Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 16
compass to sink in until itstop is even with the upper surface of the block. On one edge ofthe block cut two slots, each one-half inch in width and three- EASY ELECTRICAL EXPERIMENTS. 7 eighths inch deep. The centers of these slots should be five-eighths of an inch from the corners of the block. Do… … the current and which are to act upon the needle, causing it todeflect when a current passes through them. Beginning withthe left hand coil, wind it over and around the block until therequired ten layers is obtained, then cross the wire on the underside of the block over to the right hand slot, and…
Electric apparatus and appliances · Electricity
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
