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 338
above valuations areidentical. M. {a) Symbol of gaseous pressure equal to one-millionth of anatmosphere. STANDARD ELKCTRICAIv DICTIONARY. 333 (d) The Greek m, /i, is used as the symbol of magnetic permea-bility. Machine, Cylinder Electric. A frictional electric machinewhose rotating glass is in the… … Fig-, 217. Plate Frictional Electric Machine. It consists of a plate or cylinder of glass mounted on insulatingstandards and provided with a handle for turning it. One or morecushions of leather are held on an insulated support, so as to rubagainst the plate or cylinder as it is turned. A metal…
Electricity
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