Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 903
... traversing a dial marked with 100 divisions . Each revolution of the perforated plate causes this hand to advance one division . A second toothed - wheel is driven inter- mittently by the first , advancing suddenly one tooth whenever ...
... traversing a dial marked with 100 divisions . Each revolution of the perforated plate causes this hand to advance one division . A second toothed - wheel is driven inter- mittently by the first , advancing suddenly one tooth whenever ...
Página 958
... traversing the water than in traversing the same length of air . This result , as we shall have occasion to point out later , is very important as confirming the undulatory theory and disproving the emission theory of light . In Fig ...
... traversing the water than in traversing the same length of air . This result , as we shall have occasion to point out later , is very important as confirming the undulatory theory and disproving the emission theory of light . In Fig ...
Página 977
... traversing a graduated arc PQ . When the two mirrors are parallel , the index is at P , the zero of the graduations , and a ray H'B incident on B parallel to H A , will be reflected first along BA , and then along AT , the continuation ...
... traversing a graduated arc PQ . When the two mirrors are parallel , the index is at P , the zero of the graduations , and a ray H'B incident on B parallel to H A , will be reflected first along BA , and then along AT , the continuation ...
Página 1015
... traversing the lens ; and conversely , every ray which , in its course through the lens , traverses the point C , has parallel directions at incidence and emergence . The point C which possesses this remarkable property is called the ...
... traversing the lens ; and conversely , every ray which , in its course through the lens , traverses the point C , has parallel directions at incidence and emergence . The point C which possesses this remarkable property is called the ...
Página 1030
... traverses another system of lenses , placed at such a distance from the object as to throw a highly - magnified image of it on a screen . The whole arrangement is called the electric or photo - electric microscope . The magic lantern is ...
... traverses another system of lenses , placed at such a distance from the object as to throw a highly - magnified image of it on a screen . The whole arrangement is called the electric or photo - electric microscope . The magic lantern is ...
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Términos y frases comunes
achromatic analyser angle of incidence beam body bright lines called centimetres centre coincidence colours concave mirror conjugate foci convex convex lens crystal curvature denote diameter direction distance employed equal experiment eye-piece flame focal length frequency of vibration fundamental note glass harmonics Hence Iceland-spar incident ray index of refraction interval inverted law of sines lens lenses luminous point magnifying power medium metres minimum deviation nearly node normal number of vibrations object object-glass oblique observer obtained octave optical ordinary parallel particles pencil perpendicular pipe pitch placed plane mirror plate polarization portion position principal axis principal focus prism produced propagation radius rarefaction ratio reflected rays refrangibility represented retina rotation screen seen side slit solar spectra spectrum spherical string subtends surface telescope tion tone traversing tube undulation velocity of sound vertical vibrations vibrations per second violet virtual image visual angle wave-front wave-length waves