4 ms·
So... you're saying E=mc^2 is false? Huh, who woulda thunk it.
by zonidjan 7y ago
So... you're saying E=mc^2 is false? Huh, who woulda thunk it.
- gpderetta 7y agoIANAP, but as far as I know it is true only if m is the relativistic mass which apparently is an obsolete and confusing concept which is not taught anymore (according to Wikipedia Einstein himself disliked it). Otherwise the formula only holds at rest.
- semajian 7y agoYes, well said.
- antonvs 7y agoIt's a simplified equation which only fully applies in the case where momentum is zero. The full equation[1] is: E^2 = (pc)^2 + (m0 c^2)^2 ...where p is momentum, and m0 is rest mass (mass in the rest frame of the object.) [1] https://en.wikipedia.org/wiki/Mass%E2%80%93energy_equivalence#Applicability_of_the_strict_formula https://en.wikipedia.org/wiki/Mass%E2%80%93energy_equivalenc...