Discrepancy between theory and practice, which in sound physical and mechanical science is a delusion, has a real … - William John Macquorn Rankine

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One cannot spend one's entire life running into bathrooms when danger calls!

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; and that fallacy, through rejected by their judgments, continues to exert and influence over their acts.

Continues, Discrepancies Between, Influence, Men, Real, Science

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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 unchangeable.

Energies, Energy, Knowledge, Law, Science

A hypothetical theory is necessary, as a preliminary step, to reduce the expression of the phenomena to simplicity and order before it is possible to make any progress in framing an abstractive theory.

Abstractive, Expression, Hypothetical, Order, Simplicity, Step

It is possible to express the laws of thermodynamics in the form of independent principles , deduced by induction from the facts of observation and experiment, without reference to any hypothesis as to the occult molecular operations with which the sensible phenomena may be conceived to be connected; and that course will be followed in the body of the present treatise. But, in giving a brief historical sketch of the progress of thermodynamics, the progress of the hypothesis of thermic molecular motions cannot be wholly separated from that of the purely inductive theory.

Followed, Giving, Independent, Law, Operations, Treatise

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 mutually inconsistent ideas. . . . [this fallacy] based on a double system of natural laws retarded for centuries the development of physical science, notably mechanics.

Fallacy, Ideas, Law, Physical, Theory, Two

This law (regarding the theoretical efficiency of heat engines by Mr. Joule), and the law of the maximum efficiency of heat engines, are particular cases of a general law which regulates all transformation of energy, and is the basis of the Science of Energetics.

Energy, Heat, Joule, Law, Science

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