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  • 4 votes cast
Mar
19
awarded  Good Question
Feb
23
accepted Where does the energy lost due to light emission come from?
Feb
22
comment Where does the energy lost due to light emission come from?
If we have two atoms of the same element, but one of them has an electron in a higher orbit, would the gravitational field of each atom be exactly the same? or would one of them be stronger?
Feb
20
awarded  Critic
Feb
20
comment Where does the energy lost due to light emission come from?
Is that what happens when electrons jump into a lower orbit? They emit a photon as a consequence of that leap?
Feb
18
comment Where does the energy lost due to light emission come from?
Ok, so basically, there's more than one concept of mass. And the kind of mass you measure in a weighing machine is not affected at all when an object emits light. Is that it?
Feb
18
comment Where does the energy lost due to light emission come from?
You lost me on that last statement. You say that a full battery is slightly heavier but that its "rest mass" doesn't change? In what way the full battery is heavier then?
Feb
18
comment Where does the energy lost due to light emission come from?
I see. I remember long time ago I heard somebody explaining Einstein's E=m*c^2 as an actual mass loss when an object emits light.
Feb
18
comment Where does the energy lost due to light emission come from?
@ACuriousMind, you are kind of answering the question but in form of comments. It would be better if you did it as an actual answer.
Feb
18
revised Where does the energy lost due to light emission come from?
added 156 characters in body; edited title
Feb
18
comment Where does the energy lost due to light emission come from?
@ACuriousMind, I'll rephrase the question.
Feb
18
comment Where does the energy lost due to light emission come from?
@ACuriousMind, if I had an infrared camera, I'm sure I'll see plenty of them.
Feb
18
comment Where does the energy lost due to light emission come from?
@ACuriousMind, what about regular objects which are not being supplied with external energy? Like a pencil or a piece of paper.
Feb
18
revised Where does the energy lost due to light emission come from?
added 5 characters in body
Feb
18
revised Where does the energy lost due to light emission come from?
added 85 characters in body
Feb
18
comment Where does the energy lost due to light emission come from?
@ACuriousMind, why would it lose mass? It's my understanding that the light being radiated by an object must come from its mass. Does it not?
Feb
18
asked Where does the energy lost due to light emission come from?
Dec
28
accepted The speed limit is with respect to what?
Dec
28
comment Why is quantum entanglement considered to be an active link between particles?
@LuboŇ°Motl, the last "it" in my previous comment refered to quantum entanglement, not quantum mechanics. I understand that QM is a self-contained theory, it doesn't need another theory to make sense of it.
Dec
25
comment Why is quantum entanglement considered to be an active link between particles?
@LuboŇ°Motl, what I don't understand from your answer is why Einstein called this "spooky action at a distance". Is it that Quantum Mechanics wasn't a complete science back then so there was no theory to explain it yet?