Almost three centuries after his death, Antonio Stradivari is still a legend for the sound of his instruments, from the rich depths of his cellos [cello sound] to the soaring clarity of his violins [violin sound]. Theories are often put forth that St

发表于:2018-12-24 / 阅读(139) / 评论(0)

Scientific American(十二)月

SSS 2009-12-21

Its the season for celebrating and many of those celebrations include imbibing alcohol. Which sometimes leaves us the next morning with uncomfortable reminders of our excesses. But does what we drinksay bourbon versus vodkamake a difference? Apparent

发表于:2018-12-02 / 阅读(188) / 评论(0)

Scientific American(十二)月

SSS 2009-12-22

In 2008 astronomers discovered surprising amounts of water molecules where planets were forming near young stars. But how, they wondered, could those molecules survive? They should have been destroyed by ultraviolet radiation. In theory, planetary du

发表于:2018-12-02 / 阅读(187) / 评论(0)

Scientific American(十二)月

SSS 2009-12-23

Picture a gamer, someone who spends countless hours immersed in one of those online role-playing alternate realities. And what do you see? Is it a physically fit female closer to 40 than 14? If not, you may need to rethink your assumptions about geek

发表于:2018-12-02 / 阅读(165) / 评论(0)

Scientific American(十二)月

SSS 2009-12-24

The northeast just had its first big snow of the season. Meanwhile, on Titan, it was foggy. That weather report brought to you by researchers publishing in the journal Astrophysical Journal Letters. The scientists found that Titan, Saturns largest mo

发表于:2018-12-02 / 阅读(179) / 评论(0)

Scientific American(十二)月

SSS 2009-12-28

Did you ever sit down to take a test and discover that the person next to you mumbles his way through the whole thing. You probably thought, What kind of doofus cant add a few numbers without moving his mouth? Turns out the answer may be: a very clev

发表于:2018-12-02 / 阅读(177) / 评论(0)

Scientific American(十二)月

SSS 2009-12-29

Could there be a substance that both gives us the munchies and can help combat obesity? There may indeed be, according to research published in the Proceedings of the National Academy of Sciences. The Monell Center in Pennsylvania partnered with Kyus

发表于:2018-12-02 / 阅读(156) / 评论(0)

Scientific American(十二)月

SSS 2009-12-31

So 2009 was, in part, a year of powerful people behaving badly. We had Kanye West stealing Taylor Swifts moment at the VMA awards, South Carolina governor Mark Sanford disappearing to, ahem, hike the Appalachian trail, and of course David Letterman,

发表于:2018-12-02 / 阅读(269) / 评论(0)

Scientific American(十二)月

SSS 2009-12-30

Before you pay big money for caviar, check with two New York City high school students. Brenda Tan and Matt Cost worked with DNA barcoding experts at Rockefeller University and other researchers at the American Museum of Natural History to identify h

发表于:2018-12-02 / 阅读(187) / 评论(0)

Scientific American(十二)月

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学英语单词

anti-convection device

bell-type accumulator