When it comes near a heavy nucleus, a gamma ray, which is a high ...

[asd123]

When it comes near a heavy nucleus, a gamma ray, which is a high energy photon, can disappear, and in its place there will be produced an electron and a positron, which both have mass. According to special relativity, this pair production is an example of __________.
 Fill in the blank(s) with correct word

Question 2

An electron and a positron, which are two massive particles, can annihilate when they come together to produce two photons, which have no mass. According to special relativity, this pair annihilation is an example of __________.
 Fill in the blank(s) with correct word

[atrochim]

Answer to Question 1

the equivalence of mass and energy

Answer to Question 2

the equivalence of mass and energy

[asd123]

Excellent

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Gracias!