Word: changed
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Dates: during 1960-1969
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Indoor Whirlwind. While Florida was still cleaning up its storm damage, another tornado started spinning in Washington, D.C. But this one was manmade, and it whirled with promise. Generated in a laboratory at Catholic University by Chinese-born Dr. Chieh-Chein Chang, head of the university's space sciences department, the indoor twister probably came closer to simulating a real tornado than any other artificial storm ever produced. By carefully analyzing its characteristics, Chang hopes to learn how to build structures that will better withstand the deadly twisters and perhaps point the way toward more accurate prediction and even...
...reap his whirlwind, Chang started a smoke generator installed beneath a screened cylindrical cage 9 ft. high and 6 ft. in diameter. After the smoke was drawn toward the top of the cage by a powerful exhaust fan, the cage itself began to revolve. As the screen approached six revolutions per minute, it imparted a rotary motion to the air being drawn through it by the fan. The rising smoke gradually turned into a column that rotated at 1,200 r.p.m., whistling around in the cage at speeds up to 40 m.p.h. Pieces of confetti on the floor...
...Bottom. Using tiny temperature, velocity and pressure recorders, Chang has already gathered some basic data on his miniature storm and discovered that it conforms to tornado dynamics in two ways: the motion of the column is faster at the top than the bottom, and pressure at the bottom of the funnel, surrounding the low-pressure "eye," is considerably greater than at the top. It is this extremely low pressure in the eye and the high-velocity winds in the funnel that make the tornado so deadly. To better determine the forces at work, Chang intends to build a larger cage...
...Central Garrison Because of the far-reaching effects of the class struggle, especially the Two-Road Struggle in the villages on ideology, and also the natural disaster which happened last year and this year, there is some unrest in thought among a part of our comrades. The soldier Chang Lichen said: "At present, what the peasants eat in the villages is even worse than what dogs ate in the past. At that time dogs ate chaff and grain." Commune members ask: "Is Chairman Mao going to allow us to starve to death?" The soldier Liu Ho-shan said: "Our country...
They are: David J. Baker '66, Johnathan P. Goldman '66, Alan E. Lazar, Craig Donaldson, Frederick P. Schaffer '68, John T. Sackton '68, George M. Tiller '68, Henry W. Corbett '66, Lucy Moore '66, Virginia Wiesell David A. Link '66, Charlene S. Chang '66, Kate G. Wenner '69, Patrick J. McGinity '66, Alan H. Venable '66, and James S. Wylie...