Microwaves have wavelengths that can be measured in centimetres. Microwaves are widely used in modern technology. They are used for diverse applications like heating food in a microwave oven, garage door openers, particle accelerators and for transmitting information from one place to another. Shorter microwaves can be used for radar, like the Doppler radar used in weather forecasts.
Image acknowledgement: Andriy Popov, 123RF Ltd