Word: beaming
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Dates: during 1930-1939
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...years perfecting under Dr. Frank G. Kear and Gomer L. Davies of Washington Institute of Technology, Harry Diamond of the National Bureau of Standards, and the Bureau of Air Commerce radio development chief, W. E. Jackson. It consists of three radio transmitters, one to send a radio course beam, one to send a glide beam, and a radio marker beacon. Beacon, transmitters are housed in an automobile trailer that can be moved to the various runways on the landing field. The marker beacon is installed at the end of the runway...
...practice the pilot approaches the airport in the normal manner along the regular route beam. Twenty miles out his radio receiver, containing a reed converter, locates the course beam from the transmitter-trailer. About four miles from port at a given altitude it strikes the glide beam, a curved path of constant intensity in a field of radio waves. On the pilot's dashboard is a "cross pointer dial" operated by the reed converter. One needle indicates the course beam, the other the glide beam. Keeping the needles crossed at right angles,* the pilot guides his ship down...
...course the vertical needle on the dial will waver to one side. If he is off the glide beam, the horizontal needle rises or falls...
Like most U. S. submarines at the outbreak of the War, the L-9, 150-ft. overall, 16-ft. beam, was a crowded, smelly, temperamental craft. She could make 14 knots on the surface, but her red-enameled Diesel engines shook themselves to pieces so frequently the crew strung up nets to avoid being hit by flying parts. She had a 3-in. disappearing gun that could be coaxed up on deck after great labor, but had a disconcerting habit of vanishing into its compartment without warning, before or after it was fired. Her crew of 28 men and four...
Fast moving electrons make an impression on a photographic plate as X-rays do, but Davisson's electrons were too slow to obtain such a picture. So he "felt" the pattern of his reflected beam by moving an electron collector around in the recoil region. Connected to an ammeter, the collector translated the strength of the electron beam at a number of points into measured electric current. The pattern having been thus patiently and ingeniously mapped out, it was seen to consist of true diffraction rings. Concluded the researchers: "Our experiments establish the wave nature of moving electrons with...