Word: dials
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Dates: during 1930-1939
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...vibrate. Explained Septuagenarian Haas: "I call it a mineral vibrator. . . . The principle on which it works is affinity with affinity. I have to have a gold affinity to detect gold. . . . My instrument is loaded with affinity. ... I tune in with my gold vibrator. It is like a radio. You dial until you get a certain station. . . . When I take it in my hands I am dialed in for gold...
...Advocate has kept a clean legal record so far in its history except for one issue in 1925 which was banned because of a cartoon which appeared in a parody of the magazine "Dial...
...operation, the Kruesi Radio Homing Compass is simplicity itself. You tune in on a commercial broadcast, listen to Paul Whiteman or Father Coughlin. Then you switch off the earphones, turn on the bearing-indicator. A pointer on the instrument-board dial guides you so accurately to the broadcasting station that if a balloon were sent up from it on a string you would cut the string in half, flying blind. By taking cross-bearings on two broadcasting stations you can determine your position to a hair's breadth...
Reduced to simplest terms, the machine has ten "integrators," each of which is set by a hand dial to compute the effect of a variable quantity on the problem to be solved. Each dial sets two movable parts -an 8-in. stainless steel disk, mirror-smooth, and a smaller wheel with a knife edge in contact with the disk. Governed by precisely controlled friction, the speed of the small wheel is the crucial factor in solving any problem. A bevel gearing delivers that factor to the "answer table" where the factors from all the integrators are combined and the final...
...application. Essentially it consists of two thermometers hooked into an electric circuit. In practice one thermometer is buried just under the surface of the soil, the other supported in the air just above. The upper thermometer gives the air temperature, and since the buried one cannot be seen, a dial records the temperature differential between the two. From that the warmth of the ground can be computed...