Cosmic Microwave Background Radiation - Sixty Symbols
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- Опубліковано 25 бер 2013
- Professor Ed Copeland on the latest news to come from the Planck project - talking about the Big Bang and the resulting microwave radiation.
More from Planck at: www.esa.int/Our_Activities/Spa...
Ed is on Twitter at: / profedcopeland
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This project features scientists from The University of Nottingham
www.nottingham.ac.uk/physics/i...
Sixty Symbols videos by Brady Haran
A run-down of Brady's channels:
periodicvideos.blogspot.co.uk/... - Наука та технологія
Professor Coplend can announce the end of the world without causing public panic
Because 80% of the people listening wouldn't understand him, and the 20% that do would accept fate and maybe even be a little relieved by it.
@@SkywalkerSamadhi ugh
Who thinks Copeland is the best and most calm physicist in this channel?
This is glorious, I have been researching "what universe is earth in?" for a while now, and I think this has helped. Have you heard people talk about - Bannrial Bizarre Bulldozer - (Have a quick look on google cant remember the place now ) ? It is an awesome exclusive product for discovering your spiritual animal and the clues it has to your future success without the normal expense. Ive heard some incredible things about it and my work buddy got cool results with it.
He is the antithesis of Moriarty. If they ever meet and touch they will cancel each other's existence out, and the world will be an emptier place.
Affirmative.
I only come to this guy for my dark matter content.
you obviously haven't watched the four types of multiverse episode
Professor Copeland is easy to listen to without getting bored or sleepy!
maybe a little sleepy, he's got a soothing voice. i'm thinking of asking him to marry me and read bedtime stories aloud every night
“If you can't explain it simply, you don't understand it well enough”
Excellent video. I love these. Keep up the good work.
Brady asking questions while filming is an important part of why these videos are good. It gives us the layman's perspective as well in a very natural way. :)
One reason Brady is so terrific in these videos is that he asks very intelligent questions. Great job, Brady, as always. Thanks a bunch!
This prof is my favorite, he always has a smile on his face when he gets to answer Brady's questions.
Simple and easy to understand without turning us into fools and giving "dummy" examples. Excellent video! Thanks!
for me it wasnt that easy to comprehend fluctuations in the field that imprinted themselves on what ? is CMB old light, or those fluctuations in the quantum field, or is CMB statisticly calculated by subtracting all other radiation ?
i would be grateful if u could explain me this, i envy u that u can understand this stuff that easy..
MarakanaCacak1989 The cosmic background fluctuations were captured by the COBE (cosmic background explorer) satellite. Cosmic background is basically old light yes, and that light traveled long distances to reach cobe. What happens when light travels long distances is that it's wavelength changes through space. So scientists look at the sky with cobe and capture a lot of kinds of wavelengths, but they know what wavelength to expect and what not to... And they map the cosmic background. Anyway, if you want a suggestion to read more about stuff being explained from the very basics go take a look at Stephen Hawkings books "a brief history of time" and "the universe in a nutshell "
Igor Perfeito Vivo thank you very much
Hook 'Em Horns!
off all the lectures, videos etc that I have seen on this particular subject this explanation for me at least, is the best one. The way the professor explains it just clicks like a light bulb just lit up lol Thank you for this video I truly do enjoy Dr Copeland and his way of explaining things. It would be just a privilege to take any class from him in my honest opinion.
Yep, totally agree.
Man I love these lengthy videos :) 17 and a half minutes of awesome!
Keep it up Brady (and the rest as well of course)!
What a wonderful man. Not assuming we are idiots but taking his time to explain it with out using layman analogy so we actual learn about how it worked. Thank you Prof Copeland I truly appreciate you.
sixtysymbols is the best science channel on youtube. Thanks for all the videos
I did my 3rd year physics project on this, glad to see it being explained so well so everyone can appreciate this beautiful piece of data ❤
Brady: thank you for asking questions we all have!
You are a great interviewer, Brady. Thank you for making these videos possible.
Brady, you always ask the questions I am thinking. It helps me get the most out of the topic! Thanks for the great questions!
