Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 351
the shell before placing it in the gun. In some cases thechange in the earths liux through the coil due to the passage of ashell (shells from 3 to 6 inches in diameter have been used) wassufficient, and owing to the fact that the effect was easily obtainedand that it was difficult to get damped… … illoqraph I Solenoid Chronograph ■^~ for measuring gun \^i^^ i/elo cities is shown in Fig. 10, and a separate view of the rotatingspiralling drum in Fig. 11. In this latter view is seen an ingeniousmagnetic clutch due to Doctor Karcher. of the Bureau, by meansof which the rotating drum can be made…
Science · Technology · Meteorology · Patents
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
