Optics > Geometric Optics > Reflection DCS#  6A10.20
DIFFUSE AND SPECULAR REFLECTION
set up for specular reflection demo
APPARATUS
mercury arc lamp 203B
glass plate 105-72-E6
ground glass plate 105-72-E4
black paper 105-84-E6
DESCRIPTION
Turn off overhead lights and shine light on smooth glass to show specularly reflected beam on wall or ceiling.  Shine light on rough surface to show diffuse reflection.