so true. he points out key things in the law to help us understand, he doesn't just spits out the laws which is what most of my professors do. thank you and keep it up.
I'm Watching His Video in 2x Speed (because tomorrow is my exam! 😢) Still I Can Understand his Explanation.... He Is Amazing!!! (Bengali People Are Extraordinary!!!) U Just Nailed It Sir...!!! 🤩🥳❤️💓💗💖
I usually don't comment on videos but in this case I have to. Sir you are an incredible teacher, I love how you not only show the math but also explain the meaning behind each equation. This is by far the best explanation I have seen on relativistic momentum and Energy. I am definitely subscribing to your channel!
Top class presentation🙂! Superbly presented and the blackboard/chalk approach somehow renders the perfect pace, for some reason. Much easier to follow through to the end of the lecture than using text/graphics... no idea quite why. But compliments the presentation by this plainly knowledgeable lecturer perfectly IMHO. Look forward to viewing more of your videos! Thank you sir 👍
keep going like this, don't end this some kinds of a fantastic series before discussing four-vectors, minkoswkian metric and proper time, this will be foundation to understand General relativity. And maybe in future, you can start that series too, and subsequently this channel will become a ultimate undergraduate Physics digital archives
my mind just blew away after hearing "the energy contained in the body by the virtue of its mass at rest". It was so deep. So much respect for you sir.
By the previous comment I meant is safe to assume with so many particles falling into this black hole with extreme high energies the energy density of this vacum must be extremely high. But when energy drops due to some reason I don't know yet a big bang happens all over again rather than saying Quantum fluctuation, I am saying there is a buoyant force that pops all these particles the moment the energy density falls below a threshold. Your lecture on Relativistic energy literally got me Perplexed. You did fantastic job in explaining all this. I got Perplexed because I was thinking massless particles had energy just like you mentioned . But how does something massless have any momentum. Anyway thank you. I am grateful for this video and nice presentation.
I feel yours is one of the few channels with a proper explanation on this topic. One can find many videos on this topic as it's used in many science fiction films. But only a few are precise like that yours.Thanks a lot
Its been three year of this vedio but it is useful for many many student and this lecture will useful for forever .. ❤ and your clear concept is amazing I can't explain in words ..tomorrow is my exam if you have time reply me ..thanku for help
Thank you sir for this beautiful lectures.. appreciate your efforts, you not only provide the concept but also mathematics with intuitive way.. love from nepal... GONNA WAtch yours every video
For simple country folk like me this video climaxes with a link between (special) relativity and quantum mechanics, what the real scientists are looking for in general… I’m touching the tip of a tail of a huge elephant! Thanks for the cool video!
Wowwwww just Wowww!! You getting excited to teach, makes us equally excited to learn. I lovee the energy! Always a fan of your effective science communication🎉
Wow, this is great to break the prejudice about relativistic mass. There is no relativistic mass. It was actually caused by the proper time. Wow, it is so great.
9:11 Sir why don't we consider the proper velocity as dX/d(tau) where dX is not dx(contracted length) it is the proper length measured from the frame of reference of the particle (if we take this then the whole formula will be different. and we will be getting P=(m*v)/(1-v^2/c^2) with no underoot). Please clarify this.
This is really great, thank you for this video. One question I have is, how or why did you initially define the relativistic momentum to be the rest mass times dx/d(tau) ? Why do we define it using the derivative of the proper distance of the observer with respect to the proper time of the moving particle? Am I understanding this correctly? dx is the differential of x for the observer and d(tau) is the differential of time for the moving particle, right? Why do we "mix" the measurements of the different reference frames?
dear sir! I like your videos very much and, it is the 2nd day, I am watching them continuously. 1 thing that I noticed, and you should pay attention to, is that you breathe a bit excitingly during the speech, which raises the blood pressure of listeners like me. (I am 53 years old person). So, If possible, please try to be a little tranquil.
Please make a video on principal of extremal proper time or variational principal of free particle motion also that is also related to special relativity
These lectures are awesome. Thanks for uploading these. So the observer and the particle will disagree on the particle’s momentum, right? Even though they agree on relative velocity? Do I understand correctly? And if I chose a center of mass frame, as a third frame, I would disagree with both, correct?
