Word: volts
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...keep roaming dogs off his lawn, Arthur W. Burns, a Narberth, Pa. electrical engineer, strung a single wire around his property, a foot above the ground, attached the wire to his no-volt electric light system. When a trespassing dog grazed the wire last week, it got an electric shock, ran away yelping. Soon the Society for the Prevention of Cruelty to Animals heard about Mr. Burns's electric fence, asked for an injunction to compel him to remove it. Few days later the Philadelphia Electric Co. tested the fence, pronounced its amperage too low to harm dogs...
...some 250.000 miles of electric fence in use on more than 100.000 U. S. farms. Most of them consist of a single wire, though many farmers use two, or even three, for small animals. Two or three feet above the ground, the wires are connected with the no-volt electric supply line or to a 6-volt battery through a controller which governs the voltage and current so that the fence will shock livestock without injury. A survey Idaho took two years ago showed that the State's farmers are turning more & more to electric fences, are finding...
Riggs, enthusiastic over the scientific aspects of his machine, described how the process works. When a revolver inounted on a table is fired, it severs a wire carrying a current, thus tripping a high-power 7500 volt condenser. As the bullet passes the open shutter of an ordinary Kodak, the tremendous electrical discharge causes a spark of approximately 900,000 candlepower to flash for 1-1,000,000 to 1-1,500,00 of a second. It is the inconceivable brevity of the flash and the enormous voltage released suddenly by the condenser that make possible such a high-speed...
...electrodes until the potential is such that a mighty flow of direct current crosses the gap. For technical reasons, notably the difficulty of constructing a discharge tube which will handle the flow of high-voltage particles, the practical upper limit for these types is about 2,000,000 electron-volts. Massachusetts Institute of Technology, which had a giant electrostatic generator shooting 7,000,000-volt sparks from electrode to electrode four years ago, has not yet put it to work smashing atoms because of the discharge tube problem...
Several dozen U. S. hospitals have X-ray machines transforming 400,000 volts of electricity into X-rays for the treatment of cancer. Half-a-dozen have machines ranging from 600,000 to 1,200,000 volts. Last week the man most responsible for the development of vacuum tubes which accomplish those tremendous transformations of energy, Dr. William David Coolidge of General Electric Co., reminded the Fifth International Congress of Radiology in Chicago that Massachusetts Institute of Technology has a 5,000,000-volt generator which could be adapted for X-ray work, told them that an experimental...