johnc Posted September 27, 2005 Share Posted September 27, 2005 Today is the 100th anniversary of the publication of Einstien's famouse equation E=mc2. But, that's not the actual equation he published. For the physics afficianados on this board: 1. What was the original equation published? 2. How do you get E=mc2 from the original equation? Quote Link to comment Share on other sites More sharing options...
BrandonsZ Posted September 27, 2005 Share Posted September 27, 2005 Today is the 100th anniversary of the publication of Einstien's famouse equation E=mc2. But' date=' that's not the actual equation he published. For the physics afficianados on this board: 1. What was the original equation published? 2. How do you get E=mc2 from the original equation?[/quote'] Gasoline=Mileage*Cash^2 So true, even today. Motivation=Nagging*Complaining^2 Quote Link to comment Share on other sites More sharing options...
strotter Posted September 28, 2005 Share Posted September 28, 2005 The E=mc^2 form is for when the object/particle is at rest; the more general form is E^2 = p^2*c^2 + (m*c^2)^2 (the "energy-momentum relation) for arbitrary velocity. The definition of "total energy" is E = rho*m*c^2 = K + m*c^2. The first is the one that really shows mass as energy (and versa-visa). The "energy-mass equivalence" form is E = (m*c^2)/?(1-(u^2/c^2)). Is that the one you're talking about? Quote Link to comment Share on other sites More sharing options...
Confused Posted September 28, 2005 Share Posted September 28, 2005 Uhh... I think I just had a stroke from reading that.. Quote Link to comment Share on other sites More sharing options...
PUSHER Posted September 28, 2005 Share Posted September 28, 2005 Ahhh relativity, he should of just kept all his findings in a box marked "dont open untill you can go the speed of light." Twin paradox theory is also a mind blower, Einstein didnt really come up with that I guess, so I cant hate on him for that. Anyways, happy bday e=mc^2 and thanks for giving me something to major in I guess. Quote Link to comment Share on other sites More sharing options...
Heavy Z Posted September 28, 2005 Share Posted September 28, 2005 Today is the 100th anniversary of the publication of Einstien's famouse equation E=mc2. E=mc2 looks to have been first published by De Pretto in 1903. Einstein did take it up a notch in 1905 by introducing relativity: http://www.guardian.co.uk/international/story/0,3604,253524,00.html Quote Link to comment Share on other sites More sharing options...
nullbound Posted September 28, 2005 Share Posted September 28, 2005 (e1p1)^2 + (e2p2)^2 + (e3p3)^2 = mc^2 Quote Link to comment Share on other sites More sharing options...
johnc Posted September 28, 2005 Author Share Posted September 28, 2005 http://www.phy.anl.gov/limits04/Abstracts/Sharma_abst.pdf Einstein wrote "mass diminishes by L/c^2", where L is used instead of E to represent energy, and if you multiply both sides by c^2 you get the formula we're familiar with. And yes, Einstein's Generalized Mas-Energy Equation is a derivation of previous work. Quote Link to comment Share on other sites More sharing options...
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