For better understanding you should make a single lesson of relativity and necessity of using proper time for the particle which is traveling at very high speed. Because understanding why we use proper time instead of observer 's own time. You could catch the idea behind the relativistic momentum relativistic force relativistic velocity relativistic energy and ...... relativistic other things.
Very nice video. I was thinking of an example where in order to give the particle a very high momentum due to high v I would need to provide lots and lots of energy. Let's say the particle was falling into a black hole. The black hole was providing the energy. I was thinking that did this particle finally transition into empty space. Assuming the particle did not disintegrate. It is like it went into nothing. On the reverse maybe these particles pop out of vacuum when their energies drop below a threshold. Like bubble emanating from a fish tank. Perhaps I am talking all nonsense.
sir please make the videos on some topics of mathematical physics like probability , dirac delta function , fourier transformation , group theory , special function....etc and some other topic ... scattering[R.Q.M.] , analog part of electronics....etc......thank you sir ..
Hello sir, why did you only consider dt and not dx in the momentum part? aside from time they also observe different dx. What am I missing? can you please help me understand thank you very much
Reanalyzing this, I have to contradict Dibya. Einstein never applied the first postulate to all of physics. Instead, he said, “The same laws of electrodynamics and optics will be valid for all frames of reference for which the equations of mechanics hold good.” Note two things here. First, he applied it only to “The ... laws of electrodynamics and optics.” This means other laws are not present that do not relate to those two things. Second, he said, “... for which the equations of mechanics hold good.” He left wiggle room for untold mechanics to not “hold good.” Thus, Einstein is not contradicted by anything. His postulate is both narrow and not absolute. Finally, that one’s observation of momentum will be different for their own frame than another does not violate this principle. The fact is, an object without momentum in one’s own frame of reference will look identical to an identical object’s momentumless position in another frame. That such objects have momentum in one frame and not another is irrelevant. Their movement in regard to frames in general remains consistent as demonstrated by the fact that a simple plug-in equation can consistently resolve the difference.
12:40 I'm seriously confused about the fact that first we took dtau for finding momentum(proper) of the particle but the we took dt ,shouldn't force be calculated in terms of the proper time .
This isn't a normal triangle. It's a leg, hyp, leg triangle. And if you divide by the hyp, you get a 1/cosh,1, tanh triangle. And if you multiple them by gamma (making them all relativistic) you get 1, cosh, sinh triangle. But there is no unit circle here. A double angle just gets you closer to pi/4.
12:00 Depp meaning of difference of relativistic momentum and classical momentum is the door 🚪 of understanding special relativity and its relativistic results.
i think relativistic momentum is not ewual to rest mass times proper velocity, rather it is rest mass times distance in s frame divided by time in s prime frame , to make consistence across the frames.
Many FALSE CLAIMS : 1) The "Time dilation" formula does NOT mean that "Time flow at different rate in the two frames". It simply says WHAT frame A SAYS about frame B. And HOW frame A observer SEES observed frame B. NO MORE. You are mallking arbitraraly metaphysical claim 2) E = mc2 is NOT discovered by Einstein in November 1905, but BY HENRI POINCARÉ IN 1900, in his article on Hendrik Lorentz doctorate celebration. Poincaré compares Hertz Theory and Lorentz Theory of Light. And he support Lorentz one, BUT heavily criticise it, for violating the PRINCIPLE OF ACTION REACTION. But in a second article he find how to reconciliate Lorentz Theory with the PRINCIPLE OF ACTION REACTION, by showing that LIGHT MUST NECESSARALY HAVE INERTIA. And his computation gives the INERTIA : m=E/c2. And later in 1904, end finaly in June and July 1905, he ACHIEVE THE THEORY OF RELATIVITY, and APPLY IT TO GRAVITATION, making it relativistic covariant under the Lorentz-Poincaré Group, and predict GRAVITATIONAL WAVES propagating at light speed. 