A man on the train said: "That seat is reserved." I said: "Well, it's been very forward with me." Pulled up my pants and went on my way.
Lou Sanders
Picture: BBC
Julius Lothar MeyerDied 11 Apr 1895 at age 64 (born 19 Aug 1830). (Julius) Lothar Meyer was a German chemist who discovered the Periodic Law, independently of Dmitry Mendeleyev, at about the same time (1869). However, he did not develop the periodic classification of the chemical elements as thoroughly as Mendeleyev. Meyer trained originally in medicine and chemistry. He examined the effect of carbon monoxide on blood. In 1879, Meyer compared atomic volume to atomic weight. Plotted on a graph, the curve showed the periodicity of the elements. He also established the concept of valency by indicating that a given element combined with a characteristic number of hydrogen atoms, and coined the terms like univalent, bivalent, and trivalent, based on that number.« |
