The Principles of Science: A Treatise on Logic and Scientific MethodMacmillan and Company, 1887 - 786 páginas |
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Página 36
... , and vice versa . " The density of Mars is ( nearly ) the same as that of the Earth , " " The force of gravity is directly as the product of the masses , and inversely as the square of the distance , " are CHAPTER III PROPOSIUONY,
... , and vice versa . " The density of Mars is ( nearly ) the same as that of the Earth , " " The force of gravity is directly as the product of the masses , and inversely as the square of the distance , " are CHAPTER III PROPOSIUONY,
Página 52
... force . " I take this to mean- Matter Matter = = 3 force . = what can be perceived by the senses ; what can be acted upon by or can exert 1 Treatise on Natural Philosophy , vol . i . p . 161 . For the term " matter " in either of these ...
... force . " I take this to mean- Matter Matter = = 3 force . = what can be perceived by the senses ; what can be acted upon by or can exert 1 Treatise on Natural Philosophy , vol . i . p . 161 . For the term " matter " in either of these ...
Página 54
... force with which the earth attracts it , is proportional to its mass . " The conjunction or in this statement gives the force of equivalence to the parenthetic phrase , so that the propositions really are Weight of a body force with ...
... force with which the earth attracts it , is proportional to its mass . " The conjunction or in this statement gives the force of equivalence to the parenthetic phrase , so that the propositions really are Weight of a body force with ...
Página 113
... force , because they turned upon the employ- ment of unintelligible symbols , acquiring meaning only by analogy . I have also pointed out that he imported into his system a condition concerning the exclusive nature of alternatives ( p ...
... force , because they turned upon the employ- ment of unintelligible symbols , acquiring meaning only by analogy . I have also pointed out that he imported into his system a condition concerning the exclusive nature of alternatives ( p ...
Página 163
... forces equally intense with a third force are equally intense with each other . It is remarkable that Euclid has not explicitly stated two other axioms , the truth of which is necessarily implied . The second axiom should be that " Two ...
... forces equally intense with a third force are equally intense with each other . It is remarkable that Euclid has not explicitly stated two other axioms , the truth of which is necessarily implied . The second axiom should be that " Two ...
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Términos y frases comunes
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
Pasajes populares
Página 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.
Página 589 - The philosopher should be a man willing to listen to every suggestion, but determined to judge for himself. He should not be biased by appearances; have no favorite hypothesis ; be of no school ; and in doctrine have no master. He should not be a respecter of persons, but of things. Truth should be his primary object. If to these qualities be added industry, he may indeed hope to walk within the veil of the temple of nature.
Página 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.
Página 304 - Absolute, true, and mathematical time, of itself, and from its own nature, flows equably without relation to anything external...
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