How Do You Calculate the Number of Photons in Light?

Join the discussion

Registration is free. Start your own thread to ask a follow-up.

2 replies · 4K views

okwatia

i want to know how to calculate the number of photons in light

Physics news on Phys.org

Discussion

berkeman

Admin

Use the fact that the energy per photon is E = hf, and use the total energy in the light to calculate how many photons are making up that energy.

okwatia

Please can you tell me the formula for the total energy in light