## James Prescott Joule and the Concept of EnergyDawson, 1979 - 172 pages |

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Page 89

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**paddle wheel**apparatus to obtain greater accuracy , convinced that there must be an exact number for the equivalence , one closer to the other three values . The spread of the results could not have instilled a similar confidence in his ...Page 90

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**paddle wheel**apparatus . TIM Fig . 4. Side view diagram of Joule's**paddle wheel**apparatus . a b Fig . 5. Container for**paddle wheel**apparatus 90 JAMES PRESCOTT JOULE AND THE CONCEPT OF ENERGY.Page 91

... wheels ; the weights were allowed to fall through a distance of about 63 inches ; that is , until they reached the laboratory floor . The starting height of the weights above the floor was measured by a ruler . The

... wheels ; the weights were allowed to fall through a distance of about 63 inches ; that is , until they reached the laboratory floor . The starting height of the weights above the floor was measured by a ruler . The

**paddle wheel**...### Contents

Joules Search for a Theory of Heat | 19 |

Conjectures on J R Mayer and J P Joule | 61 |

The Mechanical Equivalent of Heat | 77 |

Copyright | |

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### Common terms and phrases

accuracy apparatus atmospheres of electricity atoms battery bodies caloric theory Carnot function Carnot's theory chemical chemical affinity Clausius combustion compression concept of energy concept of heat conclusion conduction Conservation of Energy considered convertibility current electricity Dalton Davy determined developed dynamical theory elec electric current electrolysis electromagnets equivalent of heat exact falling force Faraday Faraday's friction galvanometer gases grand agents heat and mechanical heat evolved heat produced Helmholtz hypothesis Ibid interest James Prescott Joule Joule's experimental Joule's experiments Joule's paper magnetism Manchester mathematical Mayer's paper mechanical effect mechanical equivalent mechanical force mechanical power Michael Faraday nature paddle wheel particles phenomena Philosophical Magazine physical power of heat principle proportional quantity of heat radiant heat Rankine Rankine's Regnault's researches resistance Royal Society Rumford Science Scientific Papers specific heat steam engine substance temperature theoretical theory of heat tion translation tricity velocity vis viva viva voltaic weight William Thomson