1856 – He was born on the 9th of March in Washington, Pennsylvania. 1880 – Thomas Edison put him to work on the 12th of September at his Menlo Park, New Jersey laboratory under John Kruesi. 1884 – He left Edison and became supervisor at a plant competing to manufacture electric lamps. ..
1869 – Born on the 9th of January at Danzig, Germany. 1891 – He received his PhD on the 19th of July under Hofmann at the University of Berlin. – He discovered the theory of freezing point depression and anticipated Lewis’ octet rule. 1899 – He became Privatdozent and one of the leaders of ..
1827 – Born on the 17th of July in London. 1851 – He studied chemistry for six years under A.W. Von Hofmann at the Royal College of Chemistry, then became professor of chemistry at the Royal Military Academy. 1854 – He was appointed chemist to the War Department and chemical referee to the government. ..
1843 – Born on the 24th of July in Derby, England. 1861 – He attended the Royal Military Academy and joined the Royal Engineers. – He was a pioneer of several technical aspects of photography. – He became a chemical assistant at the Chatham School of Military Engineering. 1874 – He developed a ..