Word: alloy
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...result, the Government, which sells coins to banks at their face value, will soon be minting unheard-of profits. With the new copper-nickel alloy coins authorized by the bill, the cost of turning out a dime will drop from 9.5? to .6? quarters, from 23.6? to 1.5? and half dollars, from 47.3? to 26.5?. Revenues from coin manufacture will leap from some $100 million in 1965 to $1 billion...
...ship was a space scientist's dream laboratory-crammed to capacity. Its four panel blades shone purple from the thin sapphire-glass coating that protects their 28,224 tiny solar cells from radiation damage. Its silvery octagonal body, made of magnesium and aluminum alloy, carried 138,000 components, including 31,696 delicate electronic components ranging from a computer to a small, lO½-watt radio transmitter. It was programmed and equipped to send to Earth a continuous stream of reports on 39 scientific and 90 engineering measurements. Crowded into the spacecraft were a new type of helium gas magnetometer...
...Atomics International, who built SNAP-10A for the Atomic Energy Commission, produced a machine like nothing now working on earth. Its fuel is 4.75 kilograms (10.5 lbs.) of uranium 235, the nuclear explosive used in the first atomic bomb. Packed into 37 tubes of heat-resistant nickel alloy, the fuel is mixed with zirconium hydride, which acts as a moderator, slowing down the high-energy neutrons released by fissioning atoms of U 235. The heat of the reactor is carried away by a sodium-potassium alloy (NaK) that turns to liquid at 48°F. A beryllium reflector...
Such speeds were made possible by the invention in the early '30s of an aluminum-nickel-cobalt alloy known commercially as alnico, which has magnetic properties that enable the cars' tiny motors to rev up to as much as a staggering 25,000 r.p.m. They buzzed over from England to the U.S. about ten years ago, but only in the last year or so have they moved out of the hobby shops and the subteen set to become a full-scale way of life. Epicenter of the new wave is California, where there are now about 300 slot...
...ductless hood for the stove, just introduced by Puritron, uses electronics to cope with the smoke and grease that all too rapidly foul the usual hood's charcoal filter. A tiny ion tube of gold alloy releases a stream of negative ions when the hood is turned on, promptly attacking the positive ions in the air, around which the molecules of smoke and cooking odor gather. This precipitates the molecules on an easily washed aluminum filter-releasing fresh, clean air again. In three sizes and colors...