The elements of dynamic electricity and magnetism (1903)
Atkinson, Philip. [from old catalog] · New York, D. Van Nostrand company · leaf 144
arge diam- RLE C TRIC ME A S UREM EN T. 127 eter and circular form of the coil are to create a field ofapproximately uniform strength within the small centralarea in which the needle rotates ; the inner lines offorce from the current converging to the centre ; andthe needle is made short so as to… … tically no resistance, and not requiring a supportingframe. The coil terminals are connected with twotubes shown at the base, one inside the other, insulatedfrom each other and furnished with binding-screws.The needle-case is from four to five inches in diameter.The tangent values are sometimes…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
