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   xoxoxoBruce  Saturday Feb 27 11:24 PM

Feb 28th, 2016: Fun with Chemistry

No, not Walter White chemistry fun, A.T. Wilson and Melvin Calvin fun.

Quote:
Most scientists will instantly associate Calvin with the famous biochemical cycle, named in his honour, which he elucidated. In the 1950s, when Calvin carried out his work, little was known about the details of photosynthesis and the idea that carbon dioxide was the feedstock for making plants’ sugary foodstuffs wasn’t widely accepted.

Calvin set about conducting tortuously complex experiments to assess the impact of everything from light, pH, carbon dioxide and oxygen on photosynthesis. All this needed an elaborate array of instruments and Calvin’s 1955 JACS paper – kindly provided for me by Tracey Jenkin at the Worsley Chemical Library at Bristol University – has a figure showing one such set up. It looks like something a stereotypical mad scientist dreamt up and was undoubtedly exacting both to set up and use on a daily basis.


Quote:
Melvin was a serious man with little patience for jokes or pleasantries. This contrasted starkly with his graduate student A T Wilson; a bit of a practical joker. Wilson reputedly made a wager with the departmental secretary that he could sneak in a picture of a man fishing in one of the reactors in the diagram without his supervisor realising. He won his bet and the fishing man is still in the diagram. Calvin never found out.

Silly stories aside, Calvin’s work was immensely important and he received the 1961 Nobel Prize in Chemistry for it. The mechanisms of photosynthesis which he helped work out still seem magical to us today; that a plant can take literally thin air and turn it into energy-storing organic compounds is quite incredible. But interestingly we face an analogous challenge today in the shape of the seemingly impossible task of generating clean energy cheaply. It seems clear we need more chemistry heroes of at least the same calibre as Calvin to address this problem. And what with the hard work it will inevitably take, a sense of humour would probably help too.
Damn grad students.
link


Gravdigr  Monday Feb 29 06:18 PM

Quote:
Better living, through chemistry.



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