| Region |
Approx Range (meters/hertz) |
Specific Range |
Radio Waves
 |
104 - 10-2 m/104 -
1010 Hz |
|
| ultra-low frequency (ULF) |
3 - 30 Hz |
| extremely low frequency (ELF) |
30 - 300 Hz |
| voice frequencies (VF) |
300 Hz - 3 kHz |
| very low frequency (VLF) |
3 - 30 kHz |
| low frequency (LF) |
30 - 300 kHz |
| medium frequency (MF) |
300 kHz - 3 MHz |
| high frequency (HF) |
3 - 30 MHz |
| very high frequency (VHF) |
30 - 300 MHz |
| ultra high frequency (UHF) |
300 MHz - 3 GHz |
| super high frequency (SHF) |
3 - 30 GHz |
| extremely high frequency (EHF) |
30 - 300 GHz |
| shortwave |
see MF, HF |
| television |
see VHF, UHF |
| microwave |
30 cm - 1 mm/1-300 GHz |
Infrared
 |
10-3 - 10-6 m/1011 -
1014 Hz |
|
| far |
1000-30 um |
| middle |
30-3 um |
| near |
3-0.75 um |
Visible
 |
5x10-7 m/2x1014 Hz |
|
| red |
770-622 nm |
| orange |
622-597 nm |
| yellow |
597-577 nm |
| green |
577-492 nm |
| blue |
492-455 nm |
| violet |
455-390 nm |
Ultraviolet
 |
10-7 - 10-8 m/1015 -
1016 Hz |
|
| UV-A (least harmful) |
400-315 nm |
| UV-B (more harmful, absorbed by ozone) |
315-280 nm |
| UV-C (most harmful, but all absorbed by air) |
280-100 nm |
| near UV ("black light") |
400-300 nm |
| far UV |
300-200 nm |
| vacuum UV |
200-100 nm |
X ray  |
10-9 - 10-11 m/1017 -
1019 Hz |
|
Gamma ray  |
10-11 - 10-13 m/1019 -
1021 Hz |
|
