can explain both.
He's saying that if you go by quantum theory, your lambda has to be so ridiculously huge that the universe would tear itself apart. But if you look at what has been observed, it's very small. So the challenge is getting a theory that can explain both.
@anonysquirrel The Big Bang was not an explosion, that is a common fallacy. It was an expansion of space time, there is no momentum. The expansion is accelerating over time, not slowing. You'd expect it to slow to zero eventually if it were the result of an explosion. Lambda is a property of empty space, which is not "empty" but filled with quantum fluctuations of virtual particles.
So... if the expansion is accelerating then it couldn't have started from a 'big bang' unless im totally missing the understanding of the big bang theory? Im confused anyhow.
the way I see it, einstein's general relativity definitely needs change; this is because it is incompatible with quantum field theory, not just when it comes to the cosmological constant... I am talking about the whole quantum gravity business; the theory of everything; the world is clearly subject not to relativity or QFT but to a law which is in relation to both like special relativty is to newton's laws;
Did Einstein ever actually explain why he thought it was a mistake? He's never seemed the kind of person who would remove it without good reason. I'm assuming the guy who invented relativity didn't remove it for philosophical reasons.
@Philosification, I believe he considered it a mistake because if he hadn't introduced the constant his theory would have predicted that the universe must be constantly expanding. So that later, when Hubble showed that the universe was expanding, it would be another confirmation of relativity. By introducing the cosmological constant his theory becomes consistent with either an expanding, static, or contracting universe--making the theory appear more contrived than it actually is.
@imalwayswatchingu00, It seems incongruous to be both scared of 11th grade physics and simultaneously enthusiastic about the quality of your school system. Did you mean in general? (Except for the fact that it makes physics look frightening?) You might enjoy Conrad Wolfram's TED talk about teaching mathematics. I suspect from the enormous popularity of the KhanAcademy on youtube, and talk's like Conrad's, that we're in the middle of a quiet revolution in the methodology of education.
@NathBonn, like the pythagorean theorem? Or the theory of evolution by natural selection? They're both facts. There is every reason to treat them as such.
@jgordon707, I liken it to our banking system. If you analyze it one way, it doesn't make any sense--how can people pay interest on loans ff there is only a fixed amount of money in the world? Some people consider that proof that our money is genuinely meaningless and that we're ultimately due for a comeuppance because of that. Others feel that perspective itself is misguided and the premise is false. Money must be based on debt or it could not be used to make demands at all.
@ananiasacts I hope this doesn't come off as rude, but that did little to help me understand the constant better. I missed the analogy part of it, if there was one. if you wanna talk about our money system thats cool I just dont see the connection.
@jgordon707, you don't come off as rude at all. I liken the cosmological constant to the interest rate on savings because they both only make sense as positive inflation rates and have many interesting shared corollaries. Both are measures of something somewhat intangible (the expansion of wealth is similar to the expansion of space--everywhere and uniform locally but not necessarily globally, etc.) And as I was trying to point out, both seem to have mysterious somewhat paradoxical properties.
@OldSchoolSkill, in Conrad Wolfram: Teaching kids real math with computers ( watch?v=60OVlfAUPJg ) he explains my perspective on math very well. I not advocating teaching them less, or how things are done--quite the reverse. I'm advocating (and trying to design myself) a meaningful role for them in local civics where children maintain the ontology used by their local government to represent its data in a sort of game. Effectively creating a map of their local economy which earns them income.
@OldSchoolSkill, I think our culture itself has rendered primary schools (both in form and content) virtually obsolete. It's simply not information that children can actually put to use--it grows ever more sterile and abstract. Even things like arithmetic are simply not skills we typically use much. I think we need a paradigm that creates a meaningful, productive, and financially rewarding role for children in society from the youngest ages possible. Demand driven education would be faster.
5:05 I wish he'd say 'cubic centimeter, or sugar cube's worth of space' rather than "centimeter cubed" which probably doesn't mean much to most people. Gosh I love these videos the most of anything on youtube. I wish you'd do lots more of them. One every hour would be about right.
@OldSchoolSkill I'm sorry I meant to add a emoticon to the end of that comment to show that it was meant to be humerus. I was merely reflecting what I took to be the meaning of your comment back on you. "So a bunch of academics and lecturers failed to explain a hugely complicated and counter intuitive idea in a way everyone could understand in a 7 min video. That must mean they have an alterior motive!!!111 :-p" Or they could just be trying to do there best?
@OldSchoolSkill Nahhh! Let it blow over! In the mean time, on web, check out 'skeptoid' by Brian Dunning - imo best science/critical thinking podcast on web! (if u havent already) And great forums with lively debates. Prob the best thing anyone could have done for me as a kid would have been teaching me how to think critically and scientifically. and u can make all the suggestions there u want! Go there and do yr kids a favour!!! :)
@OldSchoolSkill "Who pays for this series? What is their motive?" - A comment such as this is stock standard for a conspiracy theory/paranoid website/forum.
