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A comment on Scientists create matter from pure light, proving the Breit-Wheeler effect. Parent comment

Re:Scientists create matter from pure light, proving the Bre... by api on Tuesday September 14, 2021 @07:48PM (#28533150)
I’ve always understood photons as being “stuff” in it’s all energy no mass state.

What is “stuff” as all matter no energy?

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Re:Scientists create matter from pure light, proving the Bre... by BizarroLand on Wednesday September 15, 2021 @12:20PM (#28541031)
Probably any matter at absolute 0 would qualify? I think otherwise all mass has some excess of energy in it, I could be wrong.

Alternatively, possibly dark matter would qualify, although I am not sure either as we haven't even proven that it exists.

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Re:Scientists create matter from pure light, proving the Bre... by BizarroLand on Wednesday September 15, 2021 @07:25PM (#28545783)
Wait, no, I was wrong. Matter and Energy are the same thing. Only nothing has no energy or matter.
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