The science behind the first Steam Engine largely consisted of creating a vacuum inside a vessel by adding cold water to steam.
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By destroying an oil drum the team demonstrate how using steam the wrong way turned out to be the right way, thus demonstrating the principles behind the first ever practical engine.

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'The Genius Of Invention':
Michael Mosley and team pick 12 inventions and explore how they have changed the way we live our lives.

Welcome to BBC Earth Science! Here we answer all your curious questions about science in the world around you. If there’s a question you have that we haven’t yet answered let us know in the comments!

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