Model No:PCA-01
Determining Planck's Constant Using Photo Vacuum Tube illustrates the basic concept of the Quantum Mechanics. It helps to understand the phenomena of photon, its energy, frequency, etc. This product is mainly used to determine the fundamental constant of Quantum Mechanics called “Planck's constant”. It is an effective and easy way to determine this constant. For the invention of Planck's constant Max Planck is awarded by Nobel Prize in 1918. The setup consists of Photo Vacuum Tube, glass filters of different color, Variable DC Supply, digital voltmeter and ammeter. Using this setup we can also calculate the energy of photon. Planck's constant relates the energy of light photons to their frequency.
The set is complete in all respect, no additional accessory required. Determining Planck`s Constant using Photo Vacuum Tube
Features
THE APPARATUS CONSIST OF THE FOLLOWING :
Technical Specifications
1. Photo Sensitive Device : Vacuum photo tube.
2. Light source : Halogen tungsten lamp 12V/35W.
3. Color Filters : 635nm, 570nm, 540nm, 500nm & 460nm.
4. Accelerating Voltage : Regulated Voltage Power Supply,
5. Current Detecting Unit : Digital Nanoammeter
It is high stability low current measuring instrument
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 filter, a focus lense is fixed in the back end.
The set is complete in all respect, no additional accessory required.
Typical graph of V0 (stopping potential) as a function of n0 is given below.
Note : Specifications are subject to change without any prior notice.
