If photons have no mass, how they create electrons and positrons on colliding?
92532
Conservation of Mass during Electron - Positron Annihilation
62883
Positrons versus holes as positive charge carriers
90122
Is there experimental evidence that massless particles such as photons attract massive objects?
114593
Physics of simple collisions
18171
Why do electrons occupy the space around nuclei, and not collide with them?
15767
Can a free particle absorb/emit photons?
45283
Why don't virtual particles violate conservation of mass/energy?
55085
How come a photon acts like it has mass in a superconducting field?
155146
Ejected Electrons with 0 KE?
60149
Can photons be detected without being absorbed?
53259
Do photons have mass?
119217
If particles are points, then aren't atoms empty space?
95125
Rest mass of the photon
41466
Can the photoelectric effect be explained without photons?
72287
How does gamma-gamma pair production really work?
60287
The exchange of photons gives rise to the electromagnetic force
66987
Positron-electron annihilation - can more than two photons be created?