Thomas Lomar Gray


Thomas Lomar Gray

Thomas Lomar Gray (February 4, 1850December 19, 1908) was a British engineer.

At the British-influenced Imperial College of Engineering in Tokyo, he helped John Milne and James Alfred Ewing develop the first modern seismometers in Japan from 1880 to 1895. All three men worked as a team on the invention and use of seismographs, though John Milne is generally credited with the invention of the first modern horizontal-pendulum seismograph.

Born in Lochgelly, Fifeshire, Scotland, Gray graduated in 1878 from the University of Glasgow with a B.Sc. in engineering. Shortly after graduation, he was awarded the Cleland Gold Medal from the university for "An Experimental Determination of Magnetic Moments in Absolute Measurements." In 1879 he became Professor of Telegraph Engineering in the Physical Laboratories in the Imperial University in Tokyo. In 1888, Dr. Gray was hired as Professor of Dynamic Engineering at Rose Polytechnic Institute of Technology, now Rose-Hulman Institute of Technology in Terre Haute, Indiana. He was professor and vice president of Rose Poly from 1891 through 1908. He died on December 19, 1908.


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