Why does this line up with earth and our solar system?
The only question I have too... more than an anomaly
@@mirrariz4248 Only because we are the observer. Everything we see becomes a perfect sphere around us
Please someone answer this question if you can. If this light was released a few hundred thousand years after the big bang, how did we (our matter) get to where we are now, before this light reached us? The universe doesn't expand faster than light does it? If it did the light would never reach us. Wouldn't we have to out run it for some of the 13 billion years then slow down for it top catch us up? Which I know doesn't make sense.
Let me try to (partially) answer your question. You seem to imagine that we are at a 'location' where we weren't in the past. On the large scale (galactic supercluster level) we aren't moving and haven't moved - much. The expansion of the universe is the expansion of space, not specifically objects moving apart - even though it seems that way. This means that there is no central point in the universe. Everything on a large scale, appears to be moving away from us, so it SEEMS like we're in the middle, but if you were to go to a galaxy 10 billion light years away in any direction you choose, it would look the same. You'd still appear to be in the middle. The universe appears to be spherical, with us at the centre. But, due to the finite speed of light, you could never get to the 'edge' - not even theoretically.
As for the universe expanding faster than the speed of light (c), think of it this way: Nothing can move past another thing faster than c. But picture a galaxy 5 billion light years away, moving away from us at 55% of the speed of light (this might not be an accurate figure - I'm going from memory) relative to us. Now imagine that a galaxy 10 billion light years from us is moving apart from the first galaxy at 55% the speed of light. Add the 2 velocities together and you get 110% of the speed of light - which should be impossible. But it's not, because nothing on a local scale is moving apart at more than 186 thousand miles per second (c). It's the SPACE which is expanding, and the accumulation of sub c velocities (on a large scale) CAN exceed c. This is why we estimate the size of the universe to be some 90 billion light years across, not 2 x 13.8 billion, which you might expect. Just remember that it's the SPACE which is expanding!
finlarg if the relative speed between 2 galaxy is 110% c then how are we able to se the photons released by galaxy
Deepanshu Gajbhiye Because we are seeing photons from it when it was younger and closer. If it only came into existence 'now', we would never see it - it would be beyond our horizon.
but i cant understand how that photon is able to reach us also i dont think that that photon can exceed speed of light bcoz it will require very high energy and extremely low mass as E=MC2 then c= sq root of E/M
Deepanshu Gajbhiye You're mistaken to think of 'that photon'. Photons are continually streaming from all stars and galaxies. When we look at a galaxy which is 10 billion light years away, we are seeing it as it appeared when it and the universe were only 3.8 billion years old. All of the photons it emitted after that point, haven't reached us yet. In the far future, it will disappear from sight, because of the expansion of the universe. This does not mean it has ceased to exist, but it means that the expansion we talked about before has caught up with us.
This was the best explanation of the CMB I've seen on YT yet. Fantastic video.
Great to watch this after the latest discoveries and, of course, Brady's videos. A storyline of possible discovery!
Many of the questions below fall into place one you recognize the "axis of evil" puts Earth near or at the center of the universe.
The Axis of Evil is only there when you're particularly looking for it. It's been now pretty much proven without doubt that these where data fllukes.
@@Raydensheraj
Nope!......Planck CONFIRMED the anomalies and the data showing the Earth centered universe. :-)
Wish I had this quality of professors at my university. Mine seem more worried about gender neutral pronouns.
@ thomas: I initially read your comment too quickly and thought you said "gender neutral protons"!
Yay! Thank you Brady for this, been wanting a CMB video for a while.
When I am bored or sad or down for any reason, I always come here ( to this channel) and listen to Prof. Copeland talk
Amazing video Brady and Ed. 17 minutes of my life well spend. Wouldn't mind watching more about Planck and the CMBR though I know there isn't a lot more to talk about right now.
Keep up the great work. Your work is greatly appreciated!
I really like Prof Copeland's way of explaining things. You can tell that he has a really solid understanding of the fundamentals.
WOOOOW! Brady you saved my day! I was bored so I looked loaded youtube and first video on my subscription list was from SixtySymbols and it was 17 minutes long! Thank you for your work!
