00:03:00

#### Resonance and Bridges

Abbie describes why bridges must be designed to counteract the effects of unwanted vibrations.

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00:09:00

#### Standing waves

Reflecting waves gives standing waves, which can be resonances. Standing waves on strings and in pipes and plates.

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00:10:00

#### The Doppler effect

Moving either source or receiver produces a frequency shift called the Doppler effect, which we measure and analyse.

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00:06:00

#### Travelling waves II

The wave equation and its physical origin. Power in a wave and its relation to intensity in radiation.

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00:07:00

#### Travelling waves I

In an extended medium, inertia and a restoring force can lead to waves, which reflect at boundaries, either erect or inverted.

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00:07:00

#### Diffraction and Fourier Transforms

00:09:00

#### Measuring the speed of sound

A presentation showing how to measure the speed of sound over a short distance on a laboratory table.

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