95 results found for 11-14-year-olds

Bill reveals the importance of matches in the 19th century; he shares how adding phosphorous to them revolutionized life - in both good and bad ways

To learn what's inside a golf ball - and to show how clever engineers are - Bill uses a special cutter to chop one open - well more than one.

Bill examines the first transistor ever built. He explains how it works, and its impact on our world today. And, also, he even tests it out!

Armed with a pair of wire cutters Bill shows how a common thermostat reveals how good industrial designers keep track of the dimensions of a human being.

Bill shows how a transistor works by examing a replica of the first one ever build: The Bardeen-Brattain point contact transistor.

Using slow motion video Bill Hammack shows how the mechanical digital-to-analogue converter of IBM's revolutionary 'golf ball' typewriter works.

Bill uses slow motion video to show the ingenious engineering design of the apparently simple tab of a pop can.

In designing an object an engineer must choose the proper material. Never is this more important than in the 'black box' flight data recorder.

Bill takes apart a cheap watch to show how it works. He describes how a tiny quartz tuning fork keeps the time.

Bill describes how a whiffletree was used in early calculating devices to do mechanical digital to analog conversion. He shows briefly the device used in an IBM Selectric Typewriter.

To engineer an object means to make choices. Bill illustrates how the choice of having a single heating element made an engineer find a creative way to pump water with no moving parts.

Clive Oppenheimer, a vulcanologist working on the latest techniques to monitor and predict volcanic eruptions, demonstrates his work at Mount Etna, an active volcano in Sicily.nVolcanic eruptions pose a real threat to communities living nearby, and a....

A look at how the UK music industry is working with energy and climate researcher Catherine Bottrill to reduce its carbon footprint.nIn 2007 a group of influential people from the music industry formed Julie's Bicycle, an organisation dedicated to re....

A look into the research of biochemist Ceri Harrop, who specialises in respiratory medicine and developing new treatments for people with breathing difficulties.nAs part of her research at the University of Manchester, Ceri meets with athlete Wayne A....

Anjali Nayar visited a pioneering project in Madagascar that's aiming to protect one of the country's few remaining forests. It's hoped that projects like this will help curb global warming. But first, these projects must overcome the poverty and pol....

With portrait painter Peter Edwards, Sir Harry Kroto discusses his love of art and science.

Use of physiological signals for emotion recognition and human-computer interaction.

Steve's winning presentation in the Mediasite Global Outreach Challenge 2009

A short clip showing the measurement of the speed of sound over short distances.

We see smaller and smaller objects through naked eye and microscopes, from hair to atoms.

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....

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....

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.

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....