Planck's Constant with LEDs - Analysis of the experiment to estimate Planck's constant

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 - Ex...
You can do the analysis yourself with this worksheet to guide you through the steps: 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: www.tes.com/teaching-resource...
Relevant concepts: quantum physics, photons, wavelength, frequency, LEDs, electron kinetic energy.

[@marianabulhoes1687]

thank you for the quality content, man! to me anyone who understands physics is a goddamn genius lol thanks for sharing it with the world!

[@jackli5506]

awesome video, helped so much with my depth study!!!! thank you so much

[@aashikkumar8180]

thank you so much sir for your great effort...god bless you ..carry on sir

[@olivernielsen7452]

Great video :)

[@nick78698]

The reason you are so far off is because the given wavelengths are probably taken from the data sheets. The typical wavelength given in the datasheet is usually measured with a forward current of 20 mA. (Doing spectral analysis at intensities that are barely visible is really hard.

[@goldenrainbow745]

Which as level physics is easy Cambridge or edexcel?