I have read that when an electron drops an energy level a photon is given off.

Are there any other conditions were a photon is produced?

Any other Particle?

I'm going to search. I'm just hoping for a shortcut. A point in the right direction.

Edited November 1, 20187 yr by jajrussel
The universe uses this so called smart phone to punish me

Gamma rays from radioactivity.

Acceleration of a charged particle, nuclear particles dropping to a lower energy level.

Thank you...

Thermal radiation (aka "black-body radiation")

https://en.wikipedia.org/wiki/Thermal_radiation

https://en.wikipedia.org/wiki/Black-body_radiation

 

Quote

Are there any other conditions were a photon is produced?

 

Annihilation of matter-antimatter.

https://en.wikipedia.org/wiki/Annihilation

e.g. annihilation of electron-positron:

[math]e^- + e^+ \rightarrow \gamma + \gamma + 1.022 MeV[/math]

 

Decay of unstable particles like e.g. neutral pion meson.

https://en.wikipedia.org/wiki/Pion

[math]\pi^0 \rightarrow \gamma + \gamma + 135 MeV[/math]