Planck'S Constant Apparatus Advanced Model

The set-up is complete in all respect, no additional accessory required

Photo Sensitive Device	Vacuum photo tube
Light source	Halogen tungsten lamp 12V/35W
Colour Filters	635mm. 570nm, 540nm, 500nm & 460nm.
Accelerating Voltage	Regulated Voltage Power Supply
Output	±15V continuously variable
Display	3½ digit 7-segment LED
Accuracy	+0.2%
Current Detecting Unit:	Digital Nanoammeter
Power Requirement	220V± 10%, 50Hz or 110V± 10%, 60Hz as required.
Optical Bench	The light source can be moved along it to adjust distance between the light source and the phototube,scale length is 400mm. A tube is provided to install colour filter and a focus lens is fixed in the back end.