Word: layer
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Dates: during 1950-1950
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...trouble with such complicated chambers is that they operate only for a brief period after the air has been rarefied. Brookhaven's simple chamber works continuously. It consists of a metal plate standing on a layer of dry ice and covered with black velvet for better visibility. On top of the plate sits an open-ended glass cylinder anywhere from 5 to 17 inches in diameter. A second metal plate with a layer of felt cemented to its under side is placed on the cylinder. On top of the whole apparatus is a tray of water at room temperature...
...chamber in operation, the felt under its cover is saturated with methyl (wood) alcohol. The alcohol vapor diffuses downward, becoming colder as it approaches the dry ice at the bottom. At some point in its downward motion it makes the air supersaturated. In this sensitive layer, cosmic rays or other fast-moving atomic particles leave trails that show up in a flashlight beam as brilliant white streaks...
...much beyond a floppy bush hat and an armband. At another place I saw men building one of those Beau Geste forts which dot the delta. They were using salvaged bricks, mortared with mud. When the lookout tower is high enough they will face it with a thin layer of cement that will keep out water, but not much else. Said a French officer sadly: "It won't stop a bazooka." (Last week Communists using a bazooka breached one of these forts...
...consensus: Hexameron was a six-layer cake that would never do for a steady diet, but it was fun to take once in a while...
...moon (240,000 miles, 9½ hours); Venus, Mars, Jupiter, or Saturn (790 million miles, 1,333 days). The planetarium's "Passenger Briefing" warned that the moon is no such warm romantic place as it might seem over Miami, but rather a chill, arid spot, covered with a layer of dustlike pumice several feet thick, where conversation would be impossible, climate problematical, and locomotion difficult. While working up to a speed of 3,621 m.p.h., those with high blood pressure might suffer momentary blackouts...