Gossen MetraWatt lunasix - Technical Appendix; The LUNASIX Principle

t
n
The
LUNASIX Principle
Unlike conventionol
exposure
meters whose
photoelectric
cell consists
of o selenium
element, the
LUNASIX
hos o
photo
resistor
(photo-conduclive
element) ond is
powered
by
2 liny
mercury botteries. While o
selenium
element
converis light
into
electric
energy, the
photo
resistor merely chonges
its
conductivity
in
the
presence
of light.
The
electricol
energy
which
powers
the
precision
mechonism
of
the LUNASIX
to deflect the indicotor
needle
is
here supplied
by botteries.
Photo-conductive
cell
Diogrom
of the
LUNASIX
Resistonce
for
colibroting
Technicol
Appendix
37