Question

what is meant by mass energy relation??

Answer 1

Yes, simply speakingit is just an equivalence relationship between energy and mass, however, it has a truly deep implications.For example, knowingthat, the total change in mass, dose not fit to total issued energyin beta decay, gave Pauly a hint to theorize a new particle called neutrino.It alowed Dirac to construct his equation and predict existence of antimatter.It allowed us to discover the existence of dark matter, also by by noticing that galaxiesmass, and energy dose not fit in this equation!And many more...Of course all those discovers was not made only by this equation, but it played a vital roule, but it hard to explain how exactly it done inlayman words.And finally, I will mention that currentlythis equation is built in very deeply in modern physics.

Answer 2

an equation for the interconversion ofmass and energy: E = MC2 where E isenergy in ergs, M is mass in grams, and C is the velocity of light in centimeters per second — called also Einstein equation; compare conservation of energy, conservation of mass.