(notes taken from the CGP revision guides)
- There are seven types of electromagnetic (EM) waves.
- Light is just one type of EM radiation. EM radiation occurs at many different wavelengths.
- There is a continuous spectrum of different wavelengths, but waves with similar wavelengths tend to have similar properties. Electromagnetic radiation is normally split in to 7 different types of waves:
Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays,
(from left to right is increasing frequency)
(from right to left is increasing wavelength)
- All types of electromagnetic radiation travel at exactly the same speed through space, which is a vacuum. This speed is very fast.
- This means that waves with a shorter wavelength have a…