He proved this by letting the beam of rainbow-colored light pass through another prism. This changed the colored light back to white light.

为了证明这一点，他让一束彩虹——即有色光线通过另一个三棱镜，结果这些有色的光又变回到了白光。

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And even just the air in a clear sky blocks a huge range of the wavelengths of lights, pretty much only letting through visible light, anda smattering of infra-red and radio waves.

即便晴空万里光是空气就会挡住很大范围的光波波段，几乎只允许可见光、以及少数红外光和无线电波通过。

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The hybrid disc works by making the Blu-ray layer act like a two way mirror, reflecting enough light for Blu-ray playback, but letting enough light through for HD DVD operation.

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Structured like a tree, the new centre will have a huge canopy letting in light through the roof.

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Igzo (indium gallium zinc oxide) screens have higher translucency than standard TFT (thin film transistor) LCDs, meaning they are better at letting light pass through them.

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