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PHOTOSYNTHESIS
Powerpoint Presentation: Photosynthesis Introduction
The Development of Ideas
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Hales |
1727 |
Plants took their nourishment in part from the atmosphere. Light energy participated in this process. |
Priestley |
1771 |
Green plants "renewed" air that was made "bad" by breathing animals or burning candles
"Renewed" air = oxygen "Bad" air = carbon dioxide |
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At this time the composition of the atmosphere was being revealed and the gases in it were being discovered.
O2 |
Scheele and Priestley |
1773 1774 |
CO2 |
Black |
1777 |
N2 |
Rutherford |
1772 |
The composition of air |
Lavoisier |
1774 |
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© Paul Billiet 2012 |