Examlex
Identify the set as finite or infinite.
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Microwave
An electromagnetic wave with a wavelength in the range of 1 millimeter to 1 meter; also refers to a kitchen appliance using microwaves to heat or cook food.
Radio
A technology that uses electromagnetic waves to transmit or receive sound and other types of data over long distances without wires.
Satellite
An artificial body placed in orbit around the earth or another planet in order to collect information or for communication.
Fiber
Fiber, in the context of telecommunications, refers to fiber optic technology, which uses glass or plastic fibers to transmit data at high speeds over long distances.
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