In this light, I hope you can understand now how many might perceive this, even though u didnt mean it like that.
Educating the web is a noble thought -i wish you luck!
As you have discovered, Brady's channels have a fairly hardcore loyalist following, and most are just grateful for this rare, free, quality science on youtube.
@OldSchoolSkill I find your post about Americans being unable to understand these videos ironic: after all, you're American. So please, go away and never come back.
To project this further...the rate of expansion is a curve. That is, the distance from the "big bang" makes a slower rate of expansion as you move out from the point of the big bang. Then will the rate of expansion slow until it stops, and possibly reverses? Or is this a given, and I missed the point?
@OldSchoolSkill I'm an American and I understood this perfectly. Making broad generalizations like "most Americans would not understand this" only makes you sound ignorant and pretentious. Nobody wants help from someone so condescending. Although I agree that science should be made more accessible, I doubt many people come to this channel expecting accessibility; considering its dedicated to discussing some of the more complex theories in physics. Take your arguments to an introductory channel.
@OldSchoolSkill defjam99b said that, probably because the of the final sentence of your first comment, where the implication seemed to be that the makers of these videos were in the pay of "big (pharma/tobacco/young earth creationists/NWO/reptoids/illuminati/ insert yr favourite or most scary here)". It just seemed a very conspiracy sort of thing to say, imo anyway. How did you mean it to come across, btw? :)
Steven Weinberg gave a good comparison of cosmological constant which is the value of dark energy/cosmological constant is almost equal to the energy in a few gallons of gasoline in the volume of a sphere of the size of the earth.
p.s I'm not trying to be cocky, just sharing an example that might help you get some idea of the value of the cosmological constant.
Disagree. Take the science out of science, so people that don't know much science can "understand" science. What good does that do anyone? You are deliberately short-changing people.
Anything worth doing requires some effort. that includes a YouTube science clip. Not everything needs to be always aimed at the lowest common denominator, this channel seeks to aim a little higher than that.
The rest of your angry ranting is paranoid and delusional, and best ignored.
Doesn't the quantum theory and the theory of relativity come together at the edge of a black hole? While the negative ions are absorbed into the black hole, the positive collect at the edge and are visible as light energy. Is that right? I think I read that somewhere. Not sure.
So many people talking about upper/lower case lambda... I wonder how many people know it's (lower case) also the international symbol for homosexuality?
Anyone who knows Jeff Fosworthy is probably fmailiar with his comment about how people typically want to deduct about 100 IQ points whenever they hear some one speak with a southern American accent. I think it's the opposite with an "English" accent.
What if the constant is like other forces in that it drops off exponentially? On the quantum scale it could be huge as the mechanics suggest, but on the cosmic scale it is small. That makes sense because when our universe is small it expanded the fastest then.
@OldSchoolSkill "Most Americans" wouldn't understand this video? As opposed to whom? Most British people? Most German people? What are you even talking about? America is not actually as dumb as everyone seems to think. I found this video very clear and informative, and it (and other videos on this channel) are fantastic resources for the lay public with an interest in science. Who without an interest in science would watch these videos, anyway?
"Einstein's original model had the universe expanding"
Sorry but that is utterly false. According to Einstein's original model the universe should COLLAPSE (not expand) because gravity should induce it to collapse under its own weight, that is, mutual attractions would cause all galaxies or large assemblies to be pulled toward one another, since they had insufficient velocity to resist the attraction.
That is why Einstein came up with the cosmological constant, a hypothetical force to act as a repulsive constant in order to prevent the collapsing. The expanding models are not predicted by general relativity at all, they were proposed as ad hoc solutions by Alexander Friedmann. Look it up
@OldSchoolSkill is there any particular reason why you say americans wouldn't understand it? if you look at those statistical graphs on previous nottingham videos, you'll see the US is about the 2nd highest in most views, so clearly americans understand. if you're basing your idea on educational stats, keep in mind that the US includes EVERYBODY, including the mentally incapable. other countries deliberately only keep track of people who actually graduated or are currently going to school.
Why the crap didn't you mention HUBBLE. That's why cosmologist use big H as the cosmological constant. And to be quite frank, I could care less about how ofter quantum field theory fails. It fails all the time so stop mentioning it and start mentioning the things we have actually measured and the people who measured them. People probably want to know why they named a giant telescope after a particular person.
@OldSchoolSkill There is other shows and books that try explain everything from the ground, like latest Stephen Hawking book, I actually did not liked latest book exactly because it spend way to much time explaining basics - I'd rather watch something for more educated people.
Yeah there are a lot of people without normal scientific education, but that's not our problem is it?
