Word: weighed
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Dates: during 1930-1939
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...limit tanks to 16 tons each (largest present tanks weigh 81 tons). ¶To destroy all prohibited armaments within three years after the coming into force of the treaty which would run for five years...
There things, of course, are defects common to all elementary courses, no matter what the field. Once they are recognized and allowed for, one can see the advantages which more than out weigh them. Mallinckrodt laboratory is one of the finest available for undergraduate work. The average student will only begin to realize the opportunities open to him in its complete equipment and its storerooms after he has spent his four years there. The storerooms, in particular, are kept up to the minute in new developments in the chemical world, and if one is fortunate enough to have made...
Cambridge's "positron" is a particle of positive electricity no heavier than the particle of negative electricity called the electron. Protons, heretofore considered the smallest unit of positive electricity, weigh 1,850 times as much as electrons. Cambridge's Paul Adrien Maurice Dirac long ago declared that mathematical necessities require the existence of light-weight protons. Last year Caltech's Carl David Anderson noticed some ion tracks which implied impacts from Theorist Dirac's light protons. Before the Royal Society last fortnight, Dr. P. M. S. Blackett, 35, tall, pale member of Lord Rutherford...
...possibilities for good does not, in our unskilled hands, prevent their collateral consequences from being peculiarly dangerous; nor does it lessen the difficulty of maintaining social balance in the midst of rapid change. Unless we learn how to maintain our stability, the evil consequences of machinery may out-weigh the good...
...ordinary coasting hill. It is an ice-lined ditch 1 1/2 mi. long, twisting down the side of a comparatively small Adirondack mountain. The sleds that go down it are $400 machines equipped with steering wheel, brakes, and seats ten inches above the runners. They weigh 485 lb. and are stored in a garage at the foot of the slide. Such deluxe coasting is a new sport for the U. S. The Mount Van Hoevenberg run was constructed two years ago because the program of winter sports for the Xth Olympiad included bob-sled racing, hitherto practiced only...