friday science bit - scientists 'stop' light, for a bit

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King of Byblos
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from nature
"It sounds like a conjuring trick. You shine a light into a gas, and the light gets swallowed. Then you pump the gas into another container, say the magic words, and the light comes out again."
http://www.nature.com/news/2007/070205/ ... 205-8.html

i have always been a fan of science and this is just great.
basically cool matter to such an extent that it becomes 'undifferentiated'.
shine light at at in such a way that the cool matter 'records' the light.
A WHILE LATER UNDER CERTAIN CONDITIONS
warm the cold matter with a laser and the initial beam pops out again.

no use but great fun at parties [in a h2g2 kina way]
"Somehow it seems to fill my head with ideas – only I don't exactly know what they are!"
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