phototropy
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phototropy — pho·tot·ro·py … English syllables
phototropy — pē noun ( es) Etymology: International Scientific Vocabulary phot + tropy : phototropism 2 … Useful english dictionary
Photochromism — is the reversible transformation of a chemical species between two forms by the absorption of electromagnetic radiation, where the two forms have different absorption spectra. [ [http://pubs.acs.org/journals/chreay/thematic/00/photo.html Chemical … Wikipedia
MARCKWALD, WILLY — (1864–1950), German organic chemist. Marckwald was born in Jakobskirch, Silesia, and was professor at Berlin University from 1899. He was also director of the chemistry department of the university s physico chemical institute. In 1910 he was… … Encyclopedia of Judaism
