Word: cruft
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Harvard's new Research Laboratory of Physics, now under construction, which is to connect the present Jefferson and Cruft Physical Laboratories, should be completed by the middle of February, according to Doctor F. H. Crawford, instructor and tutor in the division of Physical Sciences...
...second floor will be devoted to offices, conference rooms and a section for high frequency and radio research work. The latter will be located near the Cruft Laboratory end. According to the contractor's specifications, the new building will have a volume of about 500,000 cubic feet and the walls of the library, lecture room, and corridors will be coated, with a special sound-absorbing, plaster, invented by Professor Sabine...
...Cruft Laboratory, among the numerous researches that have been under way, Miss Charlotte T. Perry, graduate student in Radcliffe College, and Professor E. L. Chaffee have completed a research on the absolute determination of the ratio of the charge of an electron to its mass. This research makes use of a direct measurement of the time required for an electron to move from one point to another under the action of a high-voltage field. The electric field was obtained by the use of the 100,000-volt storage battery belonging to the laboratory and the timing of the electron...
...following article on the Cruft Laboratory research was written for the Crimson by G. W. Pierce, Rumford Professor of Physics, and director of the Cruft Memorial Laboratory...
During the past year at the Cruft Laboratory Professor G. W. Pierce has been engaged in making some precision clocks for laboratory and observatory use. One of the clocks employs a pendulum enclosed in a vacuum chamber and kept at constant temperature. The pendulum has no escapement, driving spring or other mechanical attachment. Instead it is provided with a small slit through which a beam of light passes at each swing of the pendulum. The beam of light falls on a photoelectric cell and produces an electric current of short duration each second. These current pulses drive an auxiliary second...