http://histoptica.org/apuntes-de-optica/lentes/lentes-minerales/
http://instrumentacaouem.blogspot.com.br/2012/11/experimentos-com-lentes-de-plastico-pet.html
http://www.magodafisica.com.br/videos/do-mago
http://www.magodafisica.com.br/video/do-mago/luz-e-cores/21
http://www.magodafisica.com.br/video/do-mago/visualizando-a-refracao/39
http://phet.colorado.edu/sims/geometric-optics/geometric-optics_en.html
http://phet.colorado.edu/sims/vector-addition/vector-addition_pt_BR.html
https://www.youtube.com/watch?v=SUqzpZJp0MM fibra óptica agua