Description

The planck’s constant apparatus functions as a
ready-built circuit for the measurement of the
photoelectric effect. Ideally used in conjunction
with the Picoammeter. Inside the unit are a
caesium antimony cathode, a D/C power supply
with a potentiometer to provide a variable
retarding voltage to the photoelectric circuit and
a digital display showing the retarding voltage.
6 Different coloured lenses are provided to vary
the value of ‘f’. A 4mm to UHF lead is included for
connecting the picoammeter to the apparatus.
(When using with the Picoammeter, a UHF
to UHF lead is required – please request this
alternative lead when ordering).