## 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.

#### snail feedback (1) :

reader TOM DISOUZA said...

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.