TODAY'S TICKY RIDDLES

The answer is James Dewar(U.K) in 1892.
Little about him....
Sir James Dewar FRS (20 September 1842 – 27 March 1923) was a Scottish chemist and physicist. He is probably best-known today for his invention of the Dewar flask , which he used in conjunction with extensive research into the liquefaction of gases. He was also particularly interested in atomic and molecular spectroscopy, working in these fields for more than 25 years.
Early life
James Dewar was born in Kincardine-on-Forth in 1842, the youngest of six boys. He lost his parents at the age of 15. He was educated at Dollar Academy and the University of Edinburgh, where he studied under Lord Playfair, and later became Lord Playfair's assistant. Dewar would also study under August Kekulé at Ghent.
Career
In 1875, Dewar was elected Jacksonian professor of natural experimental philosophy at the
University of Cambridge, becoming a fellow of Peterhouse.  He became a member of the Royal Institution and later, replaced Dr. John Hall Gladstone in the role of Fullerian Professor of Chemistry in 1877. Dewar was also the President of the Chemical Society in 1897 and the British Association for the Advancement of Science in 1902, as well as serving on the Royal Commission established to examine London's water supply from 1893 to 1894 and the Committee on Explosives. It was whilst he was serving on the Committee on Explosives that he and Frederick Augustus Abel developed cordite, a smokeless gunpowder alternative.
In 1867 Dewar described several chemical formulas for benzene. Ironically, one of the formulae, which does not represent benzene correctly and was not advocated by Dewar, is sometimes still called
Dewar benzene.
His scientific work covers a wide field – his earlier papers cover a wide range of topics; organic chemistry, Hydrogen and its physical constants, high temperature research, the temperature of the sun and of the electric spark, electro-photometry and the chemistry of the electric arc.
With Professor J. G. McKendrick, of Glasgow, he investigated the physiological action of light, and examined the changes which take place in the electrical condition of the retina under its influence. With Professor G. D. Liveing, one of his colleagues at Cambridge, he began in 1878 a long series of spectroscopic observations, the later of which were devoted to the spectroscopic examination of various gaseous elements separated from atmospheric air by the aid of low temperatures; and he was joined by Professor J. A. Fleming, of University College London, in the investigation of the electrical behaviour of substances cooled to very low temperatures.
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