I wish i had the brain to comprehend physics, it is so interesting but with my grasp of mathetics impossible to understand the theory behind it :) il be ignornant in my ability to understand
@OldSchoolSkill To pick up on only one of your ridiculous points, how is this inaccessible to the "lay person" (not that it necessarily should be.) Everything is explained in completely clear English, it uses images, examples and so on to explain every term. Maybe an infant couldn't sit down and follow that but anyone with the mental capacity of at least a 15 year old could come away from this having learned something.
@OldSchoolSkill The nature of your comment makes me wonder what your motives are. Who are you working for? Some rival University, the government, aliens? You certainly cant be an ordinary person just trying to do your best, that's a ludicrous idea!
nice to watch a new sixty symbols video but unfortinately I didn't understand what they were talking about very well so it wasn't very educational for me, but there are probably alot of people for who it was good to watch
I realize this is a philosophical question, and not a novel one at that, but allow me the curiosity to wonder if anyone might shed some light on this. If the cosmological constant is, as its name suggests, not contingent upon anything else, then could it be argued all contingencies arise from this non-contingent property?
@BoStevoD The reality of the situation is this: philosophy is dependent on logic, which is merely what we observe to be true about the universe. An example of this is that something can't be two places at the same time. When it comes down to the exotic reaches of the universe, the very large and the very small, this logic no longer describes reality. Anything is possible, what we prove to be real is real, no matter how illogical it is. To answer your question: yes, it is possible.
@Drag0nfoxx He described the CC in terms of mass per unit volume yet the constant deals with energy. Through E=mc^2, you can calculate the amount of energy contained within the void. c^2 is about 9E16, much too small of a number to allow 1E-29 grams to produce much energy. There is so much dark matter in the universe it is mindblowing, what he is talking about here is dark energy.
@chrislongden4 The cosmological constant is denoted by the capital lambda (Λ), while the decay constant is denoted by the lowercase lambda (λ), which is used in the Half-life games.
@Defonthana Yeah I know. I'm only in my first year but I've met most of the people who appear in these videos at some point. I was introduced to Sixty Symbols by Prof. Copeland who interviewed me when I applied to Nottingham Uni.
@chrislongden4 I think thats the lower case lambda (also used to represent wavelength in optics), this video is talking about uppercase lambda. Right?
@mignik01 Already been asked this several times today. Yeah. The Half Life games use the lower case lambda, which is why its far more likely to come from the radioactive meaning than anything to do with this video, which is the main reason I pointed it out to the random guy who mentioned the games.
@gulllars I know. I am a physics student. I'm deleting all my comments on this video because I am getting frustrated with the amount of people replying with the same comment about other uses of Lambda which have nothing to do with this.
@chrislongden4 lol-i imagine you now really regret asking that.Just read thru all the comments,after having to pause the vid,cause the flaming looked so interesting,and saw about a third of comments were all to you, and all telling you the same/similiar thing! I dont know what that phenomenon is all about - comment after comment after comment giving the same answers! What - can ppl not read anymore?! Just desperate to display that one nugget of knowledge? PS-the lamda symbol is used for... ;)
great video thanks
SuperDogbrown 3 weeks ago
some great inforamtion here thanks
shellybirdy 3 weeks ago
love the video really good
TheKcsmithy 1 month ago
very interesting video thanks
grisgrisy 1 month ago
Great video. See my post on Nature's forum on CERN Breaks Speed of light, 27342 and 27540, 3rd from the last. Google my name with neutrino. I guess Nature liked it. Sit down reading it. E=m+{a}c2 This corrects error in Newton's Law as well...F=m+{a}a, and Ohms law, etc. {a} separates weak force from strong force in UFT but is part of T so equation is in balance. Sound techs have been aware of this for years. It changes physics a little bit at a time;-)
John F. Hendry^^
JohnFHendry 4 months ago
Best YouTube channel!
perrin275 7 months ago
Leo Susskind, Martin Rees, and others, gave it a value of 1:10 to the 120th power. The "most extreme example of fine-tuning." Both men, faced with this, felt that a Multiverse was the only known alternative. [' What we still dont know' youtube] Whether this value still stands, i dont know.
brianjsmith1895 7 months ago
What would it mean if it was something like 1.0009 ?
uut0 7 months ago
This has been flagged as spam show
JESUS CHRIST IS LORD ! The light shines in the darkness, and the darkness has not overcome it. GET SAVED NOW !
ePRTN 10 months ago
I think these videos are excellent! If these are all professors at the uni of Nottingham, it makes me want to go back to school. ;)
twstdelf 10 months ago
The two scientific giants of the 20th century, "relativity" & "quantum".
Relativity is implicit of "special creation" & quantum killed "materialism"
Gee, it certainly appears as though atheism & science don't mix very well. Its no wonder that the renaissance & the birth of modern science arrived on the heels of the Protestant Reformation
Chuichupachichi 11 months ago
The two scientific giants of the 20th century, "relativity" & "quantum".
