Photo Researchers ftp March 2011

EN_00958297_0122

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caption

Friedrich Wohler (1800-1882), the German chemist. Wohler discovered the cyanates and, in 1828, showed that heating the inorganic compound ammonium cyanate gave urea. As urea is a typical animal product, this reaction was interpreted by many chemists as ending the idea of a vital force essential for the chemistry of life. Wohler collaborated with Liebig on an important study of benzaldehyde. He was the first person to isolate aluminum and beryllium, crystalline boron and silicon, and calcium carbide. He also noticed some similarities between compounds of carbon and silicon.

headline Photo Researchers ftp March 2011

created date 2011-03-24

credit EAST NEWS

source Science Source

byline New York Public Library

original transmission reference BQ0174

weight 0,89MB

size 24cm x 34cm by 300dpi

keywords - Show

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