Telegraphy and how to learn it; with brief chapters on elementary science, embracing various kinds of electricity, electrical measurements, thermo-frictional electricty, batteries, magnets and magnetism (1901)
Frederic, Wilson. [from old catalog] · Chicago, The Henneberry co · leaf 46
n temperature of the two extrem-ities of the pair. The strength of the currentis also dependent, as in the voltaic pair, onthe thermo-electro motive force of the met-als employed. The electro-motive force of the thermo-electric pair is very small in comparisonwith that of the voltaic pair; hence… … \+ y; viz., by joining the metal of one pair to themetal of another. Figure 13 represents suchan arrangement. The light bars are bis-muth, and the dark ones antimony. If thesource of heat is strong andnearly, either conduction orconvection, one face may beheated much hotter than theother, and a…
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
