Century Quotes by William John Macquorn Rankine

1 Century quote by William John Macquorn Rankine

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The words 'theory' and 'practice' are of Greek origin; they carry our thoughts back to the ancient philosophers by whom they were contrived, and by whom they were also contrasted and placed in opposition, as denoting two mutually conflicting and…

William John Macquorn Rankine

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The laws of thermodynamics may be regarded as particular cases of more general laws, applicable to all such states of matter as constitute Energy , or the capacity to perform work, which more general laws form the basis of the science of energetics, a science comprehending, as special branches, the theories of motion, heat, light , electricity , and all other physical phenomena.

William John Macquorn Rankine

Discrepancy between theory and practice, which in sound physical and mechanical science is a delusion, has a real existence in the minds of men;…

William John Macquorn Rankine

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The hypothesis of molecular vortices is defined to be that which assumes - that each atom of matter consists of a nucleus or central point enveloped by an elastic atmosphere, which is retained in its position by attractive forces, and that the elasticity due to heat arises from the centrifugal force of those atmospheres revolving or oscillating about their nuclei…

William John Macquorn Rankine

In thermodynamics as well as in other branches of molecular physics , the laws of phenomena have to a certain extent been anticipated, and their investigation facilitated, by the aid of hypotheses as to occult molecular structures and motions with which such phenomena are assumed to be connected. The hypothesis which has answered that purpose in the case of thermodynamics,…

William John Macquorn Rankine

This law (regarding the theoretical efficiency of heat engines by Mr. Joule), and the law of the maximum efficiency of heat engines, are particular…

William John Macquorn Rankine

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The law of the Conservation of Energy is already known — viz., that the sum of all the energies of the universe, actual and…

William John Macquorn Rankine

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The law of the conservation of energy is already known, viz. that the sum of the actual and potential energies in the universe is…

William John Macquorn Rankine

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It is possible to express the laws of thermodynamics in the form of independent principles , deduced by induction from the facts of observation…

William John Macquorn Rankine

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The words 'theory' and 'practice' are of Greek origin; they carry our thoughts back to the ancient philosophers by whom they were contrived, and…

William John Macquorn Rankine

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A hypothetical theory is necessary, as a preliminary step, to reduce the expression of the phenomena to simplicity and order before it is possible…

William John Macquorn Rankine

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