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SSS 2011-04-22

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses wavelengths of blue and our sun's ab

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Elizabeth Barrett Browning (1806 - 1861) What was he doing, the great god Pan, Down in the reeds by the river? Spreading ruin and scattering ban, Splashing and paddling with hoofs of a goat, And breaking the golden lilies afloat With the dragon-fly

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Multimode Optical Fiber(S) Multimode fibers, with much wider cores than single mode fibers, allow light to enter at various angles, and reflect (bounce off of) core-clad boundaries as electromagnetic

SSS 2010-02-15

Imagine a world where sunlight can be captured to produce electricity anywhere, on any surface. The makers of thin-film flexible solar cells imagine that world too. But a big problem has been the amount of silicon needed to harvest a little sunshine.

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13Saul was thirty years old when he became king, and he reigned over Israel forty- two years. 2Saul chose three thousand men from Israel; two thousand were with him at Micmash and in the hill country of Bethel, and a thousand were with Jonathan at Gi

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VOA常速英语2008年-US Space Shuttle Atlantis Completes Mission

By Michael Bowman Washington 20 February 2008 The U.S. Space Shuttle Atlantis is back on earth after delivering a new laboratory to the International Space Station. VOA's Michael Bowman has details from Washington. Sonic booms echoed over Florida as

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The rat grinned. 老鼠龇着牙齿笑。 I'm going to make a night of it, he said. 我要来个欢乐今宵，老鼠说， The old sheep was right - this Fair is a rat's paradise. What eating! And what drinking! 老羊说得对这集市是老鼠的乐

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1. There will be occasional showers in southeast England, some of them perhaps heavy. 英格兰东南部有短时阵雨，部分地区会转成大雨。 2. Elsewhere is largely dry with sunny spells and just a scattering of light showers, but becomin