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What is a microwave?

TWI Frequently asked question

by Sam Rostami

A microwave is an electromagnetic wave with a frequency of between 0.3 to 300GHz, which corresponds to a wavelength of 1 metre to 1mm. Wavelength is calculated by dividing the speed of light (300,000,000m/s) by the microwavefrequency in Hz.

The use of high frequency microwaves is gaining popularity in remote sensing applications such as driver reversing aids in motor vehicles. Lower frequencies are used in electronics and wireless communications, such as mobile phonesand broadband services.

Further information

How is microwave energy absorbed into an adhesive?
Why are microwave-transparent adhesives important?
Are polymeric adhesives microwave transparent?
How do impurities in an adhesive affect microwave attenuation?