Library of Useful Knowledge: Natural philosophy, Volume 2Baldwin and Cradock, 1829 - Physics |
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Page lxxvii
... ray of light on its passage from the sun to the mirror , and its reflection , have been spoken of as visible , though in neither case were those rays in a direction to enter our eyes . The fact is , that what is seen is the light ...
... ray of light on its passage from the sun to the mirror , and its reflection , have been spoken of as visible , though in neither case were those rays in a direction to enter our eyes . The fact is , that what is seen is the light ...
Page xc
... rays , no image would be formed , for the rays would be refracted parallel to each other ; and if the body were brought still nearer , the rays would diverge after refraction . The case of a convex lens is one of the most simple and the ...
... rays , no image would be formed , for the rays would be refracted parallel to each other ; and if the body were brought still nearer , the rays would diverge after refraction . The case of a convex lens is one of the most simple and the ...
Page xcii
... rays as they pass through it . The sun's rays may be collected to a focus by a lens in the same manner as they are by a concave mirror : in the first , the rays pass through the glass , and converge to a focus behind it ; in the latter ...
... rays as they pass through it . The sun's rays may be collected to a focus by a lens in the same manner as they are by a concave mirror : in the first , the rays pass through the glass , and converge to a focus behind it ; in the latter ...
Contents
POPULAR INTRODUCTIONS to NATURAL PHILOSOPHY By | i |
Page | xvii |
MARCET icx | 10 |
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acid action aperture appear ascer attraction axis ball battery body brass centre centre of gravity circle colours compass concave conductor convex convex lens copper cylinder degree diameter direction distance earth effect elec electric current electric fluid electroscope equal experiments Fahrenheit fixed flint glass focus force galvanic glass gravity heat horizontal hygrometer inch induction instrument intensity iron length lens lenses lever light magnet ment mercury metal motion move needle Newton north pole object object-glass obliquely observed opposite parallel particles passing perpendicular phenomena piece placed plane plate polarity portion position prism produced proportion pyrometer quantity rays reflected refraction refrangible rendered repulsion retina right angles ring round side south pole specific gravity spherical aberration steel substance surface telescope temperature theory thermometer thickness tion tricity tube velocity vertical voltaic weight wire zinc