 1780 - Johann Wolfgang Döbereiner born: noted triads of elements with similar properties and a progression of atomic weight; catalytic action of platinum; invented instantaneous-lighting lamp (Döbereiner lamp). |
| 1818 - Max Joseph von Pettenkofer born: calorimeter for human energy changes. |
| 1867 - Olaf Kristian Birkeland born: first industrial fixing of nitrogen.
Charles Alfred Coulson born 1910: valence and bonding.
Johann Wolfgang Döbereiner born 1780: noted triads of elements with similar properties and a progression of atomic weight; catalytic action of platinum; invented instantaneous-lighting lamp (Döbereiner lamp)
Perkin Elmer incorporated, 1939.
Max Joseph von Pettenkofer born: calorimeter for human energy changes. |
| 1910 - Charles Alfred Coulson born: valence and bonding. |
| 1938 - Casein fiber patented. |
| 1939 - Perkin Elmer incorporated. |
sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com
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