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Listed under:  Science  >  Matter  >  Atoms  >  Elementary particles  >  Photons
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Electromagnetic radiation

Do you know how radios transmit sound, or how ultraviolet light travels through the air? Listen to Bernie Hobbs explain electromagnetic radiation and discover what radios, ultraviolet light, x-rays and nuclear blasts have in common. Find out about their energy levels, how they travel from place to place, and at what speed, ...

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What is an optical dog nose?

What do you think an 'optical dog nose' is? Watch this video to find out how this technology can be used in the real world. Can you think of some other potential applications for this technology?

Interactive resource

Life without chemistry

Rebuild everyday products in a city. Test the properties of industrial materials. Choose materials suited to making items such as cars, buildings and clothing.

Interactive resource

Skateboard race [Windows version]

Help a teenager to fit new wheels for his skateboard. Test the strength and hardness of materials such as glass, aluminium and polyurethane. Choose the most suitable material.

Interactive resource

Going down and burning up

Bring the Hubble Telescope back to Earth for repairs. Build a heat shield to protect the space telescope from burning up. Choose a material that will not easily burn, melt or transfer heat.

Assessment resource

Metal munchers: assessment

Assess your ability to make predictions and explain your observations. Protect a spaceship from metal-munching aliens by identifying metals to feed to them. Perform tests on a range of everyday materials to discover which are metals. For example, test whether wool will conduct electricity. Explain which tests are most useful ...

Teacher resource

Using 'Metal munchers: assessment' - Teacher idea

This Teacher idea includes video footage showing how a teacher uses the interactive assessment object L7557 'Metal munchers: assessment' to test year 5-6 students' understanding of the properties of metals. It describes and provides access to the interactive digital resource used in the classroom, along with other relevant ...

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Disposable hypodermic syringe

This is a colour photograph showing an example of the original disposable plastic hypodermic syringe and cover, invented in Adelaide in 1949 by Charles Rothauser (1913-97). It is made of polyethylene. The shaft of the syringe is slightly yellowed but the extended plunger is white. The blue plastic needle cover has a cone-shaped ...

Teacher resource

Metal munchers: assessment: teacher guide

Use this resource with 'Metal munchers: assessment' (L7557). First, see a profile of that assessment object, which gives you some helpful background information. Then follow clear guidelines on the interpretation of student input related to performing tests on a range of everyday materials to discover which are metals. ...

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How does the retina work?

When electrons in your retina absorb photons of light they don't emit light, they cause a molecule to change shape - and that lets you see colour!

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Can photons and atoms generate laser?

Electrons around atoms can absorb and emit photons of particular colours of light – see three different atomic models explain what's going on.