urnaled an upright ness is projjortional to the intensity of the field, and shaft, which passes inside of the tube and is rotated inversely proportional to the thickness of the column by means of a crank or pulley. Upon the lower end of mercury. It is in order to obtain great sensitiveness of the… … the latter will be traversed by a continuous circuit that Hg. l.-LIPPMANN'S AMPEEEMETEB. JOHNSTONBAUGH'S IMPEOVED LIMI NO VAT. will last as long as the flow of the mercury does. It is a true unipolar machine, that might perhaps velops a inagnetie field whose lines of force are directed strong…
Patented · Patents · Munn · Scientific American · Steel · Steel rails · Sewing machine · Address munn · Wrought iron · Years ago · Wood working · Lead bath · Magnetic field · Postal order
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