59 results found for physics

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Tonomura 2 00:55:00

The Quantum World abserver by Electron Waves

by Akira Tonomura
The Quantum World abserver by Electron Waves
for 18-22 and upwards,
Lectures | 18-22 and upwards | 10 years ago | 1197 views
Rating:

Dr. Tonomura is a world renowned pioneer and authority in the field of electron holography, for which he has received many national and international recognitions. He is recognized for his contributions in the development of electron holography, the ....

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Hare light-sound 00:05:00

Light Beam

by Jonathan Hare
Light Beam
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 966 views
Rating:

Light is reflected off a flexible shiny surface fixed to the end of a plastic tube. When one speaks into the tubes sound vibrations pass down the tube and make the surface vibrate. The reflected light is therefore sent off from the surface in a con....

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Hare Potato battery 00:07:00

Potato Battery

by Jonathan Hare
Potato Battery
for 11-14 and upwards,
Lectures | 11-14 and upwards | 10 years ago | 1400 views
Rating:

When two different types of conductors are pushed into a potato chemical reactions take place charging them up - we have a simple electrochemical cell. A potato, zinc screw and carbon rod produce about 1V. We experiment joining a few of these cells u....

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Hare shake a gen 00:04:00

Shake-a-Gen

by Jonathan Hare
Shake-a-Gen
for 11-14 and upwards,
Lectures | 11-14 and upwards | 10 years ago | 1006 views
Rating:

This is a simple yet effective demonstration of electricity generation. 500 turns of wire are wound onto a 35mm film can and the two ends are attached to an LED light. A strong magnet is placed in the can and the lid fixed back in place. The generato....

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Hare seawater battery 00:04:00

Seawater Battery

by Jonathan Hare
Seawater Battery
for 11-14 and upwards,
Lectures | 11-14 and upwards | 10 years ago | 1844 views
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When two different metals are placed in a salt solution (an electrolyte) the chemistry produces a voltage. This is called a cell. By wiring up a number of these cells we can make a battery and use it to power electrical circuits.

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Hare windmills 00:03:00

Three Windmills

by Jonathan Hare
Three Windmills
for 11-14 and upwards,
Lectures | 11-14 and upwards | 10 years ago | 893 views
Rating:

Converting wind power into electricity seems like an ideal way of helping to solve our energy problems. However, the power generated by a windmill is dependent on the wind speed. If the wind drops to half its speed there is as little as an 1/8th of t....

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Hare parabolic 00:02:00

Parabolic Light Collectors

by Jonathan Hare
Parabolic Light Collectors
for 11-14 and upwards,
Lectures | 11-14 and upwards | 10 years ago | 5365 views
Rating:

Parabolic surfaces can be used to concentrate energy for example to focus sunlight to heat things. Using an old World War II spot light mirror we demonstrate how easy it it is to concentrate enough energy to cause combustion. Finally, we show how to ....

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Murrell Temperature and States 00:04:00

Temperature and States of Matter

by John Murrell
Temperature and States of Matter
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 6807 views
Rating:

A short video explaining how to measure temperature.

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Murrell temperature 2 4min 00:10:00

Measuring Temperature

by John Murrell
Measuring Temperature
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 963 views
Rating:

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Murrell temp scale 00:10:00

Temperature Scales

by John Murrell
Temperature Scales
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 886 views
Rating:

John Murrell explains scales and colour changes with temperature, boiling and melting,

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Murrell temp vol 00:01:00

Volume Changes with Temperature

by John Murrell
Volume Changes with Temperature
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 681 views
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Murrell sublimation 00:02:00

Some Materials Do Not Have Liquid Form

by John Murrell
Some Materials Do Not Have Liquid Form
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 848 views
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