The Popular Science Monthly, Volume 75McClure, Phillips and Company, 1909 - Science |
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Page 20
... axis is called spin , and the axle upon which the wheel rotates is called the axle of spin . The spin of a W S W FIG . 1 . 1 wheel may be completely repre- sented in both magnitude and direction by an arrow drawn par- allel to the axle ...
... axis is called spin , and the axle upon which the wheel rotates is called the axle of spin . The spin of a W S W FIG . 1 . 1 wheel may be completely repre- sented in both magnitude and direction by an arrow drawn par- allel to the axle ...
Page 21
... axis , and the number of revolutions per second will be represented by the length of R. The geometrical relationship between the arrows S ' , S " , and R is completely represented in the triangle OMN of Fig . 2 , which triangle . is ...
... axis , and the number of revolutions per second will be represented by the length of R. The geometrical relationship between the arrows S ' , S " , and R is completely represented in the triangle OMN of Fig . 2 , which triangle . is ...
Page 22
... axis of torque is always at right angles to the axis of spin is the most important case , and this case is exemplified in the ordinary gyrostat , which is a wheel and axle supported in a S S ' AS FIG . 5 . FIG . 6 . movable frame as ...
... axis of torque is always at right angles to the axis of spin is the most important case , and this case is exemplified in the ordinary gyrostat , which is a wheel and axle supported in a S S ' AS FIG . 5 . FIG . 6 . movable frame as ...
Page 23
... axis which is at right angles to the axis of spin , and this torque causes the axis of spin to sweep around the pivot O as described in connection with Fig . 7. Precessional motion is illustrated floor P FIG . 9 . S FIG . 8 . in the ...
... axis which is at right angles to the axis of spin , and this torque causes the axis of spin to sweep around the pivot O as described in connection with Fig . 7. Precessional motion is illustrated floor P FIG . 9 . S FIG . 8 . in the ...
Page 24
8 ( sweeping of axis of spin about a vertical axis through 0 ) brings about inertia reactions of the various particles of the spinning wheel which keep the wheel from falling under the pull of gravity ; it is only necessary to show that ...
8 ( sweeping of axis of spin about a vertical axis through 0 ) brings about inertia reactions of the various particles of the spinning wheel which keep the wheel from falling under the pull of gravity ; it is only necessary to show that ...
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American animals appear argument astronomical Atlantic Atlantic forest axis bacteria believe birds body canal Carloforte cells cent century character Charles Darwin chromatophores Darwin disease doctrine early earth effectors electric evolution existence fact feet forest Francis Galton German given gyrostatic human Huxley hypothesis increase individual influence inheritance interest Josiah Willard Gibbs knowledge land language large number Latin latitude less living Lord Kelvin mathematical matter means mental method miles mind motion muscles Museum natural selection nature nerves nervous system North observations observatory Ohio Ohio River origin Origin of Species period phagocytes phenomena phosphorescent physical plants population present probably produced Professor progress psychology question region relation represented river rotation scientific September 27 species stars stations substance theory tion trees uniformitarianism University valley variation vertebrates York zoology
Popular passages
Page 579 - ... philosophers. He turns away from abstraction and insufficiency, from verbal solutions, from bad a priori reasons, from fixed principles, closed systems, and pretended absolutes and origins. He turns towards concreteness and adequacy, towards facts, towards action and towards power. That means the empiricist temper regnant and the rationalist temper sincerely given up. It means the open air and possibilities of nature, as against dogma, artificiality, and the pretence of finality in truth.
Page 539 - Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such finely graduated organic chain; and this, perhaps, is the most obvious and serious objection which can be urged against the theory.
Page 579 - No particular results then, so far, but only an attitude of orientation, is what the pragmatic method means. ^The attitude of looking away from first things, principles, " categories," supposed necessities ; and of looking towards last things, fruits, consequences, facts.
Page 579 - A pragmatist turns his back resolutely and once for all upon a lot of inveterate habits dear to professional philosophers.. He turns away from abstraction and insufficiency, from verbal solutions, from bad a priori reasons, from fixed principles, closed systems, and pretended absolutes and origins. He turns towards concreteness and adequacy, towards facts, towards action and towards power.
Page 81 - Existence] in a large and metaphorical sense including dependence of one being on another, and including (which is more important) not only the life of the individual, but success in leaving progeny. Two canine animals, in a time of dearth, may be truly said to struggle with each other which shall get food and live. But a plant on the edge of a desert is said to struggle for life against the drought, though more properly it should be said to be dependent on the moisture.
Page 91 - ... gradually into existence, than when they are only considered as produced at once in a finished and perfect state.
Page 75 - The first principle of the subject is, that man can only make progress in "co-operative groups"; I might say tribes and nations, but I use the less common word because few people would at once see that tribes and nations are co-operative groups, and that it is their being so which makes their value, — that unless you can make a strong co-operative bond, your society will be conquered and killed out by some other society which has such a bond. And the second principle is, that the members of such...
Page 307 - the study of agencies under social control that may improve or impair the racial qualities of future generations, either physically or mentally.
Page 88 - Species introduced a mode of thinking that in the end was bound to transform the logic of knowledge, and hence the treatment of morals, politics, and religion.
Page 572 - To attain perfect clearness in our thoughts of an object, then, we need only consider what conceivable effects of a practical kind the object may involve — what sensations we are to expect from it, and what reactions we must prepare.