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AstronomyEdit

  • Édouard Roche finds the limiting radius of tidal destruction and tidal creation for a body held together only by its self gravity, called the Roche limit, and uses it to explain why Saturn's rings do not condense into a satellite.

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MathematicsEdit

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ReferencesEdit

  1. ^ Berthold, A. A. (1849). "Transplantation der Hoden". Arch. Anat. Physiol. Wiss. Med. 16: 42–6.
  2. ^ Petrunkevitch, Alexander (1920). "Russia's Contribution to Science". Transactions of the Connecticut Academy of Sciences. 23: 232.
  3. ^ "History of Chirality". Stheno Corporation. 2006. Archived from the original on 2007-03-07. Retrieved 2007-03-12.
  4. ^ Hempel, Sandra (2006). The Medical Detective: John Snow and the mystery of cholera. London: Granta Books. ISBN 9781862078420.
  5. ^ "Walter Hunt... Dress-Pin: Specification of Letters Patent No. 6,281". United States Patent and Trademark Office. 1849-04-10. Retrieved 2011-12-05.
  6. ^ "Walter Hunt". National Inventors Hall of Fame. 2002. Archived from the original on 2011-08-05. Retrieved 2011-12-05.
  7. ^ "Letters Patent No. 6,469". Google Patents. Retrieved 2011-12-29.
  8. ^ "Britannia Bridge". Engineering Timelines. Retrieved 2014-06-10.
  9. ^ Bellis, Mary. "Bourdon Tube Pressure Gauge". Inventors. About.com. Retrieved 2014-01-19.