Plancks Constant Experiment to Estimate the Value of Plancks Constant

YOUR LINK HERE:

http://youtube.com/watch?v=JZ7XW-BfPa4

In this video a range of seven LEDs are used to investigate the relationship between photon energy and frequency so that a value for Planck's constant can be estimated. • There is a worksheet that accompanies this experiment so you can attempt the analysis yourself. • Get it here: https://www.tes.com/teaching-resource... • In the follow up video ( • Planck's Constant with LEDs - Analysi... ) I analyse the results and calculate the value of Planck's constant yielded by the data. The spreadsheet used for analysis is available here: https://www.tes.com/teaching-resource... • Heads up: the value of Planck's constant obtained in this experiment is an estimate and as you will find my value is very different to the data book value. It's quite bad on one level, but on another it may be useful for evaluation! * • Experiments about quantum concepts, like this one, are mandatory practicals for many physics specifications. So this is good practice for OCR physics A, AQA A-Level physics, Edexcel A-Level physics, CPAC, PAG, practical endorsement. • Relevant concepts: Planck's constant, quantum physics, LEDs, photons, electrons and potential difference.

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