Featured project - Homemade spectroscope by Tng Ray Kye by User4 UAT - Sunday, 9 August 2020, 1:22 PM Number of replies: 0 https://uatyoungscientist.sscglobal.com.sg/pluginfile.php/2218/mod_forum/post/407/Ray%20Kye_Task15.mp4 Permalink