Hi Brady! I've been waiting for this one! :D
Brady's videos are awesome. They are extremely interesting and extremely informative. They encourage people to learn, and as everything is explained everyone should be able to understand. Brady, you are awesome.
Thanks for making these Brady!
Another excellent and interesting video, thanks Brady and Prof. Copeland
Outstanding video once again Brady, thank you!
Was hoping you'd do a video on this, thanks Brady!
Outstanding video!
Also I was pleasantly surprised by the length of it.)
this video was amazing, more like this please brady!
You have so many videos, one of copelands videos gave me such a profound sense of appreciation of space. I self realized as a grain of sand grown of this great wave that happened to wash to the surface on a great wave. I wish I could’ve book marked that video
brady always asks the best questions.
Hi Brady! :) You are doing a wonderful work as always! This is one of the most interesting videos you ever made and I would be really thankful if you could add English subtitles :D
Thanks :)
7:42 thank you so much brady for asking this question and appearing "silly" in front of a specialist in the field, I have asked myself this plenty of times but as I dont study cosmology I always thought it was just too technical for me to understand. Thanks!
I love the way Brady asks questions.
Great explaining video Brady. Thanks again :).
This might be the best explained sixtysimbols video so far. I have understood almost everything :)
Sixty Symbols videos are always great, but I feel like Professor Copeland outdid himself with the explanations in this video. Thank you, Grady and Professor Copeland!
That was very informative and amazing. Thanks for posting.
Best explanation i have seen so far. Great!
This guy is so likable. He speaks so clearly and has such a pleasant attitude. I really enjoy his videos.
Great explanation. This makes the CMBR much more understandable.
Brady is so frickin' good at asking questions.
I haven't started the video yet; I'm basking in anticipation of the next seventeen minutes. More long physics!
amazing. one of my favorite video!
it's because he seems patient and soft spoken. calm and professional. exactly what a professor should be. =]
I've never heard of the Inflatonfield, thanks for this post! Keep rockin'!
Wow, I actually think I understood most of that! What great videos! Thanks!
Ed Copeland rocks! And I love the board full of equations in every sixtysymbols video! xD
Love the really complex stuff!
Very well explained and informative to untrained ears, relevant and discuss-able to professionals
This is the clearest most understandable explanation I have yet heard about the beginnings of the Universe & the forces & energies involved in its expansion/inflation. Trying to reconcile the extremes of scale is taxing.
Please thank Professor Copeland for his patient & thoughtful explanations.
I think I begin to get a grip on it. Thank you!
Great Scott! Light from cold and heat from dark.
Was wondering when this was going to talked about :P. Super Great!
Great video guys =)
great video by ed ^o^ great explaination
Brady, thank you for showing the sheer level of fascination and wonder that all of your interviewees bring to their respective fields. A question for you: have you considered doing any bits on the professors' reactions to fringe propositions? Asking Prof. Copeland, for example, about Plasma Cosmology; or, say, Dr. Aboobaker about ID?
I'm keen to see how each deals with the woo in hir field.
Be that as it may, congratulations for being so amazing!
08:00 "This is what makes this so cool" Truly a man who loves science. Well done lesson on CMB and Plank without the maths.
It's using the Mollweide map projection, it exists to enable more accurate proportions (so one area on the map of a certain area should have about the same mapped area as any other), at the expense of being less accurate in terms of shape.
It is of course possible to map the data to any map projection, but using one that favours proportions over shape makes a little more sense in this case because it makes it easier to compare different spots.
a master class explanation
This, yes, THIS!
1. Does the CMB have a rest frame, and are we moving relative to it? (Possible dipole explanation, but it breaks everything else...)
2. COBE -> WMAP -> Planck -> ??? What's next in exploring the whole-sky CMB?
3. What have we learned (since BICEP2) about E-mode and B-mode CMB polarization? Will this finally end all talk about cosmic strings?
4. Does CDM have any imprint on the CMB? If so, what is it and where is it? If not, why not, and what does it tell us about possible CDM candidates?