3) Moreover it's Poincaré who understands in 1885, that the ether concept plays NO essential nor technical role in Hertz Theory of EM. And from then advocate that it is OBSOLETE as a physical concept. 4) But there is more, because the prerelativistic frame transformation that Lorentz discover in 1995, were INCORRECT! And it is Poincaré who correct them immediately by giving the mathematical proper proof, based on fundamental Group Theory tools. In particular he deduce from them the invariance of the celerity of Light, confirming Maxwell formula c2.mu0.nu0 =1 that screw c to two other UNIVERSAL CONSTANT. Thus it is a much weaker and bad asumption from Mileva-Einstein to call this INVARIANCE a "postulate". It's NOT. Because it follows from group considerations about space-time isométries letting ds2 = d(ct)2 - dr2 INVARIANT, proved by Poincaré in several occasions : 1898, 1900,1902, 1904, 1905! 5) But there is still more because it's not Einstein who find the physical HEART of Relativity Theory, but Poincaré, who discover since 1898-1902 the relativistic ALGORITHM OF RELATIVELY MOVING CLOCKS SYNCHRONISATION ! See for instance his best seller Book of 1902 "La Science et l'hypothèse" where not only that but the essential parts of Relativity are fully exposed and explained ! And it is furthermore well known, from Einstein close friend Solovine testimony, that Einstein, Mileva, Solovine, Besos, etc. intensively and passionately studied from 1902 to 1905 this Book of Poincaré on Relativity Theory, where Poincaré exposes also THE EXTENDED UNIVERSAL PRINCIPLE OF RELATIVITY aplying to ALL PHYSICS. Poincaré advocated this fundamental Universal Principle (which is the central pillar of Relativity), since 1898-1900. Je exposed it World Wide in his 1902 best seller. Later also at the 1904 international St Louis scientific gathering. And finaly in his 1905 (June and July) final articles where he ACHIEVES THE THEORY OF RELATIVITY ! 6) In his June and July 1905 final articles Poincaré extends the SPACE-TIME QUADRATIC INVARIANCE OF THE LORENTZ-POINCARÉ METRIC ds2 = d(ct)2 - dr2, to the ENERGY-MOMENTUM AND ELECTRIC-MAGNETIC QUADRATIC INVARIANCE. He shows all the formulae of conservation quantities, like E2-B2 (in unit c=1), etc 7) So I'm very sorry to have to tell you that you are totaly mistaken when thinking and saying that Einstein discover the Theory of Relativity. It was done by Lorentz and Poincaré during 20 years from 1885 to 1905. And moreover Einstein-Mileva september 1905 article IS FULL OF HEAVY MISTAKE, as pointes out by Keswami in 3 magistral articles. First Einstein forgets to aknowledge that he takes the CLOCKS SYNCHRONISATION ALGORITHM and the UNIVERSAL PRINCIPLE OF RELATIVITY from Poincaré 1902 Book! Than he makes akwardly a "postulate" of the INVARIANCE OF LIGHT SPEED, which follows in fact from Group Theory as Poincaré showed it since 1898. Then he makes a mess of the "proof" of "Lorentz transformations", finding "strangely" the correct answer with a false reasoning and wrong calculation. He even skip the crucial point in letting without proof of the unitarity of the dilation factor l=1. And last but not least makes total garbage contradictions on "his Principle of light invariance" by asuming in his screwed "proof" that the speed of physical quantities are C-V, later C+V, and finaly sqrt(C2-V2)! 8) Finaly Einstein ignored all his life that the Theory of (Spécial) Relativity APPLIES TO ACCELERATED FRAMES! What Poincaré immediately showed since 1900 by the infinitesimal transformation of the Lie Algebra of the Lorentz Poincaré Group. So not a single point of Relativity can be attributed to Einstein-Mileva. RELATIVITY THEORY is 100% Lorentz and Poincaré (with few minor others : Voigt 1893, Fitzgerald, Abraham) Put your narative straight ! Thanks for POINCARÉ who fully diserves it.
Magnetism arises from Relativity?? ► th-cam.com/video/WwzB1JvsyYc/w-d-xo.html
I'm continually impressed with your communication skills. I never fail to understand the math as you explain it.
so true. he points out key things in the law to help us understand, he doesn't just spits out the laws which is what most of my professors do. thank you and keep it up.
