Elementary Physiography: An Introduction to the Study of NatureLongmans, Green & Company, 1899 - 427 σελίδες |
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Αποτελέσματα 1 - 5 από τα 83.
Σελίδα 5
... piece of the unsized paper , called filter - paper , and , after folding it twice , open it out into a cone so that three folds of the paper are on one side and one fold on the other . Now place it in a glass funnel , and pour the ...
... piece of the unsized paper , called filter - paper , and , after folding it twice , open it out into a cone so that three folds of the paper are on one side and one fold on the other . Now place it in a glass funnel , and pour the ...
Σελίδα 8
... piece of lead cut in two may , however , be made to unite again by pressing strongly together the two freshly cut surfaces . But two pieces of iron cannot be made to cohere thus , unless they are softened by heat and then hammered ...
... piece of lead cut in two may , however , be made to unite again by pressing strongly together the two freshly cut surfaces . But two pieces of iron cannot be made to cohere thus , unless they are softened by heat and then hammered ...
Σελίδα 9
... substance in solution may always be thus recovered by the process of evaporation , though not by filtration . Experiment 6. - Place a piece of ice in a flask . Cork the flask and counterpoise it on a balance . Heat the ice gently.
... substance in solution may always be thus recovered by the process of evaporation , though not by filtration . Experiment 6. - Place a piece of ice in a flask . Cork the flask and counterpoise it on a balance . Heat the ice gently.
Σελίδα 10
... Experiment 8. - Take a small quantity of red phosphorus , and place it in a flask or a piece of hard glass tubing ( Fig . 6 ) . Close the vessel , and Indestructibility of Matter . I I weigh it with its ΙΟ Elementary Physiography .
... Experiment 8. - Take a small quantity of red phosphorus , and place it in a flask or a piece of hard glass tubing ( Fig . 6 ) . Close the vessel , and Indestructibility of Matter . I I weigh it with its ΙΟ Elementary Physiography .
Σελίδα 15
... down on finding its volume , or vice versa . The gram is the ordinary unit of weight for experiments in the laboratory ; it is equal to about 15 grains , or 2 oz . A 28 threepenny piece weighs about 1 gram . The unit of.
... down on finding its volume , or vice versa . The gram is the ordinary unit of weight for experiments in the laboratory ; it is equal to about 15 grains , or 2 oz . A 28 threepenny piece weighs about 1 gram . The unit of.
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.