Kelvin, William Thomson (1st Baron)

—Born_ 1824, died 1907. A noted British physicist, electrician and inventor. After completing his education at Glasgow and Cambridge, he became profe or of natural philosophy, first at Cambridge, then at Glasgow University, serving in the latter capacity for over fifty years. During the period of laying the first Atlantic cables, 1857-1866, already enjoying the reputation of being England’s greatest electrician, he was called upon to lend his knowledge _ to a ist in the project. At this time he invented the mirror galvanometer and the siphon recorder. After this he was engaged in several cable laying undertakings for a period of ten years. Among his notable inventions, in addition to the reflecting galvanometer and siphon recorder, may be mentioned the compensating mariners’ compa , a tidal gauge, a tide predicter and the deep sea sounder, but his greatest work was done in connection with electric measurement devising measuring instruments of great precision for the various electric quantities. He received high honors in England, America and elsewhere, and as the greatest final honor his country could bestow, he was buried in Westminster Abbey.