I'm Watching His Video in 2x Speed (because tomorrow is my exam! 😢) Still I Can Understand his Explanation.... He Is Amazing!!! (Bengali People Are Extraordinary!!!) U Just Nailed It Sir...!!! 🤩🥳❤️💓💗💖
Your explanation is amazing sir .
Please bring a series on Quantum Mechanics too .
It would be of great help .
Thank you.
This is more interesting than viewing a movie. I like the clarity of expression and explanation. Thanks for uploading quality educational videos.
I was in the search of this cornerstone lecture ..you made everything as clear as crystal ❤️
I usually don't comment on videos but in this case I have to. Sir you are an incredible teacher, I love how you not only show the math but also explain the meaning behind each equation. This is by far the best explanation I have seen on relativistic momentum and Energy. I am definitely subscribing to your channel!
Top class presentation🙂! Superbly presented and the blackboard/chalk approach somehow renders the perfect pace, for some reason. Much easier to follow through to the end of the lecture than using text/graphics... no idea quite why. But compliments the presentation by this plainly knowledgeable lecturer perfectly IMHO. Look forward to viewing more of your videos! Thank you sir 👍
keep going like this, don't end this some kinds of a fantastic series before discussing four-vectors, minkoswkian metric and proper time, this will be foundation to understand General relativity.
And maybe in future, you can start that series too, and subsequently this channel will become a ultimate undergraduate Physics digital archives
my mind just blew away after hearing "the energy contained in the body by the virtue of its mass at rest". It was so deep. So much respect for you sir.
What a beautiful lecture. Such an amazing teacher. A precise and clear explanation is nowhere found on youtube.
Thank you for helping me pass my physics class. I couldn't have done it without you, Luh you dawg
Wow you explain relativity in such simple terms. Honestly one of the best teachers I've ever seen
By the previous comment I meant is safe to assume with so many particles falling into this black hole with extreme high energies the energy density of this vacum must be extremely high.
But when energy drops due to some reason I don't know yet a big bang happens all over again rather than saying Quantum fluctuation, I am saying there is a buoyant force that pops all these particles the moment the energy density falls below a threshold.
Your lecture on Relativistic energy literally got me
Perplexed. You did fantastic job in explaining all this. I got Perplexed because I was thinking massless particles had energy just like you mentioned . But how does something massless have any momentum.
Anyway thank you. I am grateful for this video and nice presentation.
Very nice to see relativistic momentum defined when my college script gives it seemingly out of the blue
I feel yours is one of the few channels with a proper explanation on this topic. One can find many videos on this topic as it's used in many science fiction films. But only a few are precise like that yours.Thanks a lot
I think this video has topped the list of best physics video on youtube. I'm so happy right now
HOW CAN YOU BE SO GOOD AT EXPLAINING??!!!!
Outstanding teaching ability, King!!
Forever in debt, Sir👑
Thank you very much sir, l am a final year student from Sierra Leone. You made me understand how to derived relativistic KE, may Allah bless you
Its been three year of this vedio but it is useful for many many student and this lecture will useful for forever .. ❤ and your clear concept is amazing I can't explain in words ..tomorrow is my exam if you have time reply me ..thanku for help
Brilliant, beautiful lecture, sir. Thank you for sharing it.
THIS IS AMAZING!!!!!!!!❤❤❤❤❤
Thank you very much for the great explanation. You make it more easier to understand it 😊🙏🏻
Thank you sir for this beautiful lectures.. appreciate your efforts, you not only provide the concept but also mathematics with intuitive way.. love from nepal... GONNA WAtch yours every video
For simple country folk like me this video climaxes with a link between (special) relativity and quantum mechanics, what the real scientists are looking for in general… I’m touching the tip of a tail of a huge elephant! Thanks for the cool video!
Wowwwww just Wowww!!
You getting excited to teach, makes us equally excited to learn.
I lovee the energy! Always a fan of your effective science communication🎉
Wow, this is great to break the prejudice about relativistic mass. There is no relativistic mass. It was actually caused by the proper time. Wow, it is so great.
YOU MADE EVERYTHING CRYSTAL CLEAR. THANK U SO MUCH SIR ❤❤❤
Sir beautiful lecture, this is a piece of art, lots of love and thanks from Pakistan 🇵🇰🇮🇳
You deserve to be the best, really amazing explanation. I am so touched by the last point you explained. Waw waw❤❤❤
Thank you so much! I feel much more ready for my exam now!!!!
