Radar screen display from a boat. Radar uses radio waves to determine the distance and direction to objects. An emitter sweeps a radio beam around the

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Radar screen display from a boat. Radar uses radio waves to determine the distance and direction to objects. An emitter sweeps a radio beam around the boat (which is at the centre of the display), and a detector picks up the reflections from objects such as other boats and rocks. Such objects are displayed as green patches.

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Size: 4005px × 4359px
Photo credit: © VICTOR de SCHWANBERG/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: boat, detection, display, equipment, instrument, navigation, navigational, radar, radio, range, ranging, scanning, science, scientific, screen, ship, technique, techniques, technology