MICROWAVE :- These are a form of electromagnetic radiation with wavelengths ranging from as long as one meter to as short as one millimeter, which is equal to the frequencies between 300 MHz (0.3 GHz) and 300 GHz. This definition includes both UHF and EHF both are millimeter waves, and various sources use different boundaries. In every case, microwave includes the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum, with RF engineering often putting the lower boundary at 1 GHz (30 cm), and the upper around 100 GHz (3 mm).The prefix "micro-" in "microwave" is not meant to suggest a wavelength in the micrometer range. It indicates that microwaves are "small" compared to waves used in typical radio broadcasting, in that they have shorter wavelengths. The boundaries between far infrared light, terahertz radiation, microwaves, and ultra-high-frequency radio waves are arbitrary and are used variously between different fields of study.
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