Time Dilation | Physics with Professor Matt Anderson | M29-04
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- Опубликовано: 2 окт 2024
- What happens to time when you have somebody zipping by in a rocket ship? Is time something that universally progresses at the same rate for everyone, or is there more to this story?
Physics with Professor Matt Anderson
I never thought I'd say this, but these lectures are great fun to watch
Awesome to hear. I'll tell my students.
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Dr. A
made months of misunderstandings crystal clear in seconds, amazing work!
Why didn’t I find this channel when I was taking Modern Physics last semester😢 It was made 1 year ago!
Thank you, God bless
Thanks very much.
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Dr. A
how are you writing on that glass from your right to left....and with glowing ink of pen .....how ..
by the way I'm from India and you are doing a great job........😊👍
I have always wondered about this: I understand that if twin A is stationary on earth, and twin B travels in a fast rocket, that time moves more slowly for twin B. But if frames of reference are all relative, wouldn't it also be that case that, from twin B's frame of reference, twin A and earth were moving away from him very fast? In which case, wouldn't time slow down for twin A? Which would lead to an oxymoron.... ?
ok, I just saw another person asked essentially the same question. I'll view the RUclips video you recommended. Thanks!
Thanks
Prof I need assistance with this problem,
A black body at 7000K has a 0.1nm diameter in it.Estimate the number of photons that escape per second from this hole and that fall in the range of visible light,say from 400 to 750 nm
You should research something called NSOM (near-field scanning optical microscopy).
Cheers,
Dr. A
BS! "Moving clock run slow"???? Is the language of ..physics or poetry? The formula is super simple but the interpretation of this parameter of time (and also of distance) is a typical textbook's BS! In the end, he almost got the right answer: "It looks like" (ok!) that the so-called ""particle" lives "longer but immediately he repeats the first statement as applied to the twin in a spaceship: "he will live longer"! Hm, what about from the point of view of the spaceship that in its own reference system is at rest and the other Twin(clock, particle) is now moving? A perfect reverse situation (the Lorentz formula is symmetrical in a sign expression: one only exchanges the subscript "o" in (t^0-at the bottom) with non in t = t^0/(1-(v/c)^2)^(-1/2) - the Lorentz formula! More, this "particle" is not a point particle, it is a stream of something that reacts with a measuring device but mathematically one can attach a time to just one (fictional particle) instead of a statistical set of disintegrating radioactive nuclei.
The twin paradox, a classic! I found a great take on it here:
ruclips.net/video/h8GqaAp3cGs/видео.html
Cheers,
Dr. A
@@yoprofmatt ???My short Answer:BS! 1)Make a reverse situation and make a calculation! 2)it is takem from plenty textbooks: Halliday-Rssnick, Inferno, (with a fiction: "light-clock") but..make a calculation with the real atomic clock as in A.Einstein,Rel.1916Apend.III,c;spectralLines disciple.: what is a unit time@Period of a "traveller"????
Dr, I assume the formula you wrote should be as follows,
Del T (for moving object) = del t (for object at rest) / sqr root (1 - v^2/c^2).
I think you flipped them. Object at rest should be in the right hand side of the equation.
Okay an easier question, does time dilation have a counterpart? An opposite effect?
This may be going to the theory or relavity one of the examples being the faster you go the slower time exists which is a misconveption. If you were riding a rocket and traveling at the speed of light. You would experience life at the same rate of reference as the moment stepped on the rocket on a dead stand still. Though the moment you step off the rocket and speak to someone you are familiar with you may notice a subtle difference in the difference of age. While you may have only aged 2 years they might have aged 2.5 or 3 depending how fast you were going and for how long.
@@carsondinwoodie5840 Okay I understood the explanation offered by the Professor regarding dilation and my question is 'if we can slow down time does that also mean a process exists that could speed up time?
In special relativity, no. But it gets quite a bit more complicated when you consider stuff like wormholes. Kip Thorne at Caltech developed some interesting theories about time travel with wormholes. And I am definitely NOT an expert in any of that. Have fun researching, and keep up with the great questions.
Cheers,
Dr. A
You made a mistake, in higher speed IF particle must be longer alife compared with earths life time. But this also is not true. The men in orbit will just measure same life time, because his time period, was dilated longer. Life time of particle is invariant, else we would know that we are moving.
But there is no absolute frame of reference. So on what basis do you say which object is moving? You said from the perspective of the one in the spaceship time moves more slowly. But from the perspective of the one in the space ship, it is the person on earth that is moving. There is something missing from this explanation. Otherwise they each think time moves more slowly for the other one.
Exactly. That's the "paradox" part of the twin paradox.
Great video here:
ruclips.net/video/h8GqaAp3cGs/видео.html
Cheers,
Dr. A
So potentially immortallity Doctor?
Yep. I better start stretching.
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Dr. A
Will see you in the future
Always.
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Dr. A
Yeah, I'm not this smart
Me neither. Good thing Albert came around.
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Dr. A
sup
Not much. Sup with you?
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Dr. A
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