antenna

2 ENTRIES FOUND:

antenna

Component of radio, television, and radar systems that directs incoming and outgoing radio waves. Usually of metal, antennas range in shape and size from the mastlike devices used for radio and television broadcasting to the large parabolic reflectors used to focus satellite signals and the radio waves generated by distant astronomical objects and reflect them toward the centrally located receiver. Antennas were invented in the 1880s by Heinrich Hertz; Guglielmo Marconi made many improvements.

Variants of ANTENNA

antenna or aerial

This entry comes from Encyclopædia Britannica Concise.
For the full entry on antenna, visit Britannica.com.

Seen & Heard

What made you look up antenna? Please tell us what you were reading, watching or discussing that led you here.

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More