Ajit Pai @AjitPai
OTD in 1827, William Rowan Hamilton presented the paper “Theory of Systems of Rays” at Dublin’s @RIAdawson. An important step in developing the “wave theory” of light, it later facilitated the development of quantum mechanics. https://t.co/ch55TqADfH https://t.co/axQVV4SG8U — PolitiTweet.org