Elementary Physiography: An Introduction to the Study of NatureLongmans, Green & Company, 1899 - 427 σελίδες |
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Σελίδα 5
... iron , gold , etc. , the pores are too minute to be detected by ordinary means . By squeezing and hammering a hollow globe of silver filled with water , the liquid has been made to ooze through . A mixture of 27 parts of water and 23 ...
... iron , gold , etc. , the pores are too minute to be detected by ordinary means . By squeezing and hammering a hollow globe of silver filled with water , the liquid has been made to ooze through . A mixture of 27 parts of water and 23 ...
Σελίδα 7
... iron are gradually changed into liquids by the heat of a furnace , and at very high tempera- tures they are converted into gases . Gaseous iron is known to exist in the sun . 1 A vapour is the gas of a substance that is a solid or ...
... iron are gradually changed into liquids by the heat of a furnace , and at very high tempera- tures they are converted into gases . Gaseous iron is known to exist in the sun . 1 A vapour is the gas of a substance that is a solid or ...
Σελίδα 8
... iron cannot be made to cohere thus , unless they are softened by heat and then hammered together . In the process of welding cohesion is thus brought into action . In general , cohesion is most powerful among the particles of solid ...
... iron cannot be made to cohere thus , unless they are softened by heat and then hammered together . In the process of welding cohesion is thus brought into action . In general , cohesion is most powerful among the particles of solid ...
Σελίδα 27
... iron . Weigh the iron in air , and suppose the weight is 15 ozs . Attach the iron to a fine thread , and weigh it in water . Let the weight in water be 13 ozs . Then by the principle of Archimedes the weight of an equal bulk of water ...
... iron . Weigh the iron in air , and suppose the weight is 15 ozs . Attach the iron to a fine thread , and weigh it in water . Let the weight in water be 13 ozs . Then by the principle of Archimedes the weight of an equal bulk of water ...
Σελίδα 28
... Iron Heavy spar Diamond Salt Coal 10'50 8.90 7.80 Ice 4'43 3'50 White fir Cork . 0.93 . 0'57 . 0'24 Mercury Bromine Sulphuric acid Milk Sea - water Specific Gravities of Liquids . Distilled water at 39 ° F. Distilled water at 32 ° F ...
... Iron Heavy spar Diamond Salt Coal 10'50 8.90 7.80 Ice 4'43 3'50 White fir Cork . 0.93 . 0'57 . 0'24 Mercury Bromine Sulphuric acid Milk Sea - water Specific Gravities of Liquids . Distilled water at 39 ° F. Distilled water at 32 ° F ...
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.