Thank you so much, we wish you start a series about general relativity
sir ji . QUANTUM MECHANICS , PHYSICS par bhi lecture deggiye
Kya mast samjhaya aapne, wah! Maja aagya👍
Sir why you have not considered length contraction for calculating relativistic momentum
Such video should be watched by more people interested in physics.
thank you for the amazingly clear explanation
This man is doing Gods work fr
Love the way of teaching
Does it mean that every observers (including the object itself) will measure the same value of relativistic energy of the object?
If you are talking about total energy, then answer is no because kinetic energy will depend on the observer. th-cam.com/video/s879xR52ia0/w-d-xo.html
9:11 Sir why don't we consider the proper velocity as dX/d(tau) where dX is not dx(contracted length) it is the proper length measured from the frame of reference of the particle (if we take this then the whole formula will be different. and we will be getting P=(m*v)/(1-v^2/c^2) with no underoot). Please clarify this.
dX/dtau is always zero because a particle does not move in its own frame of reference.
Make video on energy momentum minkowski space and four vector with full details 🙏
That's A great Lecture 🙂 Thanks Sir 🙏
This is really great, thank you for this video. One question I have is, how or why did you initially define the relativistic momentum to be the rest mass times dx/d(tau) ? Why do we define it using the derivative of the proper distance of the observer with respect to the proper time of the moving particle? Am I understanding this correctly? dx is the differential of x for the observer and d(tau) is the differential of time for the moving particle, right? Why do we "mix" the measurements of the different reference frames?
wonderfull class, sir. thank you
dear sir! I like your videos very much and, it is the 2nd day, I am watching them continuously. 1 thing that I noticed, and you should pay attention to, is that you breathe a bit excitingly during the speech, which raises the blood pressure of listeners like me. (I am 53 years old person). So, If possible, please try to be a little tranquil.
We need your help.
Kindly
Prepare a vadeo about hydrogen wave function
Really really an amazing quotient of knowledge in you 👍👍
Very helpful video. Love from Pakistan!
Please make a video on principal of extremal proper time or variational principal of free particle motion also that is also related to special relativity
These lectures are awesome. Thanks for uploading these.
So the observer and the particle will disagree on the particle’s momentum, right? Even though they agree on relative velocity? Do I understand correctly? And if I chose a center of mass frame, as a third frame, I would disagree with both, correct?
For better understanding
you should make a single
lesson of relativity and necessity of using proper time for the particle which is traveling at very high speed.
Because understanding why we use proper time instead of observer 's own time.
You could catch the idea behind the relativistic momentum
relativistic force
relativistic velocity
relativistic energy
and ......
relativistic other things.
This deserves million views
Thank you very much
Can we have a series on relativistic electrodynamics
You are really very good!!!
At time 8:40, why the " dx " will be same for both the observer and the particle system ...please answer ...
exactly this, i don't get why the proper time is taken into account but not the proper distance
fantastic lecture
sir please put a lecture on population inversion and pumping in Lasers
At 8:22, why did you not also include the effect of length contraction on dx? Thank you.
Sir you are great. Can you tell me where I can find exercises and their solutions
Thank a lot sir 🤠
Excellent work
It was really great and energetic! Thanks a lot.
Very nice video. I was thinking of an example where in order to give the particle a very high momentum due to high v I would need to provide lots and lots of energy. Let's say the particle was falling into a black hole. The black hole was providing the energy. I was thinking that did this particle finally transition into empty space. Assuming the particle did not disintegrate.
It is like it went into nothing. On the reverse maybe these particles pop out of vacuum when their energies drop below a threshold. Like bubble emanating from a fish tank.
Perhaps I am talking all nonsense.
Thank you
sir please make the videos on some topics of mathematical physics like probability , dirac delta function , fourier transformation , group theory , special function....etc and some other topic ... scattering[R.Q.M.] , analog part of electronics....etc......thank you sir ..
