Fission and fusion can convert mass to energy, what is the mechanism for converting energy to mass?

Question

Has it been observed? Is it just theoretical? Is it one of those simple-but-profound things?

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In: 3715

Answer 1

Pair production! It’s been a while, but if I remember correctly, it’s when a high-energy gamma particle passes by a nucleus, splitting the gamma into an electron and a positron.