Word: overheads
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Dates: during 1980-1989
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Purcell also showed how a rocket launches and what the gas argon would like like from the viewpoint of a molecule using polaroid transparencies and an overhead projector...
Simple demonstrations can illustrate profound concepts in physics, Nobel-prize winning physicist Edward M. Purcell--who called the overhead projector "the greatest invention since chalk"--told a small crowd in the Science Center yesterday...
Using a tennis racquet, a cardboard box and an overhead projector, Purcell, Gade University Professor Emeritus, demonstrated that light is transmitted in waves rather than particles, and other basic theories of physics...
...have never seen anything change a teaching situation as drastically and abruptly as the overhead projector," Purcell said to the group of teachers in the last three presentations in the Professional Training Series sponsored by the Harvard-Danforth Center for Teaching and Learning...
...overhead further, Nevin sold the Firestone Plastics Co. to Occidental Petroleum for $200 million, omitted two dividends to shareholders, peddled two luxury corporate jets and put the Firestone Country Club up for sale. Says Nevin: "After cutting 24,000 jobs, we had no business running a country club for a thousand employees...