Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 72
coincidence of the sHts shall be shortcompared to the duration of non-coincidence. This condition isin some degree brought about naturally by the fact that the prongshave their maximum velocities in passing through the equilibriumpositions. It is improved by vibrating the fork at large… … Typical time-scale record. condition is remedied by adjusting the slits or sometimes moreeasily by using only the alternate timing lines on the film in makingthe measurements. The advantages of a time scale of this character over a sinu-soidal trace are rather obvious. To obtain any precision…
Science · Technology · Meteorology · Patents
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