Relativity is implicit of "special creation" & quantum killed "materialism"
Gee, it certainly appears as though atheism & science don't mix very well. Its no wonder that the renaissance & the birth of modern science arrived on the heels of the Protestant Reformation
Chuichupachichi 11 months ago
Great choice for a Symbol again, Brady, well done. But was it me or was the camera work a lot more shaky?
Keep up the good work - one of the few sites I check constantly for updates!
SDinjens 1 year ago
Fascinating!
johnclavis 1 year ago
This has been flagged as spam show
we really need subtitles! Like Ted.com conferences... PLEASE!
annugon 1 year ago
we really need subtitles! Like Ted.com conferences... PLEASE!
annugon 1 year ago
Thank you for the welldone vid---and for the explanations on the cosmological constant!
johnjaksic61 1 year ago
Actually it is due to Galileo, he was the first to state the theory of relativity.
20robo09 1 year ago
They all have such nice voices!
Kiandatop 1 year ago
What if a galaxy is going one direction at light speed and another is going the opposite direction at light speed. Relative to each other what would the red shift measure??
MrCjGamble 1 year ago
MY QUESTION IS WHY ALL THE IMAGES FROM SPACE HAVE TO BE PASSED THRO THE VATICAN........WTF IS GOING ON???? THATS A QUESTION YOU WILL NEVER BE ABLE TO ANSWER WITHOUT HARD EVIDENCE!!!
MrCjGamble 1 year ago
"Science is about aesthetic." (5:50)
A memorable quote.
yusukeshinyama 1 year ago
The guy in the glasses actually says "Science is all about aesthetics" as an argument against a small Lambda? Sorry dude, but science is about the data, not your personal sense of what is beautiful or pleasing.
disrxt 1 year ago
@disrxt
Science is not merely about looking at data, but figuring out useful ways of interpreting that data that are harmonious with the real world. The question is one of getting a theory that elegantly explains all that it has to explain. He's saying that if you go by quantum theory, your lambda has to be so ridiculously huge that the universe would tear itself apart. But if you look at what has been observed, it's very small. So the challenge is getting a theory that can explain both.
Highbrowser 1 year ago
@disrxt
He's saying that if you go by quantum theory, your lambda has to be so ridiculously huge that the universe would tear itself apart. But if you look at what has been observed, it's very small. So the challenge is getting a theory that can explain both.
Highbrowser 1 year ago
This has been flagged as spam show
@disrxt
He's saying that if you go by quantum theory, your lambda has to be so ridiculously huge that the universe would tear itself apart. But if you look at what has been observed, it's very small. So the challenge is getting a theory that can explain both.
Highbrowser 1 year ago
Three people think the cosmological constant is zero.
ClayCompton 1 year ago
im gay
Nzvaldes 1 year ago
Couldn't the universe be expanding just from residual momentum of the big bang?
anonysquirrel 1 year ago
@anonysquirrel The Big Bang was not an explosion, that is a common fallacy. It was an expansion of space time, there is no momentum. The expansion is accelerating over time, not slowing. You'd expect it to slow to zero eventually if it were the result of an explosion. Lambda is a property of empty space, which is not "empty" but filled with quantum fluctuations of virtual particles.
disrxt 1 year ago
Space is spiral
rolandas1985 1 year ago
So... if the expansion is accelerating then it couldn't have started from a 'big bang' unless im totally missing the understanding of the big bang theory? Im confused anyhow.
G3org3Master 1 year ago
the way I see it, einstein's general relativity definitely needs change; this is because it is incompatible with quantum field theory, not just when it comes to the cosmological constant... I am talking about the whole quantum gravity business; the theory of everything; the world is clearly subject not to relativity or QFT but to a law which is in relation to both like special relativty is to newton's laws;
bbphnix 1 year ago
Can you tell me where to find the picture used at 2:05 and 6:40?
Those diffraction "pillars" look rather nice.
JuanLeTwnz 1 year ago
Can be your nerd roadie? i'd love to just go around to meet all of these wonderful scientists...
TheToxicRadio 1 year ago
Why wouldn't the Cosmological Constant be the speed of light?
Treetale 1 year ago
people that comment on these videos... we get it, YOUR INTELLIGENT, know calm down!
harryreid09 1 year ago
Was that supposed to be a witty remark, or a real request for order on the comments of a youtube video?
Ibogaine306 1 year ago
@Ibogaine306 neither, it was a command, to which everyone should follow.
harryreid09 1 year ago
@harryreid09 I happen to agree, but doubt you will see results.
Ibogaine306 1 year ago
Did Einstein ever actually explain why he thought it was a mistake? He's never seemed the kind of person who would remove it without good reason. I'm assuming the guy who invented relativity didn't remove it for philosophical reasons.
