The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 377
well to cover the mercury with alcohol. The 372 STANDARD ELECTRICAL DICTIONARY. cup may be filled so that the mercury rises in a meniscus or semi-globule above its edges. For some purposes this form is useful, asfor contacts with the end of a swinging wire or pendulum, becausein such cases the… … Fig. 239. Schallenbergs Alternating Current Meter. Meridian, Astronomical. The great circle passing throughthe north and south poles of the celestial sphere. It lies in a planewith the corresponding geographical or terrestrial meridian. Meridian, Geographic. The true north and south meridian ;the…
Electricity
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