Planck's Constant with LEDs - Analysis of the experiment to estimate Planck's constant
Автор: A Level Physics HQ
Загружено: 2021-02-01
Просмотров: 3459
Описание:
Analysis of the results collected in the experiment to estimate Planck's constant. In video 1 threshold voltages across LEDs were measured to provide a way of measuring the amount of electrical energy used to emit photons of known wavelengths. In this video the results are analysed with the aid of a spreadsheet to estimate Planck's constant.
Video 1 is available here: • Planck's Constant - Experiment to Estimate...
You can do the analysis yourself with this worksheet to guide you through the steps: https://www.tes.com/teaching-resource...
Note, this video contains some intermediate / advanced spreadsheet techniques to aid presentation of data in tables and to automate common calculations. This includes presenting data with scale factors, calculation of a gradient and y-intercept.
The spreadsheet is available here: https://www.tes.com/teaching-resource...
Relevant concepts: quantum physics, photons, wavelength, frequency, LEDs, electron kinetic energy.
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