News tagged with microwave radiation

Quantum optics with microwaves

( —Physicists at ETH Zurich have demonstrated one of the quintessential effects of quantum optics—known as the Hong-Ou-Mandel effect—with microwaves, whose frequency is 100'000 times lower than that of visible ...

dateMay 08, 2013 in Quantum Physics
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Exploring the cosmic X-ray background

You are likely familiar with the cosmic microwave background. This background is a thermal remnant of the big bang. Because of the expansion of the universe, this remnant energy has a temperature of about 2.7 K, which means ...

dateSep 12, 2014 in Astronomy
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Study explains the mystery of ball lightning

(—Sightings of ball lightning have been made for centuries around the world – usually the size of a grapefruit and lasting up to twenty seconds – but no explanation of how it occurs has been universally accepted ...

dateOct 12, 2012 in General Physics
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A spiral galaxy with a secret

(—The NASA/ESA Hubble Space Telescope – with a little help from an amateur astronomer – has produced one of the best views yet of nearby spiral galaxy Messier 106. Located a little over 20 million light-years ...

dateFeb 05, 2013 in Astronomy
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