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Physics Online
Physics Online - A level
A selection of videos aimed at post 16 physics students.
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Waves - refraction and Snell's law
This video models refraction using a vehicle travelling from a concrete surface to a grass surface and shows how the forward wheel slows and so the vehicle changes direction.
A diagram is then constructed to develop Snell’s law, i.e., the angle of incidence (from air) is proportional to the angle of...
Waves - superposition
This video explains how two waves passing through each other interact through the process of superposition.
The resultant interference of waves at phase differences of 0⁰ or 360⁰ is constructive, they are additive. Whereas phase differences of 180⁰ produce destructive interference, i.e., they cancel each...
Waves - total internal reflection and critical angle
This video begins by showing a demonstration of total internal reflection (TIR) through a semi-circular glass block.
It develops an understanding of TIR by showing that as the angle of incidence (θi) increases so too does the angle of refraction (θr). Eventually, as θi is...
Waves - two source interference
This video shows how interference from two sound wave sources can produce both constructive (louder sound) and destructive (softer sound) interference patterns. A demonstration using microwaves reinforces this idea. Microwaves are generated and passed through a double slit. The resultant interference of waves is...
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| Subject(s) | Science, Physics |
|---|---|
| Age | 16-19 |
| Published | 2010 to 2019 |
| Published by | |
| Direct URL | https://www.stem.org.uk/cxexyo |
