Thursday, September 27, 2007

102 years of E=mc²

Exactly 102 years ago, on September 27th, 1905, Einstein published his paper
Does the inertia of a body depend upon its energy-content?
that introduced the well-known formula, E=mc². More precisely, you can see if you click that the formula doesn't appear in this or similar form. The closest thing that you find there is this sentence:
If a body gives off the energy L in the form of radiation, its mass diminishes by L/c²
The form "E=mc²" of his insight is a matter of marketing but it is a good marketing. However, it is good that the people who invented this marketing trick didn't present themselves as co-authors. ;-)

Can Einstein be blamed for Hiroshima and Nagasaki? Well, a little bit. Look at this provocative sentence ;-) in his article:
It is not impossible that with bodies whose energy-content is variable to a high degree (e.g. with radium salts) the theory may be successfully put to the test.

1 comment:

  1. Today global warming news is very danger news for earth life. Now this global warming issues takes big picture for this world. Now we are aware about this issue.