Apparatus:
optical
rail,
laser
source,
white
light
source,
lenses,
mirrors,
polarizers,
apertures,
slits,
diffraction
gratings,
prisms
Description:
With
the
optical
rail
and
some
combination
of
its
components,
many
demonstrations
are
possible.
Colour
addition,
reflection,
refraction,
total
internal
reflection,
lens
systems,
polarization,
inverse
square
law,
apertures,
spherical
abberations,
diffraction
and
interference.