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A twist on the candle mystery

In a classic demonstration of the candle mystery, three lit candles of different heights are covered with a gas jar (see figure 1) and the tallest candle goes out first. This happens because carbon dioxide produced from burning has a higher temperature, so it rises and accumulates at the top of the…

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Take the weather with you

Karen Bultitude introduces a set of simple, fun and memorable demonstrations using everyday ingredients to explain meteorological…

       


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