Pls continue this series relativistic quantum mechanics or relativistic electrodynamics
Hello sir, why did you only consider dt and not dx in the momentum part? aside from time they also observe different dx. What am I missing? can you please help me understand thank you very much
Truly Amazing.
Amazing and very clear
Sir what is Kinetic energy of photon??????
Nice video
Actually very good
Very very fascinating....
Reanalyzing this, I have to contradict Dibya. Einstein never applied the first postulate to all of physics. Instead, he said, “The same laws of electrodynamics and optics will be valid for all frames of reference for which the equations of mechanics hold good.”
Note two things here. First, he applied it only to “The ... laws of electrodynamics and optics.” This means other laws are not present that do not relate to those two things.
Second, he said, “... for which the equations of mechanics hold good.” He left wiggle room for untold mechanics to not “hold good.”
Thus, Einstein is not contradicted by anything. His postulate is both narrow and not absolute.
Finally, that one’s observation of momentum will be different for their own frame than another does not violate this principle. The fact is, an object without momentum in one’s own frame of reference will look identical to an identical object’s momentumless position in another frame. That such objects have momentum in one frame and not another is irrelevant. Their movement in regard to frames in general remains consistent as demonstrated by the fact that a simple plug-in equation can consistently resolve the difference.
Make more physics computation and explanation 🙏
Wow.. Excellent video!!!!!
Excellent Explanation!
12:40 I'm seriously confused about the fact that first we took dtau for finding momentum(proper) of the particle but the we took dt ,shouldn't force be calculated in terms of the proper time .
Sir does the distance for the partical and for the observer is same
And it not be contracted or extended
excellently done!
Sir please make the video on solid state physics
Amazing explanation sir 🙏
This isn't a normal triangle. It's a leg, hyp, leg triangle. And if you divide by the hyp, you get a 1/cosh,1, tanh triangle. And if you multiple them by gamma (making them all relativistic) you get 1, cosh, sinh triangle. But there is no unit circle here. A double angle just gets you closer to pi/4.
12:00
Depp meaning of difference of relativistic momentum and classical momentum is the door 🚪 of understanding special relativity and its relativistic results.
Sir, are the mass-energy relation E=m*c^2 and momentum-energy-mass relation true for only free particle or true for bound particle as well?
my physics was totally fucked when, i seen your videos.
thynx a lot sir
Sir start Quantum mechanics lecture series from the scratch please.
Excellent Sir
i think relativistic momentum is not ewual to rest mass times proper velocity, rather it is rest mass times distance in s frame divided by time in s prime frame , to make consistence across the frames.
Many FALSE CLAIMS :
1) The "Time dilation" formula does NOT mean that "Time flow at different rate in the two frames". It simply says WHAT frame A SAYS about frame B. And HOW frame A observer SEES observed frame B. NO MORE. You are mallking arbitraraly metaphysical claim
2) E = mc2 is NOT discovered by Einstein in November 1905, but BY HENRI POINCARÉ IN 1900, in his article on Hendrik Lorentz doctorate celebration. Poincaré compares Hertz Theory and Lorentz Theory of Light. And he support Lorentz one, BUT heavily criticise it, for violating the PRINCIPLE OF ACTION REACTION. But in a second article he find how to reconciliate Lorentz Theory with the PRINCIPLE OF ACTION REACTION, by showing that LIGHT MUST NECESSARALY HAVE INERTIA. And his computation gives the INERTIA : m=E/c2. And later in 1904, end finaly in June and July 1905, he ACHIEVE THE THEORY OF RELATIVITY, and APPLY IT TO GRAVITATION, making it relativistic covariant under the Lorentz-Poincaré Group, and predict GRAVITATIONAL WAVES propagating at light speed.
3) Moreover it's Poincaré who understands in 1885, that the ether concept plays NO essential nor technical role in Hertz Theory of EM. And from then advocate that it is OBSOLETE as a physical concept.
4) But there is more, because the prerelativistic frame transformation that Lorentz discover in 1995, were INCORRECT! And it is Poincaré who correct them immediately by giving the mathematical proper proof, based on fundamental Group Theory tools. In particular he deduce from them the invariance of the celerity of Light, confirming Maxwell formula c2.mu0.nu0 =1 that screw c to two other UNIVERSAL CONSTANT. Thus it is a much weaker and bad asumption from Mileva-Einstein to call this INVARIANCE a "postulate". It's NOT. Because it follows from group considerations about space-time isométries letting ds2 = d(ct)2 - dr2 INVARIANT, proved by Poincaré in several occasions : 1898, 1900,1902, 1904, 1905!
