Ideas from 'works' by James Joule [1870], by Theme Structure
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27. Natural Reality / A. Classical Physics / 2. Thermodynamics / b. Heat
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20972
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Joule showed that energy converts to heat, and heat to energy
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Full Idea:
James Joule established the equivalence of heat and mechanical energy, in the sense of showing that a specific amount of heat will always be produced by the expenditure of a given amount of energy, and vice versa.
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From:
report of James Joule (works [1870]) by David Papineau - Thinking about Consciousness App 4.2
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A reaction:
This was a major step towards the law of conservation of energy.
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20645
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Heat is a state of vibration, not a substance
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Full Idea:
We consider heat not as a substance but as a state of vibration.
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From:
James Joule (works [1870]), quoted by Peter Watson - Convergence 01 'Nature's'
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A reaction:
The puzzle is that giving accurate accounts of vibrations, heat and movement require a quantitative substance, energy. But all we have here is movement, and the denial of a substance. Energy is 'nature's currency system'.
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