Thursday, October 6, 2011

Canada Year Of Chemistry Stamp Honors John C Polanyi-Nobel Laureate Who Explained Energy Relationships In Chemical Reactions


 Canada Post Recently Released A Stamp On Nobel Laureate For Chemistry John C. Polanyi In The Year 1986

John C Polanyi portrayed on Canadian stamp was born in 1929 in Berlin,to Hungarian parents, Michael and Magda Elizabeth Polanyi. John C Polanyi  received his education in England after his family moved there. Polanyi did his university studies in Manchester University, where he obtained his B.Sc. in 1949, and his Ph.D. in 1952.

Between  1952-1954, Polanyi was a Postdoctoral Fellow at the National Research Council Laboratories in Ottawa, Canada, and from 1954-1956 Research Associate at Princeton University.

In 1956, John Polanyi served as a Lecturer at the University of Toronto where he was successively Assistant Professor (1957-1960), then Associate Professor (1960-1962) and later on Professor (1962- present). John Polanyi  was honored with University Professor title in January 1974.

John C Polanyi  along with Dudley R. Herschbach, Yuan T. Lee were awarded Nobel Prize in Chemistry  for their contributions related to  the dynamics of chemical elementary processes. They are credited with the the development of a new field of research in chemistry called reaction dynamics which has provided more clearer understanding of how chemical reactions take place.

John C Polanyi developed a new method called the infrared - (IR) - chemiluminescence method. He developed this method concurrently with the formation of the crossed molecular beam field. This method involves measurement and analysis of the extremely weak infrared emission from the product molecules in some chemical reactions. Excess energy from the reaction is deposited as internal energy in the product molecules, which after some delay emit the energy in the form of infrared light.

The image on the stamp features the current research in molecular scale printing lead by John C Polanyi.The background image features actual bromine atoms photo-imprinted on a silicon surface. The picture on the lower right shows molecules moving within the three states of a chemical reaction i.e initial state, transition state and final state . The wavy lines on the first day cover emphasize transition within a chemical reaction


First Day Cover For The International Year Of Chemistry Stamp On John C Polanyi Released By Canada Post


Pictorial Postmark For The Stamp On John Charles Polanyi Celebrating International Year Of Chemistry




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