So many fundamental questions!
For the first time in my life, i actually understand the Cosmic Background Radiation. I was always so confused by the seemingly random 380,000 years and the ability to distinguish original background radiation from all other sources of heat in the universe. Thank you Brady and Ed.
interesting stuff, thanks professor :)
Absolutely agree with you! But i love your choice of the word "devolve" ;)
Excellent video! I appreciate what you do, Brady. Hearing this stuff straight from the horse's mouth, as it were, is incredible. I wonder if all your questions are equally inspired, even the ones that don't make the final cut.
Every time Professor Copeland said "degrees Kelvin," I cringed a little, but I love hearing from him. :D
more please MORE!
The professor talks absolutely wonderful!
This sounds awesome!
Hi Brady, will you be putting up an uncut version of this video? Would really like to hear the rest of Professor Copeland's explanations :)
Yeah, he's always done a good job at that. It's quite helpful.
Prof. Copeland could totally do a relaxation series. His voice is amazing. Here he is describing THE most violent event in the entire history of the universe and my pulse rate and blood pressure are probably the lowest they've been all day.
He's so interesting, I could listen to him all day!
thanks
The way in which we measure temperature is by monitoring radiation from the target object, or reflecting radiation off the target object. The radiation itself is bound by the speed of light.
That said you make an interesting point about the temperature being roughly the same everywhere. I had made a misconception about what they were talking about, as I thought the were talking about the edge of the observable universe.
Professor Ed is the best!
Thank you, it just seems like something they would have covered here as well.
You are right, and I am quite sure he knows Kelvin is not counted in degrees, but just to clarify for people who might have heard/ thought it was this way. Also note (can't remember if he said this in the video) that the Celsius scale scales the same way the kelvin does, so the unit "Kelvin" \\Is the same as\\ the unit "Degrees Celsius", only with different datums.
I saw that Minutephysics as well :P
Thanks.
Thank you
Outstanding
I like this guy's voice, it's so calming.
Conformal topology :-) It preserves the angles even through the transformation. Local scale in every direction is constant.
Penrose actually published a paper on certain observed anisotropies in the CMB data from WMAP a while back, which suggested the effects of a universe prior to the big bang. It's on arXiv somewhere! He also has some popular lectures on youtube about the theory. He's a pretty sound guy.
Beautiful.
would it be possible to upload full interviews? :O It's really interesting stuff you do. :)
I understood it perfectly, thanks.
Dodleson 's book is a gem of a book on this subject
I love Prof. Copeland. I don't know what it is but I think he's awesome.
In portuguese we say the corresponding to "X degrees Kelvin" much like we also say "Y degrees Celsius". This is because it helps your public better grasp the context of the sentence and is considered confusing/incorrect if not applied.
The universe was opaque from the very start until the 380 ky epoch. The fluctuations in the inflation field led to fluctuations in the plasma that persisted until decoupling, at which point the spectrum became permanently fixed (ignoring cooling and matter interference) with those fluctuations embedded.
Have they talked about peculiar velocity and how it doppler shifts the CMB? Also the consequences of having a natural "rest" frame in which the CMB is isotropic? I'd like to hear more on that.
An actual 17 minute video explaining something? Yay!~
Most photons can xfer heat in some way, depending on the material (I'm glossing over a lot due to char limit):
Microwave (and some RF): EM dipoles in food rotate to align with fluctuating EM field, called dielectric heating. Also see ion-drag.
Infrared: causes vibrations in the molecules.
Visible/UV: typically absorbed by electrons, then can be re-emitted at lower energies to xfer heat.
Microwaves are nice because they can penetrate deeper into food. Also note they run at high energy: ~1 kW.
The Univers is 2,73K or to be very exact 2,7255K. The temperature differences between cold and hot spots is within 200 microK. The cold spot means CMB signal basically missing compared to reagions nearby. Nice interview!
I understand your coment and I think it's a good question. My answer is those things are observable, you can "see" how those things are in nature like the speed of light or how the energy of light transfers to heat; but what has not been understood is why they behave the way do to begin with.