• Photoelectric measurement unit
• Photocell of work function of 1.5 eV
• 12W white light source
• Colour filters (680nm, 580 nm, 520nm, 480nm, 435nm


• Photoelectric measurement unit
• Photocell of work function of 1.5 eV
• 12W white light source
• Colour filters (680nm, 580 nm, 520nm, 480nm, 435nm
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