Determining Planck’s constant - Recording the current-voltage characteristics, selection of wavelengths using light-emitting diodes, with Sensor-CASSY

VP6.1.4.6
Determining Planck’s constant - Recording the current-voltage characteristics, selection of wavelengths using light-emitting diodes, with Sensor-CASSY
Determining Planck’s constant - Recording the current-voltage characteristics, selection of wavelengths using light-emitting diodes, with Sensor-CASSY Diagram current vs. reverse voltage for different light wavelengths (P6.1.4.6)
Determining Planck’s constant - Recording the current-voltage characteristics, selection of wavelengths using light-emitting diodes, with Sensor-CASSY

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Description

In the experiment P6.1.4.6, the light of different colored light-emitting diodes shines one after the other onto the photocathode of a vacuum photocell. The countervoltage of the anode is varied and the resulting current is measured with high sensitivity. The variation of the characteristic curves under irradiation with different wavelengths leads to the determination of Planck's constant h.
Measurement and evaluation are carried out with the Sensor-CASSY.

Components of equipment sets

1 55873 Table housing with photocell LD
1 558761 LED with holder, 380 nm LD
1 558762 LED with holder, 407 nm LD
1 558763 LED with holder, 442 nm LD
1 558764 LED with holder, 504 nm LD
1 558765 LED with holder, 554 nm LD
1 52182 Voltage Source -5…5 V/0.1 mA LD
2 459096  4  Cable USB (USB Type A - Mini-USB) LD
1 459095  4  Plug-in power supply USB 5 V DC (A socket) LD
1 5240402 pA Sensor S LD
1 524013  8  Sensor-CASSY 2 LD
1 524220  4  CASSY Lab 2 LD
1 50102  8  BNC cable, 1 m LD
2 500421  4  Connecting lead 19 A, 50 cm, red LD
2 500422  4  Connecting lead 19 A, 50 cm, blue LD
additionally required:
PC with Windows XP/Vista/7/8/10 (x86 or x64)
1 5208102 * Virtual experiment for the determination of Planck's constant LD

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

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