Spectrum of hydrogen experiment using mobile phone camera (NCPQ)

This video shows several gas discharge tubes emitting bright light. The hydrogen tube is examined through varying diffraction gratings to see the characteristic lines in the visible region. Using a ruler and a phone camera, the fringe spacing can be measured and the wavelength determined. It is a great physics experiment.

Reference: New Century Physics for Queensland, Units 3 & 4, 3rd Ed, December 2018. Oxford University Press.

Filmed at Moreton Bay College, Brisbane, by Dr Richard Walding, author of New Century Physics for Queensland, 3rd ed, 2019. Oxford University Press. My thanks to Year 12 student Lauren Xecanas.
Website: seniorphysics.com/ncpq

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