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Vote: | Chance favors the prepared mind. |
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Vote: | Did you ever observe to whom the accidents happen? Chance favors only the prepared mind. |
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Vote: | Do not let yourself be tainted with a barren skepticism. |
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Vote: | Fortune favors the prepared mind. |
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Vote: | In the fields of observation chance favors only the prepared mind. |
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Vote: | Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity. |
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Vote: | Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world. Science is the highest personification of the nation because that nation will remain the first which carries the furthest the works of thought and intelligence. |
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Vote: | The universe is asymmetric and I am persuaded that life, as it is known to us, is a direct result of the asymmetry of the universe or of its indirect consequences. The universe is asymmetric. |
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Vote: | There are no such things as applied sciences, only applications of science. |
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Vote: | There does not exist a category of science to which one can give the name applied science. There are science and the applications of science, bound together as the fruit of the tree which bears it. |
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Biography
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Louis Pasteur (December 27 1822 – September 28 1895) was a French microbiologist and chemist. He is known to the general public for his demonstration of the germ theory of disease and his development techniques of inoculation, most notably the first vaccine against rabies; however, he also made a major discovery in the field of chemistry, regarding asymmetric molecules and the polarization of light.
A famous quote by Pasteur:
English Translation:
Work on chirality and the polarization of light In his early work as a chemist he resolved a problem concerning the nature of tartaric acid (1849). A solution of this compound derived from living things (specifically, wine lees) rotated the plane of polarization of light passing through it. The mystery was that tartaric acid derived by chemical synthesis had no such effect, even though its reactions were identical and its elemental composition was the same.
Pasteur noticed, upon examination of the tiny crystals of tartaric acid, that the crystals came in two asymmetric forms that were mirror images of one another. Tediously sorting the crystals by hand gave two forms of tartaric acid: solutions of one form rotated polarised light clockwise, while the other form rotated light counterclockwise. An equal mix of the two had no effect on polarized light. Pasteur correctly deduced that the tartaric acid molecule was asymmetric and could exist in two different forms that resemble one another as a left- and right-hand glove resemble one another. As the first demonstration of chiral molecules, it was quite an achievement, but Pasteur then went on to his more famous work in the field of biology/medicine.
His doctoral thesis on crystallography got him a position of professor of chemistry at the Faculté (College) of Strasbourg.
In 1854, he was named Dean of the new College of Science in Lille.
In 1857, he was made administrator and director of scientific studies of the École Normale Supérieure.
...(more on Wikipedia)
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Louis Pasteur".
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