bicycle wheel spoked with elastic bands and retort support, spotlight, reflecting dish
Description:
set
the
wheel
in
its
support
on
a
tabletop,
positioning
the
spotlight
opposite
the
reflecting
dish
and
normal
to
the
spokes.
After
about
half
a
minute,
the
wheel
will
begin
to
rotate.
PIRA 4F30.70