Some definitions.
Wavelength: Distance between wave crests. (?)
Frequency: Number of wave crests that pass per second. (?)
speed=wavelength x frequency ( c=?? )
Energy of a photon is proportional to frequency.
- E=h?=hc/?
- This energy can be transferred to a charged particle
Photons have momentum.
- Momentum = E/c
- This momentum is also transferred when energy is transferred. (Light can make things move).