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Microwaves
Microwaves are used in communication, radar, and cooking! Microwaves can heat water using a process called dielectric heating. This has led to the invention of microwave ovens.
Uses of Microwaves
In communication, microwaves are used for “line-of-sight” transmission. Relay stations separated by distances of about 50 km are used to boost the strength of incoming signals. Issues with transmission arise if something gets in the way.
Radar
Radio detection and ranging (radar) uses microwaves or radio waves to detect objects. The distance to the object can be found by timing how long a reflected Electromagnetic pulse takes to return. Speed cameras use radar to measure a car’s speed.
