Tag Archives: Ronald S. Fishman

Nature telling her secrets: the Kepler–Descartes connection

Ronald Fishman Chicago, Illinois, USA   Johannes Kepler (1571-1630) Nature tells us one secret in terms of another, and she may refuse to disclose one secret until another has been laid bare. – T.S. Kuhn1 In 1604, Johannes Kepler solved the problem of how light is refracted within the eye to produce an image on the surface […]

Washington and his spectacles

Ronald S. Fishman Chicago, IL, USA   “Washington as General commanding Continental Army” by John Peale. C. 1781-1790. Independence National Historical Park Collection in Philadelphia. After accepting the surrender of General Cornwallis at Yorktown, Virginia, Washington took most of the Continental Army back up to the Northeast to cover the main British army based around […]