Word: carbons
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...there is also an electrolytic cell that turns sea water into oxygen and hydrogen, shooting the latter out of the submarine. For emergencies, the Naval Research Laboratory has provided ingenious "candles" made of sodium chlorate and powdered iron. When they are ignited, they emit oxygen, not the carbon dioxide that is given off by ordinary candles...
Scientists have known for almost two centuries that plants, in one of nature's most mysterious processes, use sunlight to make sugar, fats and other high-energy chemicals out of water and carbon diox ide. They have known for more than one century that this vital food-making process-photosynthesis, the prime mover of life on eartn-is accompusned by chlorophyll, a strange, green substance whose molecule has a single atom of magnesium framed like a jewel in its center. Generations of chemists have tried to synthesize chlorophyll-and failed. But last week Harvard University announced that Professor Robert...
...mark is the Pleistocene, an epoch of intermittent ice ages during which man became true man. The geological dating system that uses the decay of uranium and other radioactive elements to tell the age of very ancient rocks is much too vague for the comparatively short Pleistocene. Dating by carbon 14, which is fine for recent times, reaches back only 60,000 years-not nearly enough...
...trying to identify mysterious sounds, then put on infrared glasses and saw a jet plane overhead, a Jeep picking up a wounded man, an enemy infiltrator creeping toward them. In another room a model missile aircompressor system went whoomp, shooting a miniature missile ceilingward. In a third, a miniature carbon-dioxide plant emitted a cloud of gas and strewed bits of Dry Ice on the floor. The gadgets are just a few of the ingenious devices that Colonel Frank J. Polich has built to help 10,000 soldiers each year understand the increasingly complex jobs they must perform...
...strong smog-control bill, aimed at smog-choked Los Angeles, requiring that cars in California be fitted with suppressors to cut down on engine hydrocarbons and carbon monoxide. Progress will be slow: first the state has to approve a suppressor design; then motorists have to get the smog-stopper installed...