Microwave
Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves but longer than infrared waves.
- Frequencies between 300 MHz and 300 GHz
Electromagnetic Spectrum
The electromagnetic (EM) spectrum is the range of all types of electromagnetic radiation, ordered by wavelength or frequency.
Summary Table
| Type of Radiation | Wavelength Range (approx.) | Frequency Range (approx.) | Notes |
|---|---|---|---|
| Radio Waves | > 1 m | < 300 MHz | Broadcasting, WiFi, communication |
| Microwaves | 1 m – 1 mm | 300 MHz – 300 GHz | Radar, microwaves, satellites |
| Infrared (IR) | 1 mm – 700 nm | 300 GHz – 430 THz | Heat radiation, remote controls |
| Visible Light | 700–400 nm | 430–750 THz | The part humans can see |
| Ultraviolet (UV) | 400–10 nm | 750 THz – 30 PHz | Causes sunburn; sterilization |
| X-rays | 10–0.01 nm | 30 PHz – 30 EHz | Medical imaging |
| Gamma Rays | < 0.01 nm | > 30 EHz | Nuclear reactions, cosmic sources |