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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WFC3's broad wavelength range, from ultraviolet to near-infrared, reveals starsat different stages of evolution, allowing astronomers to dissect the galaxy'sstar-formation history.

WFC3的光谱范围从紫外线到近红外线，揭示了恒星不同的演化阶段，这使天文学家得以剖析星系的恒星形成历史。

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With SDO watching the sun in a wavelength of extreme ultraviolet light, the dark moon created a partial eclipse of the sun.

据太阳动力学观测台当时的监测显示，在太阳强烈的紫外线的波长影响下，漆黑的月亮遮挡了部分强光，从而出现了日偏食。

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And when Dr Anderson injected the modified vesicles into mice and then shone ultraviolet light of a wavelength that can pass through flesh at some of them, he found the tactic worked.

ECONOMIST: Drug delivery

In 1998 chipmakers took up so-called deep ultraviolet light, which has a wavelength of 0.248 microns.

FORBES: Trick of the Light

In the late 1980s they turned to ultraviolet light, which has a shorter wavelength (0.435 microns and smaller).

FORBES: Trick of the Light