单词：refigerated light
单词：refigerated light 相关文章
Why Is It So Difficult To Spot A Plane In The Air? How many times have you heard a jet plane going over, looked up to see it, but not been able to find it even though you were looking toward where the sound was coming from? Well, this moment of scien
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A Magical Glow? Have you ever wondered why fluorescent colors, like you see in highlighters or clothing dyes, for instance,seem so much brighter than other colors? Its because they seem to reflect more light than they receive! It may sound like a mag
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Leaves Inspire Better Solar Panels What do leaves and solar panels have in common? Both absorb sunlight and turn it into energy. But while solar panels typically have smooth surfaces, leaves have tiny wrinkles and folds that allow for maximum light a
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The Nightlife Of Plants Most plants grow buds, flower, or lie dormant at specific times of year. What Triggers These Seasonal Changes? Temperature and rainfall often play a role, but the most important factor to many plants is the length of the day.
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Night Vision And Humans: Why Cant We See Color? When we are in a fairly dark room, or outside at night away from lights, we can still see, but we cant see the colors of things very well. Why is that? There are two kinds of light-sensitive organs loca
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Afterglow Heres an experiment you can try: look at something bright relative to its surroundings, such as a lamp or a sunny window, for ten seconds without blink ing . Then shut your eyes and cover them over with your hands. You will find that the la
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黑洞是一种引力极强的天体，就连光也不能逃脱。当恒星的史瓦西半径小到一定程度时，就连垂直表面发射的光都无法逃逸了。这时恒星就变成了黑洞。说它黑，是指它就像宇宙中的无底洞，
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Are Tanning Beds Safe? Millions of people go to tanning salons, some to get a base tan before they go away on a beach vacation. The idea of the base tan is that it will protect you from burning on your sun excursion, so that what you end up with is a
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Sunrise or Sunset? Yal: Don? Don: Yes, Yal? Y: We've been in this art museum for 5 hours now. And you've spent the whole time staring at that one photograph of sunset. D: Are you sure? Y: Of course I'm sure. You haven't budged. D: But are you sure it
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Frozen Smoke 固体烟 Male: What's as light as smoke but strong as a brick? Female: I'm gonna take a while guess and say... aerogel ? Male: Sorry,yaoyao,the answer is... Wait a second! Did you say aerogel ? How did you know? F:Yeap! Did you know tha
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More and more women have began smoking in the last few decades. One of the reasons is savvy marketing as Don explains to Yael in this Moment of Science. D: Yael, what's that in your hand? Y: Come on, Don. Haven't you seen a cigarette before? Every da
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The Eye of the Dung Beetle A number of animals, including honeybees and butterflies, use sunlights polarization in their navigation s , but the dung beetle is the first animal ever discovered to use moonlights polarization to guide its travels. Polar
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D: Yael, what's that in your hand? Y: Come on, Don. Haven't you seen a cigarette before? Every day in the United States, about 1500 girls begin smoking, and I figured, why not do my share? D: But Yael, don't you know that tobacco kills more than 140,
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Dont Try This at Home! Heres a hypothetical scenario that is to remain hypothetical. In other words, dont do this. Okay. Youre cruising along a desert highway in your souped-up roadster, leaving the roadrunners in the dust. Unfortunately, you are not
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Cats And Colors 人类能够很容易的分辨出不同的颜色。那么猫呢？虽然猫的视力很好，即使在非常昏暗的光线条件下也能看见，但它对于如何分辨不同的颜色似乎并不擅长。 Cats and Colors on this mo
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世界上跑得最快的是什么？答案是光速。它每秒能跑186,280英里。因为即使在太空中，光速也大致相同，所以光年也就用于描述不同星球之间的距离。记住了哦，光年是距离单位，不是时间单位
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Where Does The Term'Limelight'Originate You're in the limelight now on this moment of science. If someone loves being in the limelight, that means they enjoy being the center of attention. We use the word now to mean social prominence, but have you e
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Why Are Some Headlights Blue-High Intensity Discharge Lamps 高强度气体放电（High-intensity discharge，简称HID）灯泡包含了下列这些种类的电灯：水银灯、金属卤化灯（也称作HQI）、高压钠灯、低压钠灯、高压
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Zippy Aliens 爱因斯坦的狭义相对论认为物体的运动速度越接近光速，时间越慢。在1971年，物理学家理查德基廷和乔伊哈夫勒验证了这个假想。他们将4个极为精确的原子钟放在一架普通航行的飞
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What Is Fire? 火是物质燃烧过程中散发出光和热的现象，是能量释放的一种方式。火焰分为焰心、中焰和外焰，温度由内向外依次增高。燃烧过程必须有可燃物、燃点温度、氧化剂三项并存，缺一
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