Word: filterers
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Dates: during 1930-1939
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...incompetent Osages are now most competent, for they have cash reserves in Washington and their incomes are stable, amounting to $1,000 per quarter-year, with special cash dispensations for special needs. The competent Osages are now, with a few fine exceptions, busted, except for meagre funds that filter in from new oil production and lease sales...
...them to lethal gases like phosgene which were fired in the same bombardment. Favorite irritant of the Germans was diphenylchlorarsine. The Entente developed a similar one called diphenylaminechlorarsine (Adam-site), but never got it into action. These irritants are not stopped by any canister chemicals and an extremely efficient filter, which makes for hard breathing, is necessary...
...tells the story of her son, who, although she is convinced of his innocence, is accused of counterfeiting, her address to the microphone is not a performance. When she breaks down, her agonized cries are not subject to criticism. No question of technique is involved to determine whether they filter through the microphone with a tone of heart-breaking sincerity...
...have come to quite a different conclusion as to the size of the particles in the vast dust cloud of the Orion Nebula. In this case the particles scatter the blue and yellow-green components of the light of stars in the cloud, letting only long infra-red rays filter through. Hence the stars appear much redder than normal. The wave lengths Baade & Minkowski recorded convinced them that the dust grains in the nebula were about .000004 inch in diameter...
...assumption that ultraviolet light did have this lethal effect a number of U. S. hospitals irradiate the air of their operating rooms with artificial sunlamps. Last week it seemed reasonable to assume that modern theatres, auditoriums, stores and offices which filter and condition their air may also irradiate it with ultraviolet light...