• Planck's Constant Apparatus - Edulab

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  • £576.19excluding VAT

    £691.43 including VAT

  • The planck's constant apparatus functions as a ready-built circuit for the measurement of the photoelectric effect. Ideally used in conjunction with the Edu-Lab Picoammeter. Inside the unit are a caesium antimony cathode, a D/C power supply with a potentiometer to provide a variable retarding voltage to the photoelectric circuit and a digital display showing the retarding voltage. 6 Different coloured lenses are provided to vary the value of ‘f’. A 4mm to UHF lead is included for connecting the picoammeter to the apparatus.
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Technical Specification

Specifications: DC Stopping potential controlled by 10-turn potentiometer DC voltmeter with 0-19.99V LED display Filters: 6 narrow-band (FWHM bandwidth: 4-15nm), with wavelengths of 405nm,
 Female UHF socket for connection to picoammeter
Photocell: caesium antimony cathode (spectral response range 185-650nm)
 Power source: 9V PP3 battery Dimensions: 205 x 150 x 115mm (W x H x D) "

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