Ajit Pai @AjitPai
OTD in 1843, W.R. Hamilton was walking along a Dublin canal when he discovered 4-dimensional numbers. He carved the formulas for these "quaternions" into a bridge. Today, quaternions are applied to robotics, navigation, electric toothbrushes, and more. https://t.co/vA80eTrtuU — PolitiTweet.org