Philosification 1 year ago
@Philosification, I believe he considered it a mistake because if he hadn't introduced the constant his theory would have predicted that the universe must be constantly expanding. So that later, when Hubble showed that the universe was expanding, it would be another confirmation of relativity. By introducing the cosmological constant his theory becomes consistent with either an expanding, static, or contracting universe--making the theory appear more contrived than it actually is.
ananiasacts 1 year ago
Great video. I love your work in assembling these explanations.
hikergate 1 year ago 27
@hikergate thank you... get our fair share of positive and negative comments, but always enjoy the positive ones more! ;)
sixtysymbols 1 year ago 8
@oldschoolskill
"students looking for science information on the Internet"
Yep, I'm 15 and don't understand these videos.
But it's still interesting.
I'm scared of grade 11 physics.
I don't know about the American school system, but I feel the Australian school system works great.
imalwayswatchingu00 1 year ago
@imalwayswatchingu00, It seems incongruous to be both scared of 11th grade physics and simultaneously enthusiastic about the quality of your school system. Did you mean in general? (Except for the fact that it makes physics look frightening?) You might enjoy Conrad Wolfram's TED talk about teaching mathematics. I suspect from the enormous popularity of the KhanAcademy on youtube, and talk's like Conrad's, that we're in the middle of a quiet revolution in the methodology of education.
ananiasacts 1 year ago
Half Life...
Xxpetrandr007xX 1 year ago
These scientists seem open minded compared to most these days who stick to a theory like it is a scientific fact, almost like a religion.
Love these videos.
NathBonn 1 year ago
@NathBonn, like the pythagorean theorem? Or the theory of evolution by natural selection? They're both facts. There is every reason to treat them as such.
ananiasacts 1 year ago
@ananiasacts
I completely agree with those. please don't take my comment the wrong way.
NathBonn 1 year ago
ohh those videos don't have thumbs down.... that's quite awesome :D
lorena0987 1 year ago
Comment removed
lorena0987 1 year ago
This guy is a massive pile of lame.
Vastballistics 1 year ago
Comment removed
lorena0987 1 year ago
is the constant a very small amount of energy that just blankets the universe in all locations? Like Photons or something?
jgordon707 1 year ago
@jgordon707, I liken it to our banking system. If you analyze it one way, it doesn't make any sense--how can people pay interest on loans ff there is only a fixed amount of money in the world? Some people consider that proof that our money is genuinely meaningless and that we're ultimately due for a comeuppance because of that. Others feel that perspective itself is misguided and the premise is false. Money must be based on debt or it could not be used to make demands at all.
ananiasacts 1 year ago
@ananiasacts I hope this doesn't come off as rude, but that did little to help me understand the constant better. I missed the analogy part of it, if there was one. if you wanna talk about our money system thats cool I just dont see the connection.
jgordon707 1 year ago
@jgordon707, you don't come off as rude at all. I liken the cosmological constant to the interest rate on savings because they both only make sense as positive inflation rates and have many interesting shared corollaries. Both are measures of something somewhat intangible (the expansion of wealth is similar to the expansion of space--everywhere and uniform locally but not necessarily globally, etc.) And as I was trying to point out, both seem to have mysterious somewhat paradoxical properties.
ananiasacts 1 year ago
Hey!!! everybody!!! .... chill. :)
Rascal157 1 year ago
@OldSchoolSkill, in Conrad Wolfram: Teaching kids real math with computers ( watch?v=60OVlfAUPJg ) he explains my perspective on math very well. I not advocating teaching them less, or how things are done--quite the reverse. I'm advocating (and trying to design myself) a meaningful role for them in local civics where children maintain the ontology used by their local government to represent its data in a sort of game. Effectively creating a map of their local economy which earns them income.
ananiasacts 1 year ago
@OldSchoolSkill, I think our culture itself has rendered primary schools (both in form and content) virtually obsolete. It's simply not information that children can actually put to use--it grows ever more sterile and abstract. Even things like arithmetic are simply not skills we typically use much. I think we need a paradigm that creates a meaningful, productive, and financially rewarding role for children in society from the youngest ages possible. Demand driven education would be faster.
ananiasacts 1 year ago
5:05 I wish he'd say 'cubic centimeter, or sugar cube's worth of space' rather than "centimeter cubed" which probably doesn't mean much to most people. Gosh I love these videos the most of anything on youtube. I wish you'd do lots more of them. One every hour would be about right.
ananiasacts 1 year ago
@OldSchoolSkill I'm sorry I meant to add a emoticon to the end of that comment to show that it was meant to be humerus. I was merely reflecting what I took to be the meaning of your comment back on you. "So a bunch of academics and lecturers failed to explain a hugely complicated and counter intuitive idea in a way everyone could understand in a 7 min video. That must mean they have an alterior motive!!!111 :-p" Or they could just be trying to do there best?
