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spontaneous change
a change that will occur because of the nature of the system, once it is initiated
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  January 26 in chemistry
  1881 - Claude S. Hudson born: sugar chemistry; an ACS Award in Carbohydrate chemistry is named after him.
  1911 - Polycarp Kusch born: magnetic moment of the electron; Nobel Prize (physics), 1955.
  1939 - Niels Bohr reported the discovery of nuclear fission by Otto Hahn and Fritz Strassman, and its interpretation by Lise Meitner and Otto Frisch, to the Fifth Washington Conference on Theoretical Physics.
   sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com

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