59 results found for physics

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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 | 15 years ago | 1770 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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00:05:00

Light Beam

by Jonathan Hare
Light Beam
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1944 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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00:07:00

Potato Battery

by Jonathan Hare
Potato Battery
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 2743 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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00:04:00

Shake-a-Gen

by Jonathan Hare
Shake-a-Gen
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 1734 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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00:04:00

Seawater Battery

by Jonathan Hare
Seawater Battery
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 3157 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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00:03:00

Three Windmills

by Jonathan Hare
Three Windmills
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 1659 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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00:02:00

Parabolic Light Collectors

by Jonathan Hare
Parabolic Light Collectors
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 6045 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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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 | 15 years ago | 9778 views
Rating:

A short video explaining how to measure temperature.

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00:10:00

Measuring Temperature

by John Murrell
Measuring Temperature
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1623 views
Rating:

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00:10:00

Temperature Scales

by John Murrell
Temperature Scales
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1520 views
Rating:

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

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00:01:00

Volume Changes with Temperature

by John Murrell
Volume Changes with Temperature
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1338 views
Rating:

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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 | 15 years ago | 1394 views
Rating:

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00:02:00

Dry Ice and Wet Ice

by John Murrell
Dry Ice and Wet Ice
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 3482 views
Rating:

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00:01:00

Why Does Ice Float?

by John Murrell
Why Does Ice Float?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 5073 views
Rating:

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00:03:00

What is Matter? Solids, Liquids and Gases

by John Murrell
What is Matter? Solids, Liquids and Gases
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 10964 views
Rating:

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00:05:00

Flexibility, Elasticity, Heat Conduction

by John Murrell
Flexibility, Elasticity, Heat Conduction
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 2295 views
Rating:

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00:04:00

Heat Conduction

by John Murrell
Heat Conduction
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 4232 views
Rating:

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00:02:00

Electrical Conduction

by John Murrell
Electrical Conduction
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1880 views
Rating:

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00:01:00

Hardness

by John Murrell
Hardness
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 2175 views
Rating:

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00:03:00

Piezoelectricity

by Jonathan Hare
Piezoelectricity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1941 views
Rating:

Some minerals such as quartz can produce electricity simply by squeezing or bending them - these are called piezoelectric crystals. Here is a simple and cheap demonstration you can do.

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00:02:00

The Geiger Counter

by Jonathan Hare
The Geiger Counter
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1763 views
Rating:

Although essentially a very simple device the Gieger Counter is an exquisitely sensitive detector of ionising radiation. It can detect a single particle. Here we demonstrate its use in detecting radiation from minerals and describe in simple terms ho....

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00:08:00

The Quest for The Higgs Particle

by Martinus Veltman
The Quest for The Higgs Particle
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1283 views
Rating:

A Breathtaking Journey into the Innermost Structure of our Universe.  Runner up: Best use of Animation and Best Short Documentary for the 2002 International Festival of Cinema and Technology.

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00:02:00

Hunting for Higgs – Why Build the Large Hadron Collider?

by Alom Shaha
Hunting for Higgs – Why Build the Large Hadron Collider?
for All ages,
Lectures | All ages | 15 years ago | 1358 views
Rating:

This short documentary explains why the Large Hadron Collider was built and what scientists are using the collider to look for.

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00:03:00

The Mystery of the Missing Mass

by Tara Shears
The Mystery of the Missing Mass
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1470 views
Rating:

Dr Tara Shears explains why scientists are convinced that Dark Matter exists and how a new experiment called the Large Hadron Collider might finally tell us exactly what this mysterious missing mass is made of.

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