Values & Erosion of the Development of Youth or Foreign Tourism a Boon or a Bane to India

Topics: Louis Pasteur, Microbiology, Vaccination Pages: 8 (2752 words) Published: December 11, 2012
Louis Pasteur
From Wikipedia, the free encyclopedia

Louis Pasteur|

Louis Pasteur photographed by Pierre Lamy Petit|
Born| December 27, 1822
Dole, Jura, Franche-Comté, France|
Died| September 28, 1895 (aged 72)
Marnes-la-Coquette, Hauts-de-Seine, France|
Residence| France|
Nationality| French|
Fields| Chemistry
Institutions| Dijon Lycée
University of Strasbourg
Lille University of Science and Technology
École Normale Supérieure|
Alma mater| École Normale Supérieure|
Notable students| Charles Friedel[1]|
Louis Pasteur ( /ˈluːi pæˈstɜr/, French: [lwi pastœʁ]; December 27, 1822 – September 28, 1895) was a French chemist and microbiologist who was one of the most important founders of medical microbiology. He is remembered for his remarkable breakthroughs in the causes and preventions of diseases. His discoveries reduced mortality from puerperal fever, and he created the first vaccines for rabies and anthrax. His experiments supported the germ theory of disease. He was best known to the general public for inventing a method to treat milk and wine in order to prevent it from causing sickness, a process that came to be called pasteurization. He is regarded as one of the three main founders of microbiology, together with Ferdinand Cohn and Robert Koch. Pasteur also made many discoveries in the field of chemistry, most notably the molecular basis for the asymmetry of certain crystals.[2] His body lies beneath the Institute Pasteur in Paris in a spectacular vault covered in depictions of his accomplishments in Byzantine mosaics.[3] Contents  [hide]  * 1 Early life * 2 Research career * 2.1 Molecular asymmetry * 2.2 Germ theory of fermentation * 2.3 Immunology and vaccination * 3 Allegations of deception * 4 Faith and spirituality * 5 Principal works * 6 Honours and final days * 7 Legacy * 8 See also * 9 References * 10 Further reading * 11 External links| -------------------------------------------------

Early life

The house in which Pasteur was born, Dole
Louis Pasteur was born on December 27, 1822, in Dole in the Jura region of France, into the family of a poor tanner. Louis grew up in the town of Arbois.[2] This fact probably instilled in the younger Pasteur the strong patriotism that later was a defining element of his character. Louis Pasteur was an average student in his early years, but he was gifted in drawing and painting. His pastels and portraits of his parents and friends, made when he was 15, were later kept in the museum of the Pasteur Institute in Paris. He earned his bachelor of arts degree (1840) and bachelor of science degree (1842) at the École Normale Supérieure. After serving briefly as professor of physics at Dijon Lycée in 1848, he became professor of chemistry at the University of Strasbourg,[2] where he met and courted Marie Laurent, daughter of the university's rector, in 1849. They were married on May 29, 1849, and together had five children, only two of whom survived to adulthood; the other three died of typhoid. These personal tragedies inspired Pasteur to try to find cures for diseases such as typhoid. -------------------------------------------------

Research career
Molecular asymmetry

Pasteur separated the left and rightcrystal shapes from each other to form two piles of crystals: in solution one form rotated light to the left, the other to the right, while an equal mixture of the two forms canceled each other's effect, and does not rotate thepolarized light. In Pasteur's early work as a chemist, he resolved a problem concerning the nature of tartaric acid (1848).[4][5][6][7][8]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...
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