Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...
Class practical: Students use a diffraction grating as a tool for observing the spectra from a variety of light sources.
Class practical: Producing a simple spectrum by dispersion of light.
Demonstration: Using a spectrometer to see absorption lines.
Demonstration: Using a spectrometer to observe the absorption lines formed when white light passes through sodium vapour.
Demonstration: Mixing coloured light and observing coloured objects in that light.
Demonstration: Class demonstration of a spectrum, and the appearance of coloured objects in coloured light.
Class practical: This is a recreation of Herschel’s experiment, published in 1800, in which he discovered infra-red radiation...
Demonstration: A class demonstration of the spectrum.
Class practical: Using prism, needle and sunlight to observe a spectrum.
Demonstration: Observing the spectra from a variety of light sources.
Demonstration: Using filters to produce coloured lights and observe coloured objects.
This experiment can be used when introducing the electromagnetic spectrum. It shows that there is a form of radiation beyond...
Recognising and celebrating outstanding contributions to the field of physics education.