Indicative bands of the electromagnetic spectrum |
| BAND | WAVELENGTH | FREQUENCY | |
|---|---|---|---|
| LF low frequency | 10000m - 1000m | 30-300 kHz | |
| MF medium frequency | 1000m - 100m | 300-3000 kHz | |
| HF high frequency (SW) | 100m - 10m | 3-30 MHz | |
| Radio - TV | |||
| FM | 2.5-3.5 m | 87-108 MHz | |
| VHF-UHF-SAT | 20 cm - 2.5 m | 120 MHz - 1.5 GHz | |
| Microwave | 0.01-20 cm | 1.5-3000 GHz | |
| SAT | 1.5-300 GHz | ||
| EHF extremely high frequency | 30-300 GHz | ||
| Far Infrared | 20,000-100,000 nm | 3000 -15000 GHz | |
| Near Infrared | 700-20,000 nm | 15000 - 430,000 GHz | |
| Visible | 400-700 nm | 430,000 -750,000 GHz | |
| Red | 620-760 nm | ||
| Orange | 570-620 nm | ||
| Yellow | 550-570 nm | ||
| Green | 470-550 nm | ||
| Blue | 440-470 nm | ||
| Violet | 380-440 nm | ||
| Ultraviolet | 4-400 nm | ||
| Soft XRay | 1-20 nm | ||
| Hard XRay | 0.1-1 nm | ||
| Gamma Ray | |||
1m =109 nm | 1nm =10-9 m Wavelength of visible light: 400 nm - 700 nm (or 4000 Å - 7000 Å ≈ 4 ×10-7 - 7 ×10-7 m ) Length unit of Angstrom Å = 0,1nm = 1×10-10 m | micron μ = 1×10−6 m
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