I think I like this proof the most because it's incredibly simple yet doesn't compromise on elegance. Lemme know what you think in the comments.
Пікірлер: 29
@Isaac-mt9hx9 ай бұрын
Your physics videos are always welcomed!!
@ishu45359 ай бұрын
Amazing video as always.
@anupamamehra60689 ай бұрын
do you find these proofs from sources or you come up with them?
@maths_5059 ай бұрын
This is from Einstein's 2nd paper on relativity
@illumexhisoka61819 ай бұрын
I will come back after I have a better handle of physics 😅 But about math I have never seen you make any videos about limits despite the fact they are the core of cacules And I have great suggestion The lim trigamma(x)*x as x->∞ I hope you try it
@marylinebentzinger73789 ай бұрын
Please do more physics video, love them! (I love maths videos too don't be mistaken 😉)
@maths_5059 ай бұрын
Yeah I think I'm done with the mass energy equivalence videos 😂. Onto tensors and 4 vectors now
@kyleyu99359 ай бұрын
@@maths_505 yes bro as a physics student i would love to see your take on 4-dimensional formalism for special relativity
@AB-nu5we9 ай бұрын
Fun.
@zeta750119 ай бұрын
GOD ÉQUATION 😊
@markerena22749 ай бұрын
Neat proof, but isn't the kinetic energy really equal to gamma*mc^2 - mc^2 ? 1/2*m*v^2 works only for low velocities
@maths_5059 ай бұрын
Which is why I made sure to use the version of the Doppler effect valid for low velocities.
@daddy_myers9 ай бұрын
@@maths_505You mentioned explicitly at 1:22 that: "Here, the *relativistic* Doppler Effect applies". Doesn't relativistic imply that the object moves at the speed of light (or atleast comparable to it)?
@maths_5059 ай бұрын
The Doppler effect is a consequence of relativity itself.....one limiting application doesn't change that.
@markerena22749 ай бұрын
@@maths_505 and how do you derive the change in energy formula for the relativistic Doppler effect?
@maths_5059 ай бұрын
You can find one on Wikipedia
@fmakofmako9 ай бұрын
I think this is how I learned it, the other two methods you showed were great, but I didn't have a sense of familiarity. Are you planning on showing any other methods of proof? Since you've started doing these I've wanted to review some things in special relativity, but haven't yet.
@maths_5059 ай бұрын
Nah I'm done with mass energy equivalence proofs. I'd like to try 4 vectors though
@fmakofmako9 ай бұрын
@maths_505 gotcha, I wasn't sure how many proofs existed. If you did a series on Pythagorean theorem you'd have thousands of options (not saying you should).
@Afripol9 ай бұрын
It has been argued that Einstein's theory did not assign a definite stress-energy tensor to the gravitational field. Is this plausible?
@anupamamehra60689 ай бұрын
a beautiful result : integral from 0 to infinity of (root x times ln(x)) / (1+x^2) dx = (pi)^2 / (2root2). can anyone tell how to prove this?
@maths_5059 ай бұрын
Differentiate the beta function
@nathansnail9 ай бұрын
won't the radiation moving away have a higher perceived frequency?
@Ghostwriter_zone9 ай бұрын
Amazing proof ,quite simple and understandable. I'm sure that Einstein didn't revealed this way😂
@user-sf9qw2eb6c9 ай бұрын
Why is it 137? Fine structure constant
@Ni9999 ай бұрын
It's not. The fine structure constant, α, is 0.0072973525693, and its inverse is 1/α = 1/137.035999084, with a relative uncertainty of 1.5×10^(−10). It would be different if Planck's constant, the speed of light, the electric charge constant, the absolute permittivity, or π had different values - but they don't. We don't know why any of those things, including the fine structure constant, have the values that they do from first principles. We probably never will. We measured them, defined them all except for the fundamental charge (we still measure that, and confirm it by measuring the vacuum permeability to verify the fine structure constant, charge and c), and we've moved on. Perhaps some day we'll know more. Unless you're a theoretical physicist it's nothing to lose sleep over. We have much bigger mysteries to deal with and we're nowhere close to knowing that we're actually asking the right questions.
@user-in8zg9dq5z9 ай бұрын
Bro i saw all mathematics proof of e=mc^2 and Lagrange mechanic and i want coulomb law full mathematics proof
@dzuchun9 ай бұрын
omg, please stop mashing random equations together and proclaiming you've proven something. of course, rays reaching the rocket on your figure will have less energy, but the ones going away from it will have more energy. Not sure if these would be compensated, so I see no simple way to account for that. also, good job on again using approximate formulae in relativistic proofs, I guess it's fine, physics is all just an approximation anyway :clown_emoji: