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natm

LED current-voltage characteristic
(an approximate determination of Planck's constant)

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Suitable for:

Elementary School
demonstration of electroluminescent phenomenon and function of LED
Secondary School
in addition: volt-ampere characteristics for different colors of LED, determining of the static and dynamic serial (differential) resistance
University
in addition: relationship between the threshold voltage and the radiated frequency (wavelength) of the light emitted - estimation of Planck's constant
experiment CECIL

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