"Bright light too close to bedtime can make it hard to fall asleep," Arnedt says. That's because dimness signals the biological clock that it's time to wind down, while bright light says "daytime!"

“睡前光线过强也会影响睡眠，”阿内德特说，这是因为弱光会给我们的生物钟发出信号“该休息了”，而强光发出的信号则是“白天到了！”

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With bright light therapy, SAD sufferers sit at a bright light box for 30 minutes at breakfast time.

运用光照疗法，患者需要在吃早餐的时候坐在一个光线强烈的盒子前长达30分钟。

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Every night I pass by my neighbor's window, I can see the bright light through it. The light looks especially bright coming from the deep dark night.

每晚路过邻家，我都能望见那透过窗户的明亮灯光。在漆黑的深夜里，灯光越发显得明亮。

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How I wished I had the power to enter that bright light and float with her through those beautiful forests.

VOA: special.2009.07.25

The Impressionists used bright colors, rough brush strokes and thick paint to show light and movement in its many forms.

VOA: special.2009.07.12

In "Family of Man," a dark-haired, light-eyed woman with a bright blue head covering looks intensely at something hidden from view.

VOA: special.2009.11.20

We need to draw a line under this and he has, his record shows that he's been far too willing to drag his feet on issues like transparency, freedom of information and really shining that light, that bright light of scrutiny on what MP's do with taxpayers' money.

BBC: The Speaker must go

But it is at night that the mosque glows - its 82 domes light up like dozens of bright light bulbs in the dark sky.

BBC: UAE��s grandest mosque

Seeking out day light at certain times, and avoiding bright light at other times, are some of the main strategies researchers recommend for resetting the body clock faster.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist