Elementary Physiography: An Introduction to the Study of NatureLongmans, Green & Company, 1899 - 427 σελίδες |
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Σελίδα 4
... equal in volume to the cannon - ball has a less mass -- that is , contains a smaller quantity of matter . An equal volume of air would have a smaller mass than either . The masses of bodies are often compared by comparing their weights ...
... equal in volume to the cannon - ball has a less mass -- that is , contains a smaller quantity of matter . An equal volume of air would have a smaller mass than either . The masses of bodies are often compared by comparing their weights ...
Σελίδα 11
... equal to the weight of the substance burnt plus the weight of the oxygen taken from the air ( see par . 94 ) . Even in the growth of a tree , we know that all the additional matter that it gains comes from either the soil or the air ...
... equal to the weight of the substance burnt plus the weight of the oxygen taken from the air ( see par . 94 ) . Even in the growth of a tree , we know that all the additional matter that it gains comes from either the soil or the air ...
Σελίδα 13
... equal when their weights are equal , and often use the word weight in place of mass . Hence also the pound avoir- dupois is often called the unit of weight . 8. The Metric System . - The Metric system of units is a decimal system , in ...
... equal when their weights are equal , and often use the word weight in place of mass . Hence also the pound avoir- dupois is often called the unit of weight . 8. The Metric System . - The Metric system of units is a decimal system , in ...
Σελίδα 14
... equal I sq . cm .; 100 sq . cm . make I sq . dm . ; and so on . The metric unit of volume is a cubic metre , that is , a cube the length , breadth , and height of which are each one metre . Hence a table of cubic measure can be obtained ...
... equal I sq . cm .; 100 sq . cm . make I sq . dm . ; and so on . The metric unit of volume is a cubic metre , that is , a cube the length , breadth , and height of which are each one metre . Hence a table of cubic measure can be obtained ...
Σελίδα 15
... equal in volume to a cubic decimetre , and as a cubic decimetre contains 1000 cubic centimetres , it is easy to express the value of any measure of capacity in cubic centimetres . The metric unit of mass or weight ( see par . 7 ) is the ...
... equal in volume to a cubic decimetre , and as a cubic decimetre contains 1000 cubic centimetres , it is easy to express the value of any measure of capacity in cubic centimetres . The metric unit of mass or weight ( see par . 7 ) is 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.