Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 21
will be correctly indicatedby the deflection of the needle. 440 HAWKINS ELECTRICITY Sometimes each needle is surrounded by a coil, as in fig. 512,the coils being so connected that the direction of current in eachmil tend to deflect the needles in the same direction, Oues. For what use is the… … Fig. 513.—Queen reflecting astatic galvanometer. It is mounted on a mahogany base withlevelling screws. A plain mirror is attached above the upper needle. The entire combina-tion of mirror and needles is suspended by unspun silk from the interior of a brass tube,which also carries a weak…
Electrical engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
