If the water flow down by a gradual natural channel, its potential energy is gradually converted into heat by fluid friction, according to an admirable discovery made by Mr Joule of Manchester above twelve years ago, which has led to the greatest reform that physical science has experienced since the days of Newton. From that discovery, it may be concluded with certainty that heat is not matter, but some kind of motion among the particles of matter; a conclusion established, it is true, by Sir Humphrey Davy and Count Rumford at the end of last century, but ignored by even the highest scientific men during a period of more than forty years.
William ThomsonRelated topics
above century certainty channel conclusion count discovery end energy flow fluid forty gradual heat joule men kind last led matter motion natural period physical potential reform science sir twelve water friction years days manchester newton davyRelated quotes
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Martin Luther King Jr.
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Dadasaheb Phalke
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Barack Obama
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Albert Einstein
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Miguel de Unamuno
