Word: extract
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Dates: during 1960-1969
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Entomologists have known since 1913 that an essence extracted from the abdomen tips of female gypsy moths would bring excited males from as far as half a mile away. For years they used this natural extract as bait in traps set out to locate colonies of the destructive moths, but the stuff was much too scarce for more than small-scale...
...market was a Schwartz offering of dehydrated firefly tails at $5 per gram as a sensitive test for ATP-adenosine tri-phosphate-a vital chemical that is found in nearly all living cells. When ATP is added to an extract of firefly tails, the solution lights up, and the amount of light given off is proportionate to the amount of ATP. By measuring the light, the ATP can itself be measured...
...also had a long conversation with Russia's Vasily Kuznetsov, who was strongly urging armed entry into Katanga, hoping thereby to drive a wedge into the NATO powers, who would have to line up on different sides of such a resolution. Ham marskjold gambled that the Russians would extract every possible drop of propaganda advantage from their bluster but that they would not oppose the African states in a showdown-and perhaps he got a wink that told...
...involved becomes clear. On the second day, they work at such disarming exercises as stating whether it is true that __ +984 = 984+793. The point is to discover that adding numerals in varying orders does not affect the sum. Later they watch a movie projector running backward and forward, extract the rules of positive and negative multiplication. Then they see two unpunctuated signs : "Slow Children at Play" and "Save Rags and Waste Paper," a good case for algebraic brackets and parentheses. It takes time, concedes Beberman. "But we feel that every child needs to experience the delight of a researcher...
...called chlorophyll in toothpaste, chewing gum, etc., alleged to deodorize the breath, is a chemically altered natural extract, usually copper chlorophyllin...