Light is an electromagnetic wave, with a longer wavelength than X-rays and ultraviolet, and a shorter wavelength than infra-red, microwaves and radio waves.

光是一种电磁波，其波长长于X光和紫外线，短于红外线、微波和无线电波。

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Humans have no direct perception of infrared rays unlike the rattlesnake which has receptors tuned into wavelengths longer than 0.7 micron.

与响尾蛇不同，人也不能直接感受到红外线。响尾蛇的感觉器可以感受波长超过0.7微米的光线。

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They last much longer than the gamma rays themselves, which means they can be pinpointed, deconstructed and dissected to reveal where they came from.

ECONOMIST: A symphony in gamma major

Midfielder Jamie Vermiglio could be out for the rest of the season after X-rays revealed his broken toe was taking longer to heal than was hoped.

BBC: Nwadike set to make Bucks debut