WhichDoctor1 1 year ago
i WILL MODIFY EINSTEINS THEORY. HOW 'BOUT SIMPLY E=M. that seems to make alot more sense.
camelsonhorizon 1 year ago
@camelsonhorizon Except dimensional analysis tells you it makes no sense at all.
eltotoX 1 year ago
@OldSchoolSkill Nahhh! Let it blow over! In the mean time, on web, check out 'skeptoid' by Brian Dunning - imo best science/critical thinking podcast on web! (if u havent already) And great forums with lively debates. Prob the best thing anyone could have done for me as a kid would have been teaching me how to think critically and scientifically. and u can make all the suggestions there u want! Go there and do yr kids a favour!!! :)
jeebersjumpincryst 1 year ago
@OldSchoolSkill "Who pays for this series? What is their motive?" - A comment such as this is stock standard for a conspiracy theory/paranoid website/forum.
In this light, I hope you can understand now how many might perceive this, even though u didnt mean it like that.
Educating the web is a noble thought -i wish you luck!
As you have discovered, Brady's channels have a fairly hardcore loyalist following, and most are just grateful for this rare, free, quality science on youtube.
:)
jeebersjumpincryst 1 year ago
@OldSchoolSkill I find your post about Americans being unable to understand these videos ironic: after all, you're American. So please, go away and never come back.
Texruska 1 year ago
To project this further...the rate of expansion is a curve. That is, the distance from the "big bang" makes a slower rate of expansion as you move out from the point of the big bang. Then will the rate of expansion slow until it stops, and possibly reverses? Or is this a given, and I missed the point?
rcguy47 1 year ago
3.46 ZOOM!!!!!
XxFaViAnXx9 1 year ago
@OldSchoolSkill I'm an American and I understood this perfectly. Making broad generalizations like "most Americans would not understand this" only makes you sound ignorant and pretentious. Nobody wants help from someone so condescending. Although I agree that science should be made more accessible, I doubt many people come to this channel expecting accessibility; considering its dedicated to discussing some of the more complex theories in physics. Take your arguments to an introductory channel.
majorjosh 1 year ago
@OldSchoolSkill defjam99b said that, probably because the of the final sentence of your first comment, where the implication seemed to be that the makers of these videos were in the pay of "big (pharma/tobacco/young earth creationists/NWO/reptoids/illuminati/ insert yr favourite or most scary here)". It just seemed a very conspiracy sort of thing to say, imo anyway. How did you mean it to come across, btw? :)
jeebersjumpincryst 1 year ago
Thumbs up if OldSchoolSkill just wants the video dumbed down for himself.
Digeridude 1 year ago
"he didn't change the laws of physics that much"
chaoticmeredith 1 year ago
The video is kinda laggy
Draxis32 1 year ago
@Draxis32
Your computer is lagging
Valendros 1 year ago
Steven Weinberg gave a good comparison of cosmological constant which is the value of dark energy/cosmological constant is almost equal to the energy in a few gallons of gasoline in the volume of a sphere of the size of the earth.
p.s I'm not trying to be cocky, just sharing an example that might help you get some idea of the value of the cosmological constant.
muzammilali007 1 year ago
don't zoom in so close on the guy who bobs his head around so fast.
tehsimo 1 year ago
If they keep changing the value of the cosmological constant it's not very constant, is it?
theguycalledchris 1 year ago
@OldSchoolSkill
Disagree. Take the science out of science, so people that don't know much science can "understand" science. What good does that do anyone? You are deliberately short-changing people.
Anything worth doing requires some effort. that includes a YouTube science clip. Not everything needs to be always aimed at the lowest common denominator, this channel seeks to aim a little higher than that.
The rest of your angry ranting is paranoid and delusional, and best ignored.
defjam99b 1 year ago
I'm very glad to hear these scientists being open-minded and sceptical about the cosmological constant. Its still an open ended question.
John.
john37309 1 year ago
Doesn't the quantum theory and the theory of relativity come together at the edge of a black hole? While the negative ions are absorbed into the black hole, the positive collect at the edge and are visible as light energy. Is that right? I think I read that somewhere. Not sure.
jab0805 1 year ago
i love sixty symbols :)
presbarkeep 1 year ago
is it only me or the fps are low?
2szymi 1 year ago
@2szymi Not just you. Something strange going on there. The sound is odd too... I can't find a comfortable volume.
McPrfctday 1 year ago
Pi*4 = bubble
okuma0kuma 1 year ago
So many people talking about upper/lower case lambda... I wonder how many people know it's (lower case) also the international symbol for homosexuality?
The more you know.
Tilaron 1 year ago
Anyone who knows Jeff Fosworthy is probably fmailiar with his comment about how people typically want to deduct about 100 IQ points whenever they hear some one speak with a southern American accent. I think it's the opposite with an "English" accent.
captwasabi 1 year ago
What if the constant is like other forces in that it drops off exponentially? On the quantum scale it could be huge as the mechanics suggest, but on the cosmic scale it is small. That makes sense because when our universe is small it expanded the fastest then.
