Gallery
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Parabolic antenna - the 70m antenna at Goldstone
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Helical antenna
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A Yagi-Uda antenna. From left to right, the elements mounted on the boom are called the reflector, driven element, and director. The reflector is easily identified as being a bit (5%) longer than the driven element, and the director a bit (5%) shorter.
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A giant phased-array radar in Alaska
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Holmdel Horn Antenna in Holmdel, New Jersey Built to support the Echo satellite communication program, it was later used in experiments that revealed the cosmic background radiation permeating the universe.
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Voyager 2 spacecraft. The HGA (a parabolic antenna) is the large bowl-shaped object.
Read more about this topic: High-gain Antenna
Famous quotes containing the word gallery:
“It doesn’t matter that your painting is small. Kopecks are also small, but when a lot are put together they make a ruble. Each painting displayed in a gallery and each good book that makes it into a library, no matter how small they may be, serves a great cause: accretion of the national wealth.”
—Anton Pavlovich Chekhov (1860–1904)
“To a person uninstructed in natural history, his country or sea-side stroll is a walk through a gallery filled with wonderful works of art, nine-tenths of which have their faces turned to the wall. Teach him something of natural history, and you place in his hands a catalogue of those which are worth turning round.”
—Thomas Henry Huxley (1825–95)
“Each morning the manager of this gallery substituted some new picture, distinguished by more brilliant or harmonious coloring, for the old upon the walls.”
—Henry David Thoreau (1817–1862)