Dictionary of Scientific Terms

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Strahan, 1869 - 325 pages
 

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Page 73 - ... the angle of reflection is always equal to the angle of incidence...
Page 259 - BXD' 125. A PROPORTION is an equality of ratios. Four magnitudes are in proportion, when the ratio of the first to the second is the same as that of the third to the fourth.
Page 169 - He first established the truth that a body plunged in a fluid loses as much of its weight as is equal to the weight of an equal volume of the fluid it displaces.
Page 112 - DEPRESSION of the pole; When a person sails or travels towards the equator he is said to depress the pole, because as many degrees as be approaches nearer the equator, so many, degrees will the pole be nearer the horizons.
Page 29 - The antecians are thow inhabitants of the earth, under the same meridian, and at the same distance from the equator ; but on opposite sides, one party north, the other south.
Page viii - That all whose necessities do not oblige them to leave school before the age of fourteen, should receive instruction in the elements of science as part of their general education. 5. That the reorganization of secondary instruction and the introduction of a larger amount of scientific teaching into secondary schools are urgently required, and ought to receive the immediate consideration of Parliament and of the country.
Page 266 - The rational or true horizon, is an imaginary plane, passing through the centre of the earth, parallel to the sensible horizon. It determines the rising and setting of the sun, stars and planets.
Page 211 - The inhabitants of the peninsula of Malacca, of Sumatra, Java, Borneo, Celebes, and the adjacent Asiatic islands ; of the Molucca, Ladrone, Philippine, Marian, and Caroline groups ; of New Holland, Van Diemen's Land, New Guinea, New Zealand, and the numberless islands scattered through the whole of the South Sea, belong to this division.
Page 192 - LINES are those coloured rings which appear when a pencil of polarized light is transmitted along the axis of a crystal, as mica or nitre, and is received in the eye after passing through a plate of tourmaline.
Page 101 - AN animal with a round, oval, or angular column, composed of numerous articulating joints, supporting at its summit a series of plates or joints forming a cup-like body containing the viscera, from whose upper rim proceed five articulated arms, dividing into tentaculated fingers, more or less numerous, surrounding the aperture of the mouth...

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