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00:09:00

Quantifying sound

by Joe Wolfe
Quantifying sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1824 views
Rating:

Frequency, amplitude, envelope and spectrum affect pitch, loudness and timbre. All are discussed and quantified here.

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00:13:00

How to film the Earth from space

by Alex Baker
How to film the Earth from space
for All ages,
Lectures | All ages | 13 years ago | 1902 views
Rating:

Two University of Sheffield students have recorded a video of the Earth from the edge of space, using homemade equipment and on a shoestring budget.

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00:10:00

The Doppler effect

by Joe Wolfe
The Doppler effect
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 2183 views
Rating:

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

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00:09:00

Sound

by Joe Wolfe
Sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1727 views
Rating:

Sound is a longitudinal wave of variations in pressure and density. We derive and measure its speed.

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00:06:00

Travelling waves II

by Joe Wolfe
Travelling waves II
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1830 views
Rating:

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

by Joe Wolfe
Travelling waves I
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1997 views
Rating:

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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00:09:00

Oscillations

by Joe Wolfe
Oscillations
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1608 views
Rating:

Inertia and restoring forces can, with low friction or damping, lead to oscillations and resonance. We analyse the mechanics of vibrations.

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00:12:00

Gravity

by Joe Wolfe
Gravity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1731 views
Rating:

The inverse square law explains planetary motion - and apples falling. Newton's law, measuring G, calculating orbits.

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00:10:00

Rotation

by Joe Wolfe
Rotation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1481 views
Rating:

Torques produce angular acceleration, moment of inertia 'resists' it. Rotational kinetic energy and angular momentum.

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00:06:00

Prehistoric Pin-up

by Maria Malina
Prehistoric Pin-up
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 2492 views
Rating:

A carved female figurine dating to at least 35,000 years ago has been recovered from caves in the Hohle Fels region of Germany. The figure represents the oldest figurative art yet discovered. In this film the authors describe the importance of their ....

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00:10:00

Momentum

by Joe Wolfe
Momentum
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1506 views
Rating:

p=mv. If external forces are zero, momentum is conserved. In collisions, energy may be conserved (elastic) or not (inelastic).

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00:08:00

Centre of mass

by Joe Wolfe
Centre of mass
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1841 views
Rating:

In finite objects, the total external force equals the total mass times the acceleration of a point called the centre of mass.

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