Word: gusts
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Dates: during 1890-1899
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...just completed another still more powerful apparatus for the study of electrical force It is capable of producing sparks in air, resembling lightning flashes, of from six to seven feet in length. The discharge creates a sensation as if a window had suddenly been opened letting in a gust of wind, and sparks can be drawn from the brick walls of the room. Sparks closely resembling lightning discharges can be obtained thirty and forty feet in length through glass tubes in which the atmospheric pressure has been reduced to about two pounds and a half to the square inch...