Happy belated or early birthday to Isaac Newton 🎂

Happy belated or early birthday to Isaac Newton - depending on what calendar you are using pic.twitter.com/f4f7n7rOOp

— 🎼AdagioForStrings🎻 (@adagioforstring) December 28, 2018

And more alt code for math notations from Jujjavarapu, H. (2014, November 9). "Windows - Alt Key Numeric Codes of All including Math, Calculus , Language,Accents ,Foreign codes ...[ up to mouse 50 scrolls content ]". Retrieved December 28, 2018, from http://technoworld007.blogspot.com/2013/06/windows-alt-key-numeric-codes-of-all.html