L Dark nebulae not only have no light of their won, they also soak up all light.

l暗星云不仅本身不发光，而且会吸收所有的光线。

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L Glowing nebulae are named because they give off a dim, red light, as the hydrogen gas in them is heated by radiation from nearby stars.

l有一种星云叫亮星云，它们发出暗淡的红光，这种红光是因为构成星云的氢气受到附近星体的射线激发而发出的光线。

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L-3's image intensifier technology enhances laser aiming, mobility and maneuvering under very low-light conditions.

L - 3公司的影像增强技术提高了在微光条件下的激光瞄准、机动性和操作性。

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Meanwhile, the curved ceiling of the main house captures the interplay of light refracted from the L-shaped pool, and the roof's louvered panels float above a wall of windows, perching on delicate wood columns as they shelter an outdoor patio.

WSJ: The House That Gucci Built

To prepare for the show, exhibit curator Paul Martineau spent several months plowing through 1, 200 boxes of prints in a cold cinder-block room at the Herb Ritts Foundation in Hollywood, looking for shots with the L.A.-bred photographer's signature style: glowing California light, bold shadows, bare skin and film-noir settings.

WSJ: Herb Ritts at the Getty: Capturing the Soul of Fashion