-- A 'microwave oven' operates at 2.450 GHz, corresponding to a wavelength of 12.24 cm.
Microwaves are electromagnetic waves with a frequency of about 2.45 GHz and a wavelength of about 12.2 cm; in the electromagnetic spectrum, they fall before infrared light but after radio waves (Heckert 2007).
MICROWAVE BANDS.
Water, fat, and sugar molecules in the food absorb energy from the microwave beam in a process called dielectric heating . Electromagnetic radiation - Electromagnetic radiation - Microwaves: The microwave region extends from 1,000 to 300,000 MHz (or 30 cm to 1 mm wavelength). -- A 'microwave' is a radio wave with any wavelength shorter than 10 centimeters. A microwave oven works by passing microwave radiation, usually at a frequency of 2450 MHz (a wavelength of 12.24 cm), through the food.
Different wavelengths of microwaves (grouped into "sub-bands") provide different information to scientists. See more.
Microwaves definition, an electromagnetic wave of extremely high frequency, 1 GH3 or more, and having wavelengths of from 1 mm to 30 cm. Water, fat, and sugar molecules in the food absorb energy from the microwave beam in a process called dielectric heating . Microwaves are a portion or "band" found at the higher frequency end of the radio spectrum, but they are commonly distinguished from radio waves because of the technologies used to access them.
For food to be heated in a microwave oven, microwaves must pass through the food.
Technically speaking microwave is an electromagnetic wavelength and a microwave oven is an appliance that functions using the microwave (electromagnetic wavelength). A microwave oven works by passing microwave radiation, usually at a frequency of 2450 MHz (a wavelength of 12.24 cm), through the food. Although microwaves were first produced and studied in 1886 by Hertz, their practical application had to await the invention of suitable generators, such as the klystron and magnetron. However, in common language microwave is just used as a short form of a microwave oven.