Apparatus:
reflection
holograms:
holograms,
spotlight
transmission
holograms:
holograms,
HeNe,
beam
expander
Description:
Reflection
holograms
can
be
passed
around
the
class
and
seen
with
standard
classroom
lighting.
Transmission
holograms
are
left
stationary,
with
the
viewer
on
the
opposite
side
of
the
hologram
as
the
laser
with
beam
expander.
PIRA 6Q10.10