Word: vacuums
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Dates: during 1920-1929
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...Club will have a joint meeting with the Boston section of the Institute of Radio Engineers, the Technology Radio Society, and the C. W. Club of Boston. Mr. W. C. Club of Boston. Mr. W. C. White of the General Electric Company is to speak on some phase of vacuum tube work at this meeting, which will be held in Room 5-330, Pratt Naval Architecture Building, M. I. T., at 8 o'clock. The lecture will be preceded by motion pictures, probably a short comedy...
...nature, aiming particularly to explain some of the phenomena connected with "radio", in such a way that the layman can understand them. Professor Pierce will give a demonstration of reception, with loud speakers and amplifiers, with an explanation of the phenomena involved, emphasizing particularly the influence of the vacuum on wireless work. The lecture will be open free of charge to all members of the University and their friends...
...members of the University and their friends, will appeal especially to those who have no intimate knowledge of the theory of radio. Professor Pierce will give a demonstration of reception, with loud speakers and amplifiers, and will explain the phenomena involved, calling particular attention to the influence of the vacuum tube on communication engineering...
About 30 undergraduates are connected with the club, which has been materially assisted by Professor G. W. Pierce '99, director of the Cruft Memorial Laboratory. The club maintains a transmitting outfit of two types, one a vacuum tube transmitter of 10 watts power, known as the C-W type, with which they have communicated with Washington, D. C., New York, New Jersey, and stations nearer. It is planned to install a larger set of 50 watts power in connection with which they will have a radiophone. The usual receiving equipment with two stages of amplification has given good results, enabling...
...more exact. The recent experiments were performed upon the eyes of frogs. The frog was killed and his eye was then immediately removed. The eyeball was cut in two and the optic nerve, which ordinarily connects it with the brain, was attached instead to two electrodes connected with a vacuum-tube amplifier such as is used in wireless telegraphy...