Question

Everybody knows e=mc2 But what are the units? Is e in ergs, btu, horsepower, etc. Is m in gms, tons, lbs, etc? Is c in km/sec, mph, inches/day, etc?

Asked by: Donald Hobbs

Answer

All the parameters are in SI units. e.g: e (in Joules), m (Kilograms) and c (meters/second). However you can convert into your favourite units, taking into account the proper relations in between.

Answered by: Buddhadev Mukherjee, Research Scholar,Nuclear Science Center, India

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'One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day.'

Albert Einstein
(1879-1955)