Appletons' Popular Science Monthly, December 1899: Vol. LVI, November, 1899 to April, 1900Various
Science
Appletons' Popular Science Monthly, December 1899: Vol. LVI, November, 1899 to April, 1900
Various
Science -- Periodicals; Technology -- Periodicals
Just previous to this there had been some brilliant experiments
carried on in France, and the discharge had been conveyed through
twelve thousand feet of circuit, including the acre basin of the
Tuileries, but they had not been performed as systematically, or with
the definite objects in view, as had the English experiments.
The following year the Royal Society continued its researches on a
larger scale than previously, using 12,276 feet of wire, and found
that even through that length the velocity was practically
instantaneous.
Watson urged as a theory that electrical disturbances were caused by
influx or efflux of a single electric fluid from the state of normal
electrification, thus differing from Dufay in his opinion as to the
existence of two fluids. He was led to this belief by observing that
he obtained a larger spark between two oppositely electrified bodies
than from either to the earth.
From this time on there appears upon the scene a host of workers in
this field, one of the most prominent being the distinguished
American, Benjamin Franklin. Somewhat previous to his remarkable work,
or about 1750, Boze made certain discoveries in the matter of the
surface tension of conducting liquids being diminished by
electrification, and Mowbray and Nollet ascertained that the
vegetation of flowers and of vegetating seeds was hastened by
electrifying them.
Franklin (born 1706, died 1790) made the important discovery of the
active discharge of electricity from an electrified body by points as
well as the converse of it--i. e., that electricity was rapidly
abstracted from a charged atmosphere by points. This enabled him to
increase the efficiency of the electrical machine by adding a
comb-shaped series of points to the collector of the prime conductor.
Public-domain text, read in full here on John Shaqi.
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