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Well, that's limelight. What exactly was it? Well it was the burning of calcium oxide in a very intense flame. And when did the job of a limelighter begin? Oh, famously, the first recorded instance in
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This is Scientific America 60-Second Science, I'm Santy Criber. This will just take a minute. It's boating season, which means it'll soon be time for the annoying ritual, scraping of the barnacles.They lache on tide and don't let go, barnacles can be
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It's boating season, which means it'll soon be time for that annoying ritual, the scraping of the barnacle. They latch on tight and don't let go. Barnacles can be a major pain. As they grow they build up calcium deposits under a boat's paint. And the
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Soon after taking up his position, Davy began to bang out new elements one after anotherpotassium, sodium,magnesium, calcium, strontium, and aluminum or aluminium, depending on which branch of English you favor. 上任不久，戴维开始宣布发现一
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