Allotropic forms of six elements, produced under pressures of three-quarters of a million pounds per square inch, is the most recent contribution to science by Percy W. Bridgman '04, professor of Physics.
In his tiny high pressure laboratory, Professor Bridgman has produced forms of bismuth, gallium, calcium, strontium, barium, and cesium which have never been seen before. As in the case of red and yellow forms of sulfur that are seen under ordinary pressures, he has made forms of these elements that differ from their usual forms in appearance and in physical properties.
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