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[科学美国人60秒] SSS 2020-02-11

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[科学美国人60秒] SSS 2020-02-11

SSS 20200211

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60秒科学节目(SSS)是科学美国人网站的一套广播栏目,英文名称:Scientific American - 60 Second Science,节目内容以科学报道为主,节目仅一分钟的时间,主要对当今的科学技术新发展作以简明、通俗的介绍,对于科学的发展如何影响人们的生活环境、健康状况及科学技术,提供了大量简明易懂的阐释。

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[Homework]SSS 2020-02-11

This is scientific America 60s science,I'm L.Bra.It came to the attention a few years ago that there were froggy and whisky on the market.G.C of the Scottish university in environmental research center.Scottish whisky is the Scotland product and we feel might be a really cut of * and Scotmen we should take a witness.Scottish whisky is made from barley which absorbed carbon dioxide from the air of growth.Most of the carbon is Carbon-12 but small percentage is the radio added device tube Carbon-14 which decays the constant long rate.And there for long* to carbon day biological samples.Then in the early 1950s we had the start of *feeling weapon state could use carbon-14.By 1960, it was even twice natural level. And 60 is a tannsfying trity so 60 is the maximum. And since then the rival and * decrease as the really carbon *any oceans. So when usually high level of carbon-14 says it was barley groudering the years when the glare testing was wide spread.There is obviously a lot of money in whisky.And some classes get but not the buying of them but investment.Last October a 60 year old 1926 bottle was optional offered at 1.9 million$.To make sure the stuff in bottles of Scottish whisky matched which is on the labels.Cooking this collide looks the level of carbon 14 in the drink.The *level of the radioactive varying into carbon more than 200 different single model Scottish whisky sample of knowledges.The researchers them compared those levels to each whisky climbing to a bottle from 1847 to 1978.We haven’t found any whisky propertied to be found the 19 century.That are.... genuine.Because those are *19 century bottles contained material clearly produced during a nuclear testing area.The study in the journal Radio Carbon.C hopes these verification techniques will helps keep the whisky business true to the world of Robert Bowers.Here is a bottle and the honest friend.

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