Word: gaseous
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Dates: during 1930-1939
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...Then four more carbons enter and join the groups. The molecules are suddenly aware of their gaseous nature and the atoms execute nuclear spins as the fast throbbing chords of the ethylene and acetylene dance are heard...
...these were not jittery times, we might safely ignore windbags of the Coughlin or Heflin ilk, who have a tendency to explode of their own inflammable gaseous content -or are discarded by a weary public to the obscurity ash heap...
...heat. This process yields only 44% gasoline (the money-making product), leaves refiners with a great bulk of fuel oil and other by-products to dispose of. Phillips Petroleum Co. has lately found a way to convert some of these by-products into gasoline-through polymerization, which compresses wasted gaseous fractions of crude oil into the heavier molecules of gasoline...
...casing-head process," next by "cracking," finally by hydrogenation. Cracking, of which hydrogenation is a continuation, consists of breaking down the molecular structure of heavy crude oil into a number of lighter, more salable derivatives such as kerosene and gasoline. Polymerization is the reverse; it takes the very lightweight, gaseous fractions of petroleum, which were formerly wasted or used only in restricted ways,* and through pressure, heat and catalytic agents builds them into heavier molecules for high-test (antiknock) gasoline...
...life of planetary nebulae has been found by Fred L. Whipple, instructor in Astronomy, to be, on the average, about 30,000 years. These bright bodies with their large and rapidly expanding gaseous envelopes, develop in the manner of exceptionally slow novae...