Newton Key Ring

Isaac Netwon (1642-1727). The main guy. The big cheese. The N-dog (or whatever it is you kids say nowadays). Born on Christmas day in the year Galileo died. Discoveries include: calculus (albeit also discovered independently by Leibniz and, arguably, Fermat. And Pascal. And Barrow. And Wallis.) gravitation (the apple story is a myth) and optics (which he called "opticks". Isn't that precious?). Spent his autumn years attacking Leibniz, exploring alchemy, sticking forks in his eye sockets, and shrieking at housemaids. Design based on a public domain image.