Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...
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Demonstration: Students observe the spectrum produced when light falls obliquely on a CD.
Class Practical: A diffraction pattern showing bands of colour produced from white light.
Class demonstration: This demonstration shows that a beam of light is diffracted as it passes around a wire, highlighting the...
Demonstration: This is a simple and economic demonstration of the diffraction of light by a narrow opening, from which the...
Demonstration: A laser is used to illustrate how crystal geometry can be inferred from X-ray diffraction patterns.
Class Practical: Observing a two-dimensional diffraction pattern.
Class Practical: A simple and elegant experiment to measure the wavelength of light using a fine diffraction grating.
Demonstration: Exploring the diffraction pattern produced from white light.
Class practical: Students use a diffraction grating as a tool for observing the spectra from a variety of light sources.
Demonstration: Interesting diffraction effects seen in shadows.
Demonstration: A ray of light bends as it passes through a region of changing refractive index.
Demonstration: Investigating the formation of real images.
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