Category Archives: How can waves explain the behaviour of light?

Diffraction & interference podcast

Diffraction, Diffraction through gaps, Interference patterns – two sources, Calculating interference patterns, Calculating interference patterns – directly between sources Calculating interference patterns – in front of one source. Download the notes. Download the videos. Links: pHET Wave interference Interference of … Continue reading

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Making music podcast

Standing waves in strings, Speed of waves in strings, Standing waves in strings – other harmonics, Beats, Open ended pipes, Open ended pipe harmonics, Closed pipes, Closed pipes harmonics, Harmonics & timbre, Spectral analysis Download the notes. Download the video.

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Sound waves podcast

Sound waves, Wave equations, Speed of sound, The Ear, Speed of sound, Sounds are waves, Intensity, Pitch, Timbre. Download the notes. Download the video. Links: http://www.walter-fendt.de/ph14e/stlwaves.htm http://en.wikipedia.org/wiki/Ear

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Light, waves and colour quiz

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Vsauce – What Is The Speed of Dark?

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Vsauce – How Much Does a Shadow Weigh?

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The Chart of Electromagnetic Radiations

The Lawrence Livermore labĀ posted this gorgeous old posterĀ of the electromagnetic spectrum onto its Flickr page. It’s an amazing artifact of scientific education from 1944, complete with images of retro radio equipment, hospital radium rays and one of the first commercially … Continue reading

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Light waves: Polarisation & Colour podcast

What is light?, The electromagnetic spectrum, Waves, Wave equations, Light as electromagnetic radiation, Polarisation, Colour, Colour addition, Colour subtraction, Interference & structural colour Download the notes. Download the video.

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PhET – Bending of light simulation

Explore bending of light between two media with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows. Click to Run An essential for … Continue reading

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Interference of two circular or spherical waves simulation

One of the many great learning objects from Walter Fendt (http://www.walter-fendt.de/ph14e/index.html).

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