10 results found for 11-14-year-olds

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Hare Electrical Generator 00:04:00

Electrical Generator

by Jonathan Hare
Electrical Generator
for 11-14 and upwards,
Lectures | 11-14 and upwards | 5 years ago | 960 views
Rating:

This short video shows one of the demonstrations for the Physics SEPNet exhibition - "Who will keep the lights on?" which travelled around the southern UK from February 2009.  We describe and explain the electrical generator demonstration which Jona....

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Hare - The Transistor 00:03:00

How does a transistor work?

by Jonathan Hare
How does a transistor work?
for 11-14 and upwards,
Lectures | 11-14 and upwards | 5 years ago | 1648 views
Rating:

A short video explaining how transistors work.  At the heart of our high-tech society with radios, mobile phones, computers and space exploration are tiny electronic components called transistors.  They have revolutionised electronics and in the pr....

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Hare Mobile Phone 00:04:00

Mobile Phone

by Jonathan Hare
Mobile Phone
for 11-14 and upwards,
Lectures | 11-14 and upwards | 5 years ago | 1109 views
Rating:

Jonathan shows us with a cheap and simple homemade demonstration how your mobile telephone generates radio waves in order for you to use it to communicate.  As you will see you can use this method to explore many aspects of your mobile phone!

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Hare - Paper Windmills 00:09:00

Paper Windmills

by Jonathan Hare
Paper Windmills
for 11-14 and upwards,
Lectures | 11-14 and upwards | 5 years ago | 2675 views
Rating:

Jonathan makes some simple paper windmills/turbines and experiments with a simple generator to power house hold devices such as torches, calculators and even a radio.

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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 | 1501 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 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 | 1967 views
Rating:

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 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 | 1070 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 - Simple Electrical Generator 00:06:00

Simple Electrical Generator

by Jonathan Hare
Simple Electrical Generator
for 11-14 and upwards,
Lectures | 11-14 and upwards | 5 years ago | 1001 views
Rating:

With some simple circuitry and a homemade hand powered generator Jonathan makes AC and DC electricity that could be used for charging a mobile phone or attaching to a wind turbine.

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Hare - Solar Cells 00:06:00

Solar Cells

by Jonathan Hare
Solar Cells
for 11-14 and upwards,
Lectures | 11-14 and upwards | 5 years ago | 5365 views
Rating:

A short video on solar cells explaining with accompanying information sheet. How they work and how Jonathan uses solar power at home.

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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 | 970 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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