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The First Steam Engines
Choose the right antonym (opposite):
downward, blow, safe
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French physicist Denis Papin was among the first inventors to create a working steam engine.
Papin's invention was very simple. Papin used steam to force a piston upward. He then took the heat source away and let the piston drop back down.
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In 1698 English engineer Thomas Savery invented a steam pump that sucked water out of flooded mine shafts. However, it could only move water about six metres, and often exploded!
In 1769 Scottish engineer and inventor James Watt began making lots of small improvements. By 1819 these additions made the steam engine much more efficient - and much less dangerous.
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