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Fractional charge carriers discovered

Electric charge normally comes in an indivisible unit: the charge of an electron. Indeed, quarks were thought to be the only particles with fractional charge – and today they only exist in particles that have a integer charge. But last month, two groups of physicists revealed the first direct evidence that an electric current can […]

Fractional charge carriers discovered

Superconductivity: New model goes on the block

Colin Humphreys, head of materials science at Cambridge University, disclosed his ideas at a symposium on the centenary of the discovery of the electron at Cambridge. He has submitted a paper based on his ideas to Nature. Superconducting materials lose all electrical resistance below a critical temperature; but for many years, this temperature was below […]

Superconductivity: New model goes on the block
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