TheAtheistPaladin 1 year ago 5
@TheAtheistPaladin The least intelligent way of putting the BEST ANSWER EVER
Ibogaine306 1 year ago
Thats what i love to see 172 ups 0 downs
biggi3lue 1 year ago
ah I remember this from AS 102
dave3030 1 year ago
quantum fluctuations in strings cause there to randomly apear large stings all over the place adding a little anergy to empty space... LOL
lepthymo 1 year ago
Man, I love these videos.
matics19 1 year ago
I love it when they show the pictures of stars :D and you can sometimes see a spectrum, it's really beautiful :)
TheLordZixx 1 year ago
@OldSchoolSkill
If you do not understand what is being said in this video, you will never truly understand the concept no matter how dumbed down the explanation is.
LamaPaj 1 year ago
I don't understand much about this but I am in love with this shit...I enjoy the concept of it but I don't understand and that's good enough for me..
UncleSteven69 1 year ago
I think a lot of criticisms on this channel are invalid.
Those who don't understand this, should first see the lecture by Lawrence Krauss:
'A Universe From Nothing' by Lawrence Krauss, AAI 2009 @05:55
After that this one should be a nice intermediate lecture. I think this one is just fine as it is.
AlainG80 1 year ago
@OldSchoolSkill "Most Americans" wouldn't understand this video? As opposed to whom? Most British people? Most German people? What are you even talking about? America is not actually as dumb as everyone seems to think. I found this video very clear and informative, and it (and other videos on this channel) are fantastic resources for the lay public with an interest in science. Who without an interest in science would watch these videos, anyway?
LFZ15 1 year ago
"Einstein's original model had the universe expanding"
Sorry but that is utterly false. According to Einstein's original model the universe should COLLAPSE (not expand) because gravity should induce it to collapse under its own weight, that is, mutual attractions would cause all galaxies or large assemblies to be pulled toward one another, since they had insufficient velocity to resist the attraction.
SuperFinGuy 1 year ago
That is why Einstein came up with the cosmological constant, a hypothetical force to act as a repulsive constant in order to prevent the collapsing. The expanding models are not predicted by general relativity at all, they were proposed as ad hoc solutions by Alexander Friedmann. Look it up
SuperFinGuy 1 year ago
the speed of light is also a constant ;-)
Blinkwing 1 year ago
@OldSchoolSkill is there any particular reason why you say americans wouldn't understand it? if you look at those statistical graphs on previous nottingham videos, you'll see the US is about the 2nd highest in most views, so clearly americans understand. if you're basing your idea on educational stats, keep in mind that the US includes EVERYBODY, including the mentally incapable. other countries deliberately only keep track of people who actually graduated or are currently going to school.
schmidtbag 1 year ago
lambda (as a word, not a symbol) is also used in programming but seems to be completely irrelevant to the way it is used in this video haha
schmidtbag 1 year ago
Why the crap didn't you mention HUBBLE. That's why cosmologist use big H as the cosmological constant. And to be quite frank, I could care less about how ofter quantum field theory fails. It fails all the time so stop mentioning it and start mentioning the things we have actually measured and the people who measured them. People probably want to know why they named a giant telescope after a particular person.
525047 1 year ago
I've understood the purpose of humanity.
Its to study physics.
intemister 1 year ago
@OldSchoolSkill There is other shows and books that try explain everything from the ground, like latest Stephen Hawking book, I actually did not liked latest book exactly because it spend way to much time explaining basics - I'd rather watch something for more educated people.
Yeah there are a lot of people without normal scientific education, but that's not our problem is it?
nirthfurzahad 1 year ago
@OldSchoolSkill
If they were to start from the very basics and try to explain all the concepts they talk about it'd be several hours long and missing the point.
Not all science presentations have to be dumbed-down for everyone to understand.
kwasislaw 1 year ago
I wish i had the brain to comprehend physics, it is so interesting but with my grasp of mathetics impossible to understand the theory behind it :) il be ignornant in my ability to understand
Davehuddy123 1 year ago
@OldSchoolSkill To pick up on only one of your ridiculous points, how is this inaccessible to the "lay person" (not that it necessarily should be.) Everything is explained in completely clear English, it uses images, examples and so on to explain every term. Maybe an infant couldn't sit down and follow that but anyone with the mental capacity of at least a 15 year old could come away from this having learned something.
LeKioskMusic 1 year ago 25
Go to university boys. That's they only way to go.
mrteemumilto 1 year ago
@OldSchoolSkill The nature of your comment makes me wonder what your motives are. Who are you working for? Some rival University, the government, aliens? You certainly cant be an ordinary person just trying to do your best, that's a ludicrous idea!
