Apparatus:
various
light
sources
(
e.g.
Krypton,
Helium,
Mercury,
Sodium),
spectrometers.
Light
sources
are
stored
in
the
optics
lab.
Description:
Look
at
the
light
source
through
the
spectrometer,
ensuring
that
the
slit
on
the
right
side
of
the
screen
is
fully
illuminated.
The
characteristic
emission
spectrum
is
visible
on
the
screen.
PIRA 7B10.17