Word: detectably
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Dates: during 1940-1949
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...Among new developments to come: instruments to detect infra-red rays given off by airplane motors, thus help to locate enemy aircraft...
Because the jellylike body tissues tremble for a brief instant after every "blow" from the heart, after-vibrations warp part of the record. Hence Dr. Starr believes that his machine will never attain "highest precision." Nevertheless it is good enough to: 1) detect early, hitherto invisible cases of heart disease; 2) show the relation between high blood pressure and heart function; 3) differentiate between various types of heart disease...
...true, says Author Andrews, that bulls get mad when they see red-all mammals except monkeys and men are colorblind. Many animals can be taught to detect slight differences of shade, but when variously colored disks emitting the same intensity of light are presented, the animals are baffled. Thus a dog sees the world, including his master, in various shades of grey, as in a photograph. But birds, fish and insects can distinguish colors...
There is but one solution, one safe-guard against these dangers. Peepholes must be cut so that students may at any time detect foul play behind the fences. Student opinion has been marshaled into unanimity on this issue. The University must comply...
...putting sand and cinders in locomotive grease chambers to create hotboxes, vinegar or sugar in gasoline tanks to stall cars. One particular trick stressed in the school was stretching a thin wire across highways at a height of 4 ft. 3 in. to decapitate enemy motorcyclists. Lest a rider detect the wire, volunteers were told to place a dummy at the side of the road to distract his attention at the crucial instant...