Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 862
... slits , and Maxwell's colour- box , 1072. Results of observation : substitution of similars ; personal differences ; any four colours are connected by one equation ; any five colours yield one match by taking means . Sum of colours ...
... slits , and Maxwell's colour- box , 1072. Results of observation : substitution of similars ; personal differences ; any four colours are connected by one equation ; any five colours yield one match by taking means . Sum of colours ...
Página 918
... slit , d grazes the edge of a wedge placed opposite . A rushing noise is thus produced , which con- tains , among its consti- tuents , the note to which the column of air in the pipe is capable of re- sounding ; and as soon as this ...
... slit , d grazes the edge of a wedge placed opposite . A rushing noise is thus produced , which con- tains , among its consti- tuents , the note to which the column of air in the pipe is capable of re- sounding ; and as soon as this ...
Página 938
... slit along its middle . The edges of this slit vibrate when air is forced through , and , by alternately opening and closing the passage , perform the part of a reed . The cavity of the mouth serves as a resonance chamber , and ...
... slit along its middle . The edges of this slit vibrate when air is forced through , and , by alternately opening and closing the passage , perform the part of a reed . The cavity of the mouth serves as a resonance chamber , and ...
Página 949
... slit , and receiving it on a screen of white paper . The illuminated area will be marked with coloured bands , called diffraction - fringes ; and if the slit is made narrower , these bands become wider . On the other hand , Colladon ...
... slit , and receiving it on a screen of white paper . The illuminated area will be marked with coloured bands , called diffraction - fringes ; and if the slit is made narrower , these bands become wider . On the other hand , Colladon ...
Página 959
... slit and the revolving mirror but between the revolving and the fixed . mirror , in such a position that the sum of the distances of the slit and lens from the revolving mirror was a very little ... slit from the slit itself was due to the.
... slit and the revolving mirror but between the revolving and the fixed . mirror , in such a position that the sum of the distances of the slit and lens from the revolving mirror was a very little ... slit from the slit itself was due to the.
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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