WhichDoctor1 1 year ago 2
another cracking episode!! iwant to be in a room with all the scientists for like a week it would be awesome!
jamiehasnomercy 1 year ago
@OldSchoolSkill I thought the video did a marvelous job. He even explained in detail what a constant is...how dumbed down do you think it should be?
zapo147 1 year ago 4
nice to watch a new sixty symbols video but unfortinately I didn't understand what they were talking about very well so it wasn't very educational for me, but there are probably alot of people for who it was good to watch
Zee96969696 1 year ago
@OldSchoolSkill If you'd done what a scientist would do; research, you would have found on their channel '
Sixty Symbols is a collaboration between The University of Nottingham School of Physics and Astronomy and video journalist Brady Haran.'
You claim this video does nothing to explain these to those not familiar with the concept however that was clearly not the aim.
That it is giving grist to the 'anti-scientific' agenda is an absurd and unbased claim.
Th3lliott 1 year ago 61
This has been flagged as spam show
conclusion: the big things behave very differently from the very small things
leungclj 1 year ago
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leungclj 1 year ago
I realize this is a philosophical question, and not a novel one at that, but allow me the curiosity to wonder if anyone might shed some light on this. If the cosmological constant is, as its name suggests, not contingent upon anything else, then could it be argued all contingencies arise from this non-contingent property?
BoStevoD 1 year ago
@BoStevoD The reality of the situation is this: philosophy is dependent on logic, which is merely what we observe to be true about the universe. An example of this is that something can't be two places at the same time. When it comes down to the exotic reaches of the universe, the very large and the very small, this logic no longer describes reality. Anything is possible, what we prove to be real is real, no matter how illogical it is. To answer your question: yes, it is possible.
zapo147 1 year ago
Great video.
It would've been really nice to see an image of Einstein's equation with the lambda in it.
AlanKey86 1 year ago
Could dark matter actually just be the mass that the cosmological constant induces in the universe?
Drag0nfoxx 1 year ago
@Drag0nfoxx He described the CC in terms of mass per unit volume yet the constant deals with energy. Through E=mc^2, you can calculate the amount of energy contained within the void. c^2 is about 9E16, much too small of a number to allow 1E-29 grams to produce much energy. There is so much dark matter in the universe it is mindblowing, what he is talking about here is dark energy.
zapo147 1 year ago
My favorite symbol for 1 reason
the Half Life series
but these videos have actually given the symbol meaning
thanks for all the videos
TechXMarine 1 year ago
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chrislongden4 1 year ago 37
@chrislongden4 The cosmological constant is denoted by the capital lambda (Λ), while the decay constant is denoted by the lowercase lambda (λ), which is used in the Half-life games.
Anonymous5125 1 year ago 2
@chrislongden4 Lambda is also used as a symbol for lenth of the radiowave
AurimaxII 1 year ago
@chrislongden4
its also the symbol for the wave-lenght...
Defonthana 1 year ago
Comment removed
chrislongden4 1 year ago 2
@chrislongden4 hihi...nono i never meant you didn't know that..i just love the symbol for this purpose...
aww would be glad to be a student there too^^
Defonthana 1 year ago
@Defonthana Yeah I know. I'm only in my first year but I've met most of the people who appear in these videos at some point. I was introduced to Sixty Symbols by Prof. Copeland who interviewed me when I applied to Nottingham Uni.
chrislongden4 1 year ago
@chrislongden4 its also used to represent a wavelength :)
Adrenalinism 1 year ago
@chrislongden4 Gonna have to play some Half Life now...
00gir00 1 year ago
@chrislongden4
It is also the symbol for wavelength :P
xMadSkillzx 1 year ago
@xMadSkillzx That's lowercase lambda.
MPS186282 1 year ago
Comment removed
chrislongden4 1 year ago
@chrislongden4 I think thats the lower case lambda (also used to represent wavelength in optics), this video is talking about uppercase lambda. Right?
borderm3 1 year ago
Comment removed
chrislongden4 1 year ago
@chrislongden4 isn't that the small letter lambda?
mignik01 1 year ago
@mignik01 Already been asked this several times today. Yeah. The Half Life games use the lower case lambda, which is why its far more likely to come from the radioactive meaning than anything to do with this video, which is the main reason I pointed it out to the random guy who mentioned the games.
chrislongden4 1 year ago
@chrislongden4 the difference is upper vs lower case.
In physics, lower case lambda can also be used for wave-lenght. It's also used in a lot of other fields, usualy refering to rates or distances.
gulllars 1 year ago
@gulllars I know. I am a physics student. I'm deleting all my comments on this video because I am getting frustrated with the amount of people replying with the same comment about other uses of Lambda which have nothing to do with this.
chrislongden4 1 year ago
@chrislongden4 lol-i imagine you now really regret asking that.Just read thru all the comments,after having to pause the vid,cause the flaming looked so interesting,and saw about a third of comments were all to you, and all telling you the same/similiar thing! I dont know what that phenomenon is all about - comment after comment after comment giving the same answers! What - can ppl not read anymore?! Just desperate to display that one nugget of knowledge? PS-the lamda symbol is used for... ;)
jeebersjumpincryst 1 year ago
This made my day
mojololo11 1 year ago 2