极化光的磁臻旋转

This is Scientific American 60 Second Science, I am Cynthia Graber, this will just take a minute~ How can we search for life on exoplanets? Step one: examine the Earth as if it were an exoplanet. Thats the idea behind a recent look at earthshine. Res

发表于:2019-01-08 / 阅读(58) / 评论(0) 分类 Scientific American(三)月

This Scientific Americans 60 senconds science. I'm Cythia Graber. This will just take a minute. How did the zebra get stripes. One theory holds that stripes help confused predators. But stripes might be primarilly to protect zebras from ferocious ins

发表于:2019-01-08 / 阅读(66) / 评论(0) 分类 Scientific American(二)月

SCOTT SIMON, HOST: Time for our monthly check in with music masters who are not BJ Leiderman - who writes our theme music - public radio DJs with what they play in Heavy Rotation. NICK BRUNNER, BYLINE: My name is Nick Brunner. I am the host of Hey Li

发表于:2019-01-16 / 阅读(55) / 评论(0) 分类 2017年NPR美国国家公共电台7月

Easily confused by this idea, there has a big thawed iron inner core, so that I think it's just the bar magnet, just permanent magnet frozen in nad, and that's where causes all the magnetic field. But it's too hot inside the Earth, that can't happen

发表于:2019-01-22 / 阅读(46) / 评论(0) 分类 自然百科2011年

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(61) / 评论(0) 分类 英语新闻

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

发表于:2019-02-16 / 阅读(48) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
-itis
abessives
adsorbant
al-anbari
areal pattern
aysel
back-check cloth
behavior-attitude link
birth grant
call for somebody
Candasnos
carbon-nitrogen-oxygen cycles
Cascade R.
ceratina nigrolateralis vechti
Chistogorskiy
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Dalan Age
damage saturation
different position
direct-entries
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drosty
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EVR (electronic video recorder)
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inner harbour line
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inquirendo
isthmus of uterine tube
Karaköse
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