Max Demian wrote:
"Kennedy McEwen" wrote in message
...
In article , Max Demian
writes
"J G Miller" wrote in message
news On Wed, 16 Sep 2009 13:28:53 +0100, Steve Thackery wrote:

Energy is neither created nor destroyed
Only according to classical physics.

Nope, it is also an axiom in modern physics: E=mc^2

That states that energy can be destroyed by converting it to mass, and
created by converting mass into energy.


Rather it states that mass is actually an expression of energy.

Classical physics regards mass and energy to be separately conserved.


Which, neglecting nuclear reactions, is a good enough approximation.