Henry, Joseph
scientist, philosopher, author, was born Dec. 17, 1797, in Albany, N. Y. In 1826 he entered the Albany academy as professor of mathematics, and soon after began a series of experiments in electricity; made various discoveries in electromagnetis which were described in Silliman's Journal as early as 1831. In 1832 he was called to chair of natural philosophy in Princeton college; in 1837 visited Europe, where he remained one year, and his discoveries connected with the electro-magnet were recognized, and resulted in establishing the wonders of what is now called the telegraph. His principal writings are, Syllabus of Lectures on Physics; and Scientific Writings of Joseph Henry, 1886.
He died March 13, 1878, in Washington, D. C.