Elementary Physiography: An Introduction to the Study of NatureLongmans, Green & Company, 1899 - 427 σελίδες |
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Αποτελέσματα 1 - 5 από τα 81.
Σελίδα
... CENTRE OF GRAVITY VII . WORK AND ENERGY VIII . HEAT . IX . LIGHT X. INTRODUCTORY CHEMISTRY • XI . OTHER COMMON ELEMENTS AND COMPOUNDS XII . THE MINERALS OF THE EARTH'S CRUST . XIII . THE CLASSIFICATION AND DESCRIPTION OF ROCKS PAGE 1 3 ...
... CENTRE OF GRAVITY VII . WORK AND ENERGY VIII . HEAT . IX . LIGHT X. INTRODUCTORY CHEMISTRY • XI . OTHER COMMON ELEMENTS AND COMPOUNDS XII . THE MINERALS OF THE EARTH'S CRUST . XIII . THE CLASSIFICATION AND DESCRIPTION OF ROCKS PAGE 1 3 ...
Σελίδα 9
... centre . The force which draws all bodies on or near the surface of the earth towards its centre is called terrestrial gravity , or simply gravity . The direction in which the force acts is called vertical , and a direction at right ...
... centre . The force which draws all bodies on or near the surface of the earth towards its centre is called terrestrial gravity , or simply gravity . The direction in which the force acts is called vertical , and a direction at right ...
Σελίδα 19
... centre of the circle to the two marks on the circumference which include the proper number of divisions or degrees . It should be noted that a degree is an angle , and not an arc of a circle , though the arcs on a divided circle are ...
... centre of the circle to the two marks on the circumference which include the proper number of divisions or degrees . It should be noted that a degree is an angle , and not an arc of a circle , though the arcs on a divided circle are ...
Σελίδα 20
... centre of the earth with twice the force- that is , it will have twice the weight of the other ; if its mass be five times as great , then it will be attracted with five times the force , that is , it will have five times the weight of ...
... centre of the earth with twice the force- that is , it will have twice the weight of the other ; if its mass be five times as great , then it will be attracted with five times the force , that is , it will have five times the weight of ...
Σελίδα 21
... centre , and since the equatorial diameter of the earth is greater than the polar diameter , the force of gravity at the poles must be greater than at the equator , bodies there being at a less distance from the centre . Thus , in the ...
... centre , and since the equatorial diameter of the earth is greater than the polar diameter , the force of gravity at the poles must be greater than at the equator , bodies there being at a less distance from the centre . Thus , in the ...
Συχνά εμφανιζόμενοι όροι και φράσεις
acid altitude angle Antarctic Antarctic Circle Arctic Arctic Circle Atlantic atmosphere axis barometer body calcium carbonate called carbon celestial equator celestial sphere centre circle coast currents declination delta density deposits depth distance earth earth's orbit east ecliptic equal equator equatorial equinox evaporation Experiment fall fathoms feet flask force glacier globe heat Hence horizon inches increase iron land latitude lava length liquid magnet mass mercury meridian miles moon motion mountain move needle night north pole Northern Hemisphere OCEAN oxide oxygen parallel particles passing plane position pressure quantity rain rays regions right ascension rise river rocks rotation round side sidereal day silica solar day specific gravity spring stars stream substance sun's surface temperature thermometer Tropic Tropic of Cancer Tropic of Capricorn tube valley vapour velocity vernal equinox vertical volcano weight winds winter zenith
Δημοφιλή αποσπάσματα
Σελίδα 20 - 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.
Σελίδα 37 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Σελίδα 313 - A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another.
Σελίδα 415 - All the rivers run into the sea; yet the sea is not full; unto the place from whence the rivers come, thither they return again.
Σελίδα 356 - The Ram, the Bull, the heavenly Twins, And next the Crab the Lion shines, The Virgin and the Scales ; The Scorpion, Archer and He-goat, The Man that holds the watering-pot And Fish with glittering tails.
Σελίδα 317 - The zenith distance of a body is its angular distance from the zenith, measured on the vertical circle passing through the body from 0° to 90°. It is the complement of the altitude.
Σελίδα 258 - When there is not enough of clouds and wind to afford this degree of protection, dew begins to form, and by preventing the temperature of any leaf or flower from sinking below the dew-point, saves them all from destruction, unless, as when hoar-frost appears, the dew-point itself is below the freezing-point.