Principle
A photocell is illuminated with monochromatic light of different wavelengths from a filament lamp with interference filters. The maximum energy of the ejected electrons in the photo-cell depends only on the frequency of the incident light, and is independent of its intensity. The stopping voltage Uo at different light frequencies is determined by the U/I caracteristics of the photocell and plotted over the corresponding light frequency f. Planck's quantum of action or Planck's constant (h) is determined from this graph .
Tasks
To determine Planck's quantum of action from the photoelectric voltages measured at different wave lengths
What you can learn about
External photoelectric effect
Work function
Absorption
Photon energy
Anode
Cathode
Scope of supply
Interference filters, set of 3 / art.:08461-00 / Qty:1
Interference filters, set of 2 (blue-violet and blue-green) / art.:08463-00 / Qty:1
Experiment lamp 5 / art.:11601-00 / Qty:1
PHYWE Universal measuring amplifier / art.:13626-93 / Qty:1
Rheostat, 100 Ohm, 1.8 A / art.:06114-02 / Qty:1
Photocell for h-determination, with housing / art.:06779-00 / Qty:1
DMM with NiCr-Ni thermo couple / art.:07122-00 / Qty:2
Connecting cord, 32 A, 500 mm, red / art.:07361-01 / Qty:4
Connecting cord, 32 A, 500 mm, yellow / art.:07361-02 / Qty:1
Connecting cord, 32 A, 500 mm, blue / art.:07361-04 / Qty:3
Connecting cord, 32 A, 500 mm, black / art.:07361-05 / Qty:2
Connecting cord, 32 A, 1000 mm, blue / art.:07363-04 / Qty:1
PHYWE power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A / art.:13506-93 / Qty:1
A photocell is illuminated with monochromatic light of different wavelengths from a filament lamp with interference filters. The maximum energy of the ejected electrons in the photo-cell depends only on the frequency of the incident light, and is independent of its intensity. The stopping voltage Uo at different light frequencies is determined by the U/I caracteristics of the photocell and plotted over the corresponding light frequency f. Planck's quantum of action or Planck's constant (h) is determined from this graph .
Tasks
To determine Planck's quantum of action from the photoelectric voltages measured at different wave lengths
What you can learn about
External photoelectric effect
Work function
Absorption
Photon energy
Anode
Cathode
Scope of supply
Interference filters, set of 3 / art.:08461-00 / Qty:1
Interference filters, set of 2 (blue-violet and blue-green) / art.:08463-00 / Qty:1
Experiment lamp 5 / art.:11601-00 / Qty:1
PHYWE Universal measuring amplifier / art.:13626-93 / Qty:1
Rheostat, 100 Ohm, 1.8 A / art.:06114-02 / Qty:1
Photocell for h-determination, with housing / art.:06779-00 / Qty:1
DMM with NiCr-Ni thermo couple / art.:07122-00 / Qty:2
Connecting cord, 32 A, 500 mm, red / art.:07361-01 / Qty:4
Connecting cord, 32 A, 500 mm, yellow / art.:07361-02 / Qty:1
Connecting cord, 32 A, 500 mm, blue / art.:07361-04 / Qty:3
Connecting cord, 32 A, 500 mm, black / art.:07361-05 / Qty:2
Connecting cord, 32 A, 1000 mm, blue / art.:07363-04 / Qty:1
PHYWE power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A / art.:13506-93 / Qty:1
Properties
- PP2510402
- P2510402