The Principles of scienceMacmillan and Company, 1874 - 480 oldal |
Részletek a könyvből
1 - 5 találat összesen 81 találatból.
3. oldal
... become the failures of inference compared with the successes . Exceptions to the prevalence of Law are gradually reduced to Law themselves . Certain deep similarities have been detected among the objects around us , and have never yet ...
... become the failures of inference compared with the successes . Exceptions to the prevalence of Law are gradually reduced to Law themselves . Certain deep similarities have been detected among the objects around us , and have never yet ...
4. oldal
... become more wonder- ful . Identity in one or other of its phases is thus always the bridge by which we pass in inference from case to case ; and it is my purpose in this treatise to trace out the various forms in which the one same ...
... become more wonder- ful . Identity in one or other of its phases is thus always the bridge by which we pass in inference from case to case ; and it is my purpose in this treatise to trace out the various forms in which the one same ...
10. oldal
... become the subject of discussion until by some system of material signs it is manifested to other persons . The logician then uses words and symbols as instruments of reasoning , and leaves the nature and pe- culiarities of existing ...
... become the subject of discussion until by some system of material signs it is manifested to other persons . The logician then uses words and symbols as instruments of reasoning , and leaves the nature and pe- culiarities of existing ...
25. oldal
... become aware of the great simplification which may be effected by a proper appli- cation of the principle of substitution . I was not then acquainted with the fact that the German logician Pure Logic , ' pp . 18-19 . Beneke had employed ...
... become aware of the great simplification which may be effected by a proper appli- cation of the principle of substitution . I was not then acquainted with the fact that the German logician Pure Logic , ' pp . 18-19 . Beneke had employed ...
39. oldal
... become apparent when we attempt to determine the relations of logical and mathematical science . Two symbols of quantity , and only b Mathematical Analysis of Logic , ' Cambridge , 1847 , p . 17. An Investigation of the Laws of Thought ...
... become apparent when we attempt to determine the relations of logical and mathematical science . Two symbols of quantity , and only b Mathematical Analysis of Logic , ' Cambridge , 1847 , p . 17. An Investigation of the Laws of Thought ...
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Gyakori szavak és kifejezések
ABCD Abecedarium amount analogy apparent arise assert astronomers body calculation cause character circumstances classification colour combinations comets crystals deductive deductive reasoning degree density detect determined diamagnetic discovered discovery disjunctive proposition earth effect electricity equal equivalent error exactly exist experiment expression fact force Francis Bacon gravity heat hypothesis identity induction inference instance inverse investigation J. S. Mill knowledge Law of Error Laws of Identity laws of nature Laws of Thought less light liquid logical logical conditions magnetic mammæ manner mathematical matter mean measure metal method mode motion negative Newton objects observed pendulum phenomena phenomenon Philosophical physical planets possess possible premises principle properties proposition prove qualities quantity reasoning refraction regards relation scientific scientific method similar simple space specific gravity stars substances substitution supposed syllogism symbols temperature things tion triangle true truth velocity vibrations
Népszerű szakaszok
359. oldal - Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
233. oldal - I have long held an opinion, almost amounting to conviction, in common I believe with many other lovers of natural knowledge, that the various forms under which the forces of matter are made manifest have one common origin; or, in other words, are so directly related and mutually dependent, that they are convertible, as it were, one into another, and possess equivalents of power in their action.
145. oldal - That it is the glory of God to conceal a thing, but the glory of a king to search it out.
465. oldal - Scientific method leads us to the inevitable conception of an infinite series of successive orders of infinitely small quantities. If so, there is nothing impossible in the existence of a myriad universes within the compass of a needle's point, each with its stellar systems, and its suns and planets, in number and variety unlimited. Science does nothing to reduce the number of strange things that we may believe. When fairly pursued, it makes large drafts upon our powers of comprehension and belief...
63. oldal - If one part of any system connected either by material ties, or by the mutual attractions of its members, be continually maintained by any cause, whether inherent in the constitution of the system or external to it, in a state of regular periodic motion, that motion will be propagated throughout the whole system, and will give rise, in every member of it, and in every part of each member, to periodic movements executed in eijual periods with that to which they owe their origin, though not necessarily...
161. oldal - Malus, while looking through a prism of calcareous spar at the light of the setting sun reflected from the windows of the Luxembourg palace in...
244. oldal - He that will not eat till he has demonstration that it will nourish him; he that will not stir till he infallibly knows the business he goes about will succeed, will have little else to do but to sit still and perish.
84. oldal - A peer is either a duke, or a marquis, or an earl, or a viscount, or a baron.' If expressed in Professor Boole's symbols, it would be implied that a peer cannot be at once a duke and marquis, or marquis and earl. Yet many peers do possess two or more titles, and the Prince of Wales is Duke of Cornwall, Earl of Dublin, and Baron Renfrew.
272. oldal - not one of the inductive truths which men have established, or think they have established, is really safe from exception or reversal. . . . Euler expresses no more than the truth when he says that it would be impossible to fix on any one thing really existing of which we could have so perfect a knowledge as to put us beyond the reach of mistake.
6. oldal - Whatever is, is." (2) The law of contradiction: "Nothing can both be and not be." (3) The law of excluded middle: "Everything must either be or not be.