 1730 - Jan Ingenhousz born: early work on the phenomenon of photosynthesis, including a description of the production of oxygen by plants. |
| 1845 - Thomas E. Thorpe born: atomic weights, viscosity of liquids, and chemical analyses. |
| 1878 - Eugene C. Bingham born: plastic flow and viscosity. |
| 1947 - Thomas R. Cech born: discovered cellular role of ribonucleic acid (RNA); Nobel Prize, 1989. |
sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com
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