Analysis of LED data for the measurement of Planck's constant in the undergraduate laboratory

Abstract

Two measurements of Planck's constant, one based on the visible photoelectric effect and the other making use of light-emitting diodes of various colors, have been proposed for the third-year physics student undergraduate laboratory. The experimental data require various levels of analysis and interpretation, which may provide interesting activities for the students involved, notwithstanding the simplicity of the experimental setups employed.