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A good explanation of electrical resistance, why it exists and the variables that affect it including wire length, width and material.
Interactively explore the timeline of the universe.
Good revision site aimed at UK A Level standard covering resistance, ohm's law, conductivity etc
Definition and links to related information on electrical resistance.
A useful animation to demonstrate the free electron model of current flow, showing electrical resistance in the copper wire of a lightbulb.
Various applets allowing results to be taken for demonstration purposes.
A fun toy that lets you build a sledge run and then test it out. You'll need a good feel for the laws of motion to get results!
Kaufmann's experimental results on deflection of electrons in an electromagnetic field favoured Abraham's theory, not Einstein and Lorentz, but were eventually proved wrong.
Ever wondered what it would look like to microwave soap, wax crayons or even fairy lights? This virtual microwave lets you see the results without any of the mess.
Details on the observatories and the advanced technology solar telescope with results of the long term investigation of the sun and archive facilities.
Showing 1 - 10 of 127