The Principles of Science: A Treatise on Logic and Scientific Method |
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Page vii
... asserted that the rapid progress of the physical sciences during the last three centuries has not been accompanied by a corresponding advance in the theory of reasoning . Physicists speak familiarly of Scientific Method , but they could ...
... asserted that the rapid progress of the physical sciences during the last three centuries has not been accompanied by a corresponding advance in the theory of reasoning . Physicists speak familiarly of Scientific Method , but they could ...
Page xi
... material facts , presumes to assert that it has compassed the bounds of existence , while it nevertheless ignores the most unquestionable phenomena of the human mind and feel- ings . PREFACE TO THE FIRST EDITION . xi CHAPTER.
... material facts , presumes to assert that it has compassed the bounds of existence , while it nevertheless ignores the most unquestionable phenomena of the human mind and feel- ings . PREFACE TO THE FIRST EDITION . xi CHAPTER.
Page 6
... asserts that at every step there are two possible alter- natives presence or absence , affirmation or negation . Hence I propose to name this law the Law of Duality , for it gives to all the formulæ of reasoning a dual character . It ...
... asserts that at every step there are two possible alter- natives presence or absence , affirmation or negation . Hence I propose to name this law the Law of Duality , for it gives to all the formulæ of reasoning a dual character . It ...
Page 22
... . 9 . 2 Port - Royal Logic , transl . by Spencer Baynes , pp . 212-219 . Part III . chap . x . and xi . but I will not undertake to prove the assertion in 22 [ CHAP . THE PRINCIPLES OF SCIENCE . The Logic of Relatives 219.
... . 9 . 2 Port - Royal Logic , transl . by Spencer Baynes , pp . 212-219 . Part III . chap . x . and xi . but I will not undertake to prove the assertion in 22 [ CHAP . THE PRINCIPLES OF SCIENCE . The Logic of Relatives 219.
Page 23
... assertion in this work . The relations of time and space are logical- relations of a complicated character demanding much abstract and difficult investigation . The subject has been treated with such great ability by Peirce , ' De ...
... assertion in this work . The relations of time and space are logical- relations of a complicated character demanding much abstract and difficult investigation . The subject has been treated with such great ability by Peirce , ' De ...
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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 mammæ 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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