Culaba, I.B., Guerrero, R.A., Macabebe, E.Q.B. and Maquiling, J.T. 2005. Twenty optics experiments with a laser pointer. Proceedings of the Samahang Pisika ng Pilipinas, 23(1), SPP-2005-WS-05. URL: https://proceedings.spp-online.org/article/view/SPP-2005-WS-05.