Joseph Henry Publishes "Atmospheric Electricity"
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Date: 1859
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First Smithsonian Secretary Joseph Henry publishes "Atmospheric Electricity," the fifth installment in his series "Meteorology in Its Connection to Agriculture" for the Patent Office's annual reports. It includes a discussion of three effects of lightning: its sudden repulsive impact on air and objects, especially in the direction of its passage; its attraction to tall metallic objects due to the emission of static charges by storm clouds prior to lightning strikes; and the process of lateral discharge, allowing sparks to be drawn from lightning rods even when they are well-grounded. Henry's work draws upon observations made during his years in Princeton as a physics professor at the College of New Jersey, where he observed buildings struck by lightning and interviewed witnesses to lightning strikes.
Chronology of Smithsonian History
Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu
1859
United States