Theodor Wilhelm Engelmann
German physiologist (1843-1909) · Doctors · Died at 65 · Born 183 years ago today
Theodor Wilhelm Engelmann was a German botanist, physiologist, microbiologist, university professor, and musician whose 1882 experiment measured the effects of different colors of light on photosynthetic activity and showed that the conversion of light energy to chemical energy took place in the chloroplast.
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