5) But there is still more because it's not Einstein who find the physical HEART of Relativity Theory, but Poincaré, who discover since 1898-1902 the relativistic ALGORITHM OF RELATIVELY MOVING CLOCKS SYNCHRONISATION ! See for instance his best seller Book of 1902 "La Science et l'hypothèse" where not only that but the essential parts of Relativity are fully exposed and explained ! And it is furthermore well known, from Einstein close friend Solovine testimony, that Einstein, Mileva, Solovine, Besos, etc. intensively and passionately studied from 1902 to 1905 this Book of Poincaré on Relativity Theory, where Poincaré exposes also THE EXTENDED UNIVERSAL PRINCIPLE OF RELATIVITY aplying to ALL PHYSICS. Poincaré advocated this fundamental Universal Principle (which is the central pillar of Relativity), since 1898-1900. Je exposed it World Wide in his 1902 best seller. Later also at the 1904 international St Louis scientific gathering. And finaly in his 1905 (June and July) final articles where he ACHIEVES THE THEORY OF RELATIVITY !
6) In his June and July 1905 final articles Poincaré extends the SPACE-TIME QUADRATIC INVARIANCE OF THE LORENTZ-POINCARÉ METRIC ds2 = d(ct)2 - dr2, to the ENERGY-MOMENTUM AND ELECTRIC-MAGNETIC QUADRATIC INVARIANCE. He shows all the formulae of conservation quantities, like E2-B2 (in unit c=1), etc
7) So I'm very sorry to have to tell you that you are totaly mistaken when thinking and saying that Einstein discover the Theory of Relativity. It was done by Lorentz and Poincaré during 20 years from 1885 to 1905. And moreover Einstein-Mileva september 1905 article IS FULL OF HEAVY MISTAKE, as pointes out by Keswami in 3 magistral articles.
First Einstein forgets to aknowledge that he takes the CLOCKS SYNCHRONISATION ALGORITHM and the UNIVERSAL PRINCIPLE OF RELATIVITY from Poincaré 1902 Book! Than he makes akwardly a "postulate" of the INVARIANCE OF LIGHT SPEED, which follows in fact from Group Theory as Poincaré showed it since 1898. Then he makes a mess of the "proof" of "Lorentz transformations", finding "strangely" the correct answer with a false reasoning and wrong calculation. He even skip the crucial point in letting without proof of the unitarity of the dilation factor l=1. And last but not least makes total garbage contradictions on "his Principle of light invariance" by asuming in his screwed "proof" that the speed of physical quantities are C-V, later C+V, and finaly sqrt(C2-V2)!
8) Finaly Einstein ignored all his life that the Theory of (Spécial) Relativity APPLIES TO ACCELERATED FRAMES! What Poincaré immediately showed since 1900 by the infinitesimal transformation of the Lie Algebra of the Lorentz Poincaré Group.
So not a single point of Relativity can be attributed to Einstein-Mileva. RELATIVITY THEORY is 100% Lorentz and Poincaré (with few minor others : Voigt 1893, Fitzgerald, Abraham)
Put your narative straight ! Thanks for POINCARÉ who fully diserves it.
Force in relativistic mechanics eqn is available in it ????
Thanks sir 😊🙏🙏
Bravo!!!
As good as it gets!!
Sir in the massless particle case
The momentum of the massless particle must be 0 since momentum = gamma × rest mass × velocity
So how E = pc ?????
Momentum becomes 0/0 for massless particles, so can't use that expression.
@@FortheLoveofPhysics but for photons it's working as photon's momentum doesn't depend on mass
Photons having zero rest mass then how it has relativistic mass.. Plzz explain sir...
A photon has relativistic mass due to its kinetic energy. th-cam.com/video/s879xR52ia0/w-d-xo.html
Superb 👍👌
Sir Quantum Mechanics par ek lecture series banaiye plz
Well explanations lecture