Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...
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Class practical: Students use a diffraction grating as a tool for observing the spectra from a variety of light sources.
Demonstration: Using a spectrometer to observe the absorption lines formed when white light passes through sodium vapour.
Demonstration: Observing the spectra from a variety of light sources.
Spectra are beautiful things to see. The full spectrum of white light blazing across a screen is a surprise and a delight to...
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