In 1764, scotsman James Watt grew thoughtful as he tinkered with the machinery associated with his job as a steam engine technician. The main problem with those early steam engines, called Newcomen engines, was that they were terribly inefficient. They were a step up from draft horses, but Newcomen engines […]
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Can you be electrocuted in the bathtub? Sure — but only because the water’s not pure. Many people don’t realize that absolutely pure water doesn’t conduct electricity. This is because the hydrogen and oxygen atoms don’t have free electrons. In a typical domestic water supply, it’s the impurities such as […]