Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 862
... means . Sum of colours analogous to resultant of forces . Mean analogous to centre of gravity , 1073. Cone of colour . Hue , depth , and brightness . Complemen- taries . All hues except purple are spectral , 1074. Three primary colour ...
... means . Sum of colours analogous to resultant of forces . Mean analogous to centre of gravity , 1073. Cone of colour . Hue , depth , and brightness . Complemen- taries . All hues except purple are spectral , 1074. Three primary colour ...
Página 871
... mean the recurrence of precisely similar states at equal intervals of time , so that the movements exactly repeat them ... means of the handle the hammer will be seen to strike the bell , but the sound will be scarcely aud- ible . If ...
... mean the recurrence of precisely similar states at equal intervals of time , so that the movements exactly repeat them ... means of the handle the hammer will be seen to strike the bell , but the sound will be scarcely aud- ible . If ...
Página 876
... mean position , and comes for an instant to rest in its positions of greatest displacement , which are also positions of ... means of transverse vibrations , that is to say , by vibrations executed in a direction perpendicular to that in ...
... mean position , and comes for an instant to rest in its positions of greatest displacement , which are also positions of ... means of transverse vibrations , that is to say , by vibrations executed in a direction perpendicular to that in ...
Página 879
... mean working force , are both doubled , and thus the work which the elastic forces do during the movement from either extreme position to the centre is quadrupled . This work is equal to the energy of the particle in any part of its ...
... mean working force , are both doubled , and thus the work which the elastic forces do during the movement from either extreme position to the centre is quadrupled . This work is equal to the energy of the particle in any part of its ...
Página 882
... mean annual temperature of this country , the value of this expression is about 1110 , and at 86 ° F. or 30 ° C. it is about 1148. The increase of velocity is thus about a foot per second for each degree Fahrenheit . The humidity of air ...
... mean annual temperature of this country , the value of this expression is about 1110 , and at 86 ° F. or 30 ° C. it is about 1148. The increase of velocity is thus about a foot per second for each degree Fahrenheit . The humidity of air ...
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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