Photon:A photon is a particle representing a quantum of light or other electromagnetic radiation. It carries energy proportional to the radiation frequency but has zero rest mass.
Wavelength:Wavelength refers to the distance between one peak or crest of a wave and the next peak or crest. It's typically measured in meters.
Frequency:Frequency is the number of complete wave cycles per second, measured in hertz (Hz). In terms of electromagnetic energy, it determines color for visible light and energy level for photons.