Used with
permission of Maiken Naylor, University at Buffalo, Buffalo, NY, USA,
http://ublib.buffalo.edu/libraries/units/sel/exhibits/stamps
Like Eve and Snow White,Isaac Newton (1642-1727) was the alleged victim of an apple, but with more positive results: the law of gravitation which not only applies to apples falling from trees but also describes the relationship of mutual attraction between planets and celestial bodies in the universe. On the 300th anniversary of the publication of his Principia Mathematica, Great Britain issued this set of commemoratives. Planetary motion according to the inverse square law and optical refraction are shown on two of the stamps. Newton is also considered the inventor of the calculus at the same time as Leibniz developed his version of the calculus; understandably, the German stamp honoring Newton features his Optics instead.)