Fig. 2.FOTJCA-DLTS EXPEBIMENT. wooden cup containing a globule of mercury, whichtouches a wire leading out of the wood and commu-nicating with one binding post of the sounder ; theother binding post is connected with one pole of thebattery, the remaining pole of which is connected elec-trically… … r-<- -^ Sci. ^m. N YFig. l.-OSCILLATING AND CONICAL PENDTJLTTMS. or copper point, which is capable of just touching themercury globule as the pendulum swings. By this ar-rangement an electrical contact is made for each swingof the pendulum, and the sounder is made to click eachtime the circuit…
Contained · Water · Munn · Patents · Scientific American · Type writing · Storage batteries · Caustic soda · Electric motor · Address munn · Van depoele · Horse power · Softening water · Sewing machine
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
