It takes energy to create those little EM waves, right? A photon is a little packet of that energy. The exact amount of energy a photon has is determined by the wavelength of the light, with the relationship being a result of all the math behind light propagation and electromagnetism (thank Maxwell and his equations)
1ndiana_Pwns t1_j8ltc70 wrote
Reply to comment by wooly_boy in When measuring the wavelength of EM radiation... what's actually being measured? by Grand-Tension8668
It takes energy to create those little EM waves, right? A photon is a little packet of that energy. The exact amount of energy a photon has is determined by the wavelength of the light, with the relationship being a result of all the math behind light propagation and electromagnetism (thank Maxwell and his equations)