The radioactive decay of nickel-56 through cobalt-56 to iron-56 produces high-energy photons which dominate the energy output of the ejecta at intermediate to late times.

What makes a light source produce photons?

Combustion offers another way to produce photons.

In fact, every distinct type of polarization will produce photons that give a unique set of answers to these three questions.

I have a question - how would I get H2O to produce photons, if I can?

This will cause it to produce infrared (IR) photons.

This time, the sensors, modified versions of devices normally used in fiber optic networks, showed that the device was producing single photons.

They produce photons of energy in negative energy states.

There are many different ways to produce photons, but all of them use the same mechanism inside an atom to do it.

Alternatively, it is possible to produce photons and other light particles, but they will emerge with higher energies.