I know matter can not be created or destroyed - what about energy?
2007-03-13 03:51:30 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Thanks - That is what I thought - I just wanted to make sure before I started running my mouth. Good looking out!
2007-03-13 04:01:24 · update #1
Energy is conserved only if there's a metric spacetime and there's time symmetry, which pretty much describes just about everything that we see today. However, that does not mean energy is ALWAYS conserved, it can indeed be "created out of nothing". As an example, in quantum field theory, virtual particles routinely appear in and out of existence, along with it spontanenous energy "out of nothing", within the limits of the Heisenberg Uncertainity relation. In physics-vernacular, such energy is "borrowed" from "nothing" for a short time and returned.
2007-03-13 04:35:22 · answer #1 · answered by Scythian1950 7 · 0⤊ 0⤋
Energy cannot be created or destroyed. It's a law of physics.
2007-03-13 03:58:33 · answer #2 · answered by iceman30906 4 · 0⤊ 0⤋
E = mc^2 says that matter and energy are equivalent (or at least convertable). If you could create or destroy one you could create or destroy the other. You can do neither to either.
2007-03-13 03:55:19 · answer #3 · answered by indiana_jones_andthelastcrusade 3 · 0⤊ 0⤋
Energy and matter are the same in the sense that one can be converted into the other through Einstein's equation E = mc^2
2007-03-13 03:55:05 · answer #4 · answered by physicist 4 · 0⤊ 0⤋
energy can't be created or destroyed,
it just transforms from one to other forms of energy
2007-03-13 04:09:41 · answer #5 · answered by Ana C 3 · 0⤊ 0⤋