What would a negative index of refraction look like?

如果折射率是负的,会发生什么事情?

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If water had a negative index of refraction, then a straw placed in a glass would appear to bend back under itself.

如果水具有负折射率，那么放在玻璃杯中的吸管似乎可能弯曲到自身下方。

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They then cascaded the negative index medium with a positive refractive index medium so that the complete nanostructure behaved as one with an index of refraction of zero.

他们将负折射率材料和正折射率材料级联起来成功实现了零折射率行为的纳米结构。

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On the other hand, continued large investment gains helped 12 charities generate a negative index number--surpluses exceeding all donations for the reporting year.

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Price returns for the Barclays Municipal 10-year Index were negative seven out of 13 years.

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The index was predicted to ease by less than two points from 5.3 in July, but in the event a sharp downturn in the expectations gauge between both private and institutional investors caused a dramatic slump in the index to negative 13.5 and the lowest reading since September 2009.

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