Frequency of all electromagnetic spectrum classes
Electromagnetic radiation can be classified according to the frequency of the wave, in ascending order, in the following ranges: radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma radiation. The next table shows the range of frequencies of electromagnetic radiation.
# | S | Class | ||
|---|---|---|---|---|
| 1 | γ | Gamma rays | 30 EHz | 300 EHz |
| 2 | HX | Hard X-rays | 3 EHz | 30 EHz |
| 3 | SX | Soft X-rays | 300 PHz | 3 EHz |
| 4 | SX | Soft X-rays | 30 PHz | 300 PHz |
| 5 | EUV | Extreme ultraviolet | 3 PHz | 30 PHz |
| 6 | NUV | Near ultraviolet / visible | 300 THz | 3 PHz |
| 7 | NIR | Near infrared | 30 THz | 300 THz |
| 8 | MIR | Mid infrared | 3 THz | 30 THz |
| 9 | FIR | Far infrared | 300 GHz | 3 THz |
| 10 | EHF | Extremely high frequency | 30 GHz | 300 GHz |
| 11 | SHF | Super high frequency | 3 GHz | 30 GHz |
| 12 | UHF | Ultra high frequency | 300 MHz | 3 GHz |
| 13 | VHF | Very high frequency | 30 MHz | 300 MHz |
| 14 | HF | High frequency | 3 MHz | 30 MHz |
| 15 | MF | Medium frequency | 300 kHz | 3 MHz |
| 16 | LF | Low frequency | 30 kHz | 300 kHz |
| 17 | VLF | Very low frequency | 3 kHz | 30 kHz |
| 18 | ULF | Ultra low frequency | 300 Hz | 3 kHz |
| 19 | SLF | Super low frequency | 30 Hz | 300 Hz |
| 20 | ELF | Extremely low frequency | 3 Hz | 30 Hz |
