Article October 9, 1902 Issue

The Cause of Lightning

with contributions from Nathaniel Peabody Rogers

Exchange

In the annual report of the United States Weather Bureau, condensation is credited with a large share in its production. When small, feebly charged particles of mist are welded together, as it were, into raindrops, since the potential increases as the square of the mass, a high tension may easily be developed. Ten drops, each charged to one thousand volts, will thus produce one drop charged to one hundred thousand volts. As soon as drops begin to form at the beginning of a storm, the relatively small tension of the atmospheric charges soon becomes enormously multiplied, and disruptive lightning discharges are the result.

Exchange.

Humanity wants precious few books to read, but the great living, breathing, immortal volume of Providence. Life,—real life,—how to live, how to treat one another, and how to trust God in matters beyond our ken and occasion,—these are the lessons to learn, and you find little of them in libraries.—Nathaniel Peabody Rogers.

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