The Electromagnetic Spectrum
From the radio to gamma rays
- low energy to high energy
- low frequency to high frequency
- long wavelength to short wavelength
Visible light is just a tiny fraction.
- ROY G. BIV (red orange yellow green blue indigo violet in order low energy to high)
- Wavelengths from 0.0004 millimeters to 0.0007 millimeters. Usually use nm (10-9 m or Å 10-10 m)
All travel at speed of light in vacuum.