Planck's Constant Experiment, Pc-101

We are known for manufacturing, exporting and supplying PLANCK'S CONSTANT EXPERIMENT to our clients in Roorkee, Uttarakhand, India.
Determination of PlanckAcA A s Constant and Work Function of Materials by Photoelectric Effect.
THE APPARATUS CONSIST OF THE FOLLOWING :
1. Photo Sensitive Device : Vacuum photo tube.
2. Light source : Halogen tungsten lamp 12V/35W.
3. Colour Filters : 635nm, 570nm, 540nm, 500nm & 460nm.
4. Accelerating Voltage : Regulated Voltage Power Supply
Output : (+-)5V continuously variable through multi-turn pot
Display: 3 1/2 digit 7-segment LED
Accuracy: (+-)0.2%
5. Current Detecting Unit : Digital Nanoammeter It is high stability low current measuring instrument:
Range : 1000 microA, 100 microA, 10 microA & 1 microA with 100% over ranging facility
Resolution : 1nA at 1 microA range
Display: 3 1/2 digit 7-segment LED
Accuracy: (+-)0.2%
6. Power Requirement : 220V (+-) 10%, 50Hz
7. Optical Bench : The light source can be moved along it to adjust the distance between light source and phototube. Scale length is 400 mm. A drawtube is provided to install colour filters, a focus lense is fixed in the back end.