The Principles of Science: A Treatise on Logic and Scientific Method |
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Page xvi
... employed the name and principle of substitution , and that doctrines closely approximating to substitution were stated by the Port Royal Logicians more than 200 years . ago . I have not been at all surprised to learn , however , that ...
... employed the name and principle of substitution , and that doctrines closely approximating to substitution were stated by the Port Royal Logicians more than 200 years . ago . I have not been at all surprised to learn , however , that ...
Page xxiv
... employed somewhat in the manner of Napier's Bones ( p . 65 ) . There is much analogy between his Square and my Abacus , but Lange had not arrived at a logical system enabling him to use his invention for logical inference in the manner ...
... employed somewhat in the manner of Napier's Bones ( p . 65 ) . There is much analogy between his Square and my Abacus , but Lange had not arrived at a logical system enabling him to use his invention for logical inference in the manner ...
Page 2
... employed in science would be useless to us . Did Chance wholly take the place of order , and did all phenomena come out of an Infinite Lottery , to use Condorcet's ex- pression , there could be no reason to expect the like result in ...
... employed in science would be useless to us . Did Chance wholly take the place of order , and did all phenomena come out of an Infinite Lottery , to use Condorcet's ex- pression , there could be no reason to expect the like result in ...
Page 4
... employed in the acquisition of knowledge are prob- ably three in number . They are substantially as Professor Bain has stated them1 : - 1. The Power of Discrimination . 2. The Power of Detecting Identity . 3. The Power of Retention . We ...
... employed in the acquisition of knowledge are prob- ably three in number . They are substantially as Professor Bain has stated them1 : - 1. The Power of Discrimination . 2. The Power of Detecting Identity . 3. The Power of Retention . We ...
Page 10
... employed to represent the length of one object , and according as it agrees or not with the other , so must the two ... employ the axiom that whatever is true of a thing as regards its length , is true of its equal . To every other ...
... employed to represent the length of one object , and according as it agrees or not with the other , so must the two ... employ the axiom that whatever is true of a thing as regards its length , is true of its equal . To every other ...
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Common terms and phrases
abC abc ABcd AbCd analogy apparent arithmetic assert body calculation cause character classification colour Contrapositive crystals deductive deductive reasoning density detect discovered discovery disjunctive proposition earth effect electricity equal equation equivalent error exactly exist experiment expression fact fcap force give gravity heat hypothesis identity induction inference infinite instance inverse inverse logical investigation J. S. Mill James Bernoulli knowledge Laws of Identity laws of nature Laws of Thought letters light Logical Alphabet logical conditions magnetic mammę manner mathematical matter mean measure metal method mode motion negative Newton number of combinations objects observation obtain pendulum phenomena Philosophical planets possible premises principle probability problem Professor properties proposition qualities quantity reasoning refraction regards relation scientific simple specific gravity stars substances substitution supposed syllogism symbols temperature theory things tion triangle true truth velocity
Popular passages
Page 454 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
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Page 480 - Whatever phenomenon varies in any manner, whenever another phenomenon varies in some particular manner, is either a cause or an effect of that phenomenon, or is connected with it through some fact of causation.
Page 304 - Absolute, true, and mathematical time, of itself, and from its own nature, flows equably without relation to anything external...
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