Word: detectors
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Dates: during 1930-1939
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Last week Dr. Langmuir talked about stearic acid, a substance found in animal fat, which makes a monomolecular film one ten-millionth of an inch thick. This turned out to be an extremely sensitive detector for atoms of metal in water. If the metal atoms are jostled around by stirring the water, they will soon strike the underside of the film, adhere to it. The film is skimmed from the water, allowed to contract. If it contains no metal, when viewed by polarized light it will give a double refraction effect in handsome colors. But if there were only...
...like him well enough." They then strolled down the boardwalk to pledge loud co-operation in cocktails. Roared Miss Slye, 57, wagging a finger: "Clarence Cook Little, you're a big handsome numskull." Roared Dr. Little, 48: "You're not a geneticist, Maude Slye." Cancer Detector- Dr. Walter Schiller of the University of Vienna, offered a simple new way of determining whether or not a woman has cancer of the cervix...
...souls in central France, has had no fire for 600 years; that Holland, in which most buildings are of brick, suffers a smaller annual fire loss than Cleveland. The Society spoke favorably of such modern control methods as fireproof wood (TIME, Jan. 20) and the copper-tube detector which has been installed in the White House, the National Archives Building, the restored colonial edifices of Williamsburg, Va., banks, museums, warehouses, art galleries, libraries, laundries. In this device, concealed in the walls, the heat of a burning wastebasket is enough to expand the air in the tube, move a small diaphragm...
...knew better than Ladenburg and Van Voorhis that radium poisoning rots flesh & bone, finally kills. Terrified they ripped off their clothes, wiped their skins with wet cotton. To find specks they could not see, they used an electrical radium detector of the sort that sets up a staccato clicking in the presence of radioactive emanations (TIME...
...most widely known ''lie detector," the polygraph developed by Law Professor Leonarde Keeler of Northwestern University's Scientific Crime Detection Laboratory, has been useful mainly in extracting confessions from wrongdoers after they were confronted with the evidence of their emotional disturbance. Used by 52 Chicago banks on their employes, the polygraph has turned up many a petty pilferer. Corroborative evidence based on the polygraph has been admitted four times in U. S. courts of law. Last year Governor Comstock of Michigan pardoned a convict who steadfastly denied the murder with which he was charged and successfully passed...