Super-conduction occurs when the conductor of electricity, whether big or small, has no resistance.

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The metal, an excellent conductor of electricity, is found in the thin membranes behind the on-off buttons in most electronics.

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He points to gold - a resilient conductor of electricity - which shows clearly in the connecting prongs of a laptop hard drive.

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In this invisible world, tiny particles of gold melt at temperatures several hundred degrees lower than a large nugget, and copper, which is normally a good conductor of electricity, can become resistant in thin layers in the presence of a magnetic field.

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Think of it as a sheet of chicken-wire that is just a single atom thick, but also lightweight, strong, airtight, stretchable, transparent and an excellent conductor of both electricity and light.

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The electrons from the stressed rock cannot follow the holes, because granite is not a very good conductor of this more usual form of electricity.

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