Concave and Convex Lens Experiment
18:13
Convex and Concave Lenses
5:51
Defects of vision and their correction - How do spectacles work?
13:58
Concave and Convex Mirrors
13:51
Dispersion of Light
31:33
O Mais Antigo Problema Não Resolvido da Matemática
18:25
A Pergunta do SAT que Todos Erraram
20:25
Spherical Mirrors
23:51