The EM spectrum (Hess & McKnight, 2014). Bands arranged by wavelength, shortest to longest:
| Band | Wavelength |
|---|---|
| Cosmic rays | < 0.00001 µm |
| Gamma rays | ~ 0.0001 µm |
| X-rays | ~ 0.001 – 0.01 µm |
| Ultraviolet | ~ 0.01 – 0.4 µm |
| Visible | 0.4 – 0.7 µm |
| Infrared | 0.7 – 1000 µm |
| Microwaves | 1 mm – 1 m |
| TV / FM radio | ~ 1 m |
| AM radio | ~ 100 m |
| Long radio waves | > 1 000 m |