Elementary Physiography: An Introduction to the Study of NatureLongmans, Green & Company, 1899 - 427 σελίδες |
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Σελίδα 20
... varies directly according to the product of two masses . This is plain ; for if every particle exert its attractive influence , the more particles a body contains the greater will be the attraction . A body which contains twice as much ...
... varies directly according to the product of two masses . This is plain ; for if every particle exert its attractive influence , the more particles a body contains the greater will be the attraction . A body which contains twice as much ...
Σελίδα 21
... varies inversely as the square of the distance . This means that if for any two bodies the distance be doubled , the attraction between them is diminished four times ; if the distance be trebled , the force of attraction is diminished ...
... varies inversely as the square of the distance . This means that if for any two bodies the distance be doubled , the attraction between them is diminished four times ; if the distance be trebled , the force of attraction is diminished ...
Σελίδα 23
... varies , but its mass remains the same . variation would be shown by a graduated spring balance which measures the force directly exerted on a spring . It would not be shown by an ordinary pair of scales and weights , since any ...
... varies , but its mass remains the same . variation would be shown by a graduated spring balance which measures the force directly exerted on a spring . It would not be shown by an ordinary pair of scales and weights , since any ...
Σελίδα 45
... varies directly as the mass of the body multiplied by the square of the velocity , and inversely as the radius of its circular path . This shows that when a stone is whirled round by a string , the larger the stone , or the quicker it ...
... varies directly as the mass of the body multiplied by the square of the velocity , and inversely as the radius of its circular path . This shows that when a stone is whirled round by a string , the larger the stone , or the quicker it ...
Σελίδα 46
... varies inversely as the square of the distance , combined with a certain specific initial FIG . 22 . impulse , has been proved to explain the elliptical paths of the planets , and their varying velocity in different parts of the orbit ...
... varies inversely as the square of the distance , combined with a certain specific initial FIG . 22 . impulse , has been proved to explain the elliptical paths of the planets , and their varying velocity in different parts of the orbit ...
Συχνά εμφανιζόμενοι όροι και φράσεις
acid angle Antarctic Antarctic Circle Arctic Atlantic Atlantic Ocean atmosphere axis barometer body calcium carbonate called carbon dioxide celestial sphere centre of gravity chemical circle coast colour compound cone crystals cubic centimetre currents density deposited depth dissolved distance earth eclipse ecliptic energy equal equator equinox evaporation expand Experiment fall feet felspar flask force gases glacier glass heat Hemisphere Hence horizon hydrogen igneous rocks inches increase iron land latitude lava layers length light limestone liquid magnet mass mercury meridian metal miles mineral motion move Ocean orbit oxide oxygen parallel particles passes plane pole pressure quantity rays refraction rise rocks rotation round silica solid solstice specific gravity stars steam substance sulphur sun's surface temperature thermometer Tropic Tropic of Cancer Tropic of Capricorn tube unit vapour velocity vertical volcano volume weight winds
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.