Word: vapor
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Dates: during 1940-1949
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...more the world's makers of air-cooled aircraft engines had pondered one problem: how to fabricate strong cylinder heads cheaply. Even the best cylinder heads sometimes cracked under prolonged stress. Heads have two functions: to withstand the tremendous pressures generated by the cylinder's air-gas vapor explosions, and to drain off excess heat with flangelike cooling fins. To drain off the heat was the tough problem. England's Bristol works whittles fins in forged heads at tremendous expense. In the U.S. a less costly scheme was adopted. Heads were cast in a bird...
...mercury "bomb" is spot-welded to one cathode and is exploded by heat applied just before the fluorescent tube is sealed, thus releasing mercury vapor into the argon-filled lamp. Twofold result, claimed by Hygrade Sylvania: 1) stable performance of every tube; 2) savings of up to 50% of mercury previously wasted...
...vision and experiment for 30 years, the mercury-vapor turbine is now finally developed to a point where it may yield the 50% or more increase in power-producing efficiency which has long been hoped from it. For three General Electric engineers (in papers recently published by the American Society of Mechanical Engineers) report that the known faults of mercury-vapor engines have at last been conquered...
...heat into energy. Reason: most of the heat must always be transferred not to the turbine's whirling rotors as force but to the water which cools and condenses the steam for re-use in the boiler. Much of this wasted heat is conserved in a mercury-vapor turbine operating with a secondary steam turbine. The mercury vaporized at 975° F., blasts through the rotors and then, while condensing, boils the water which cools it. This creates steam for a second turbine. Some heat is still wasted, of course, when the steam in turn is condensed...
...Sophomores were demonstrating the lethal weapon to a couple of girls in their room when one of them lifted the plunger, and released the lachrymose vapor. Amid great wailing and gnashing of teeth, and many tears, the victims groped for windows and means of egress...