Physiography for Advanced StudentsMacmillan, 1898 - 483 pàgines |
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Physiography for Advanced Students (Classic Reprint) A. T. Simmons Previsualització no disponible - 2015 |
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amount angular appear astronomers atmosphere augite axis binary stars body carbon causes celestial celestial equator centre chemical colour comet cyclone density deposits depth described determined diameter direction distance earth earth's crust ecliptic energy equator ether waves EXPT fathoms feet felspars force Globigerina ooze gravity heat horizontal hornblende hygrometer igneous rocks inclined increase instrument Jupiter known latitude length light liquid magnetic Mars mass means measured Mercury meridian miles minerals monoclinic moon motion movement moving nebulæ needle observed occur ocean olivine orbit orthoclase parallax particles pendulum period Physiography for Beginners planet poles position pressure produced Prof proper motion radiation rainfall rays result revolution right angles right ascension rotation round the sun satellite seen sidereal period silicate solar stars strata substance sun's surface synodic period telescope temperature thermometer tidal tides tion tube velocity Venus vertical volcanic waves weight winds wire
Passatges populars
Pàgina 322 - Every particle of matter, in the universe, attracts every other particle with a force, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Pàgina 331 - Every body continues in its state of rest or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Pàgina 332 - The rate of change of momentum is proportional to the impressed force, and takes place in the direction in which the force acts.
Pàgina 318 - Change of motion is proportional to the impressed force, and takes place in the direction of the straight line in which the force acts.
Pàgina 79 - This aqueous vapour is a blanket more necessary to the vegetable life of England than clothing is to man. Remove for a single summer-night the aqueous vapour from the air which overspreads this country, and you would assuredly destroy every plant capable of being destroyed by a freezing temperature.
Pàgina 351 - Bessemer converter ; 146 times that of a calcium-light ; 3-4 times that of an electric arc. Brightness of a point on the sun's limb compared with that of a point near the center of the disk, 25 per cent. Heat received per minute from the sun upon a square metre, perpendicularly exposed to the solar radiation, at the upper surface of the earth's atmosphere (the solar constant), 25 calories.
Pàgina 411 - Cephei may be noted. Fifthly, we have a class of stars which during the greater part of the time remain unchanged in brightness, but at regular intervals lose in the course of a few hours a large part of their light, and regain it with equal rapidity. These changes appear to be repeated with the greatest regularity, so that the interval can be computed in some cases within a fraction of a second. Algol, or /3 Persei, is the most striking example of this class to which S Cancri and d Libra also belong.
Pàgina 23 - It is impossible, by the unaided action of natural processes, to transform any part of the heat of a body into mechanical work, except by allowing heat to pass from that body into another at a lower temperature.
Pàgina 110 - II., p. 17. colder surface of the ground, as in the case of our own west coasts in winter, where the land is colder than the sea surface. 3. The mixture of masses of hot and cold air.
Pàgina 293 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.