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Empire strikes back

The US Army Space and Strategic Defense Command has fired its Miracl laser at an American satellite orbiting 260 miles above the Earth. The powerful laser, an offshoot of the Strategic Defence Initiative of the 1980s, was fired twice from the White Sands Missile Range in New Mexico. The laser beam destroyed neither its target […]

Empire strikes back

Bench-top support

That was the conclusion drawn by John Enderby of Bristol University who gave a presentation on “Experimental physics in the UK: problems and promise” at the British Association‘s science festival in Leeds last month. Many of the practical discoveries made in physics come from small-scale physics labs. For example, semiconductors, lasers and holography, X-ray diffraction […]

Bench-top support

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
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