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Physics Online
Physics Online - A level
A selection of videos aimed at post 16 physics students.
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Standing and stationary waves in an open tube
Using a diagram of an open tube an explanation of possible wave patterns is built up. Firstly, the fundamental mode of vibration is drawn, followed by the second and third harmonics. For each illustration the number of waves is calculated, i.e, λ/4, 3/4 λ and 5...
Standing or stationary waves on a string
This video explains how nodes and anti-nodes are formed in standing (stationary) waves. It shows how the distance between two nodes = λ/2. A series of standing waves are drawn to show the fundamental wave and its harmonics. The number of half wavelengths for the fundamental and second,...
The equation for velocity of waves on a string
The video states that the velocity (v) of a wave moving along a string is related to the strings tension (T) and its mass per unit length (μ). The unit of tension is the Newton (N) and the unit of mass/length is kg/m.
A simple interrogation of the formula v = √(T/ μ) shows that as T increases so too does...
The wave equation
This video begins with the mnemonics Very furry lambs and Cute furry lambs.
Using a model of a railway carriage (its length, x and time taken to travel, t) the equation for velocity (v = x/t) is derived. Equating the length of the carriage to wavelength, λ and time to the period, T the...
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| Subject(s) | Science, Physics |
|---|---|
| Age | 16-19 |
| Published | 2010 to 2019 |
| Published by | |
| Direct URL | https://www-preprod.stem.org.uk/cxexyo |
