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Planck S Constant Determined by Leds

Planck S Constant Determined by Leds

CAT NO: DIDACTICNPS0019

Planck S Constant Determined by Leds Description and Tender Specification:

Planck S Constant Determined by Leds.

This equipment enables to determine Planck’s constant by the measurement of the diffusion voltage of LEDs of different colours as a function of wavelength or of frequency.
It can also be used to determine wavelengths by diffraction grating, as well as the interdependences between light intensity and current and the current/voltage characteristic of LEDs.
This apparatus is provided with 6 LEDs of blue, green, yellow and red colours in three wavelengths. Cathodes come out through a common point. Resistance is used as protection and it should always be enabled before, during the operation of diodes.

TECHNICAL CHARACTERISTICS
Operating voltage: 6 Vdc
Max. current : 20 mA, (infrared) LED 100 mA
Diodes: 6 LEDs (blue, green, yellow and red in 3 wavelengths)
Wavelengths: 465 nm, 560 nm, 585 nm, 635 nm, 660 nm,950 nm
Compensation resistance: 100 ; 1 W
Connections: safety jacks of 4 mm
Dimensions: 115 mm x 115 mm
Weight: approximately 120 g

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