Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
Dentro del libro
Resultados 1-5 de 32
Página 862
... curvature of horizontal or nearly horizontal rays , 1085. Of inclined rays , 1086. Astronomical refraction , 1088 . Mirage , 1089. Curved rays of sound , 1090. Calculation of their curvature , 1091 . Diffraction fringes , 1092. Gratings ...
... curvature of horizontal or nearly horizontal rays , 1085. Of inclined rays , 1086. Astronomical refraction , 1088 . Mirage , 1089. Curved rays of sound , 1090. Calculation of their curvature , 1091 . Diffraction fringes , 1092. Gratings ...
Página 957
... curvature is in the axis of rotation , so that the beam is reflected back to the revolving mirror , and thence back to the hole at which it first entered. Fig . 650. - Wheel at Rest . Fig . 656. - Bouguer's Photometer .
... curvature is in the axis of rotation , so that the beam is reflected back to the revolving mirror , and thence back to the hole at which it first entered. Fig . 650. - Wheel at Rest . Fig . 656. - Bouguer's Photometer .
Página 977
... the reflection . The centre of the sphere ( C , Fig . 673 ) is called the centre of curvature of the mirror . If the mirror has a circular boundary. Fig . 673. - Principal Focus . Fig . 674. - Theory of Conjugate Foci . Fig. 62.
... the reflection . The centre of the sphere ( C , Fig . 673 ) is called the centre of curvature of the mirror . If the mirror has a circular boundary. Fig . 673. - Principal Focus . Fig . 674. - Theory of Conjugate Foci . Fig. 62.
Página 978
... curvature . The line A C is called the principal axis of the mirror , and any other straight line through C which meets the mirror is called a secondary axis . When the incident rays are parallel to the principal axis , the re- flected ...
... curvature . The line A C is called the principal axis of the mirror , and any other straight line through C which meets the mirror is called a secondary axis . When the incident rays are parallel to the principal axis , the re- flected ...
Página 980
... centre of cur- vature . This last result is obvious in itself ; for rays from the centre CONCAVE MIRROR . 981 of curvature are normal to the. Fig . 675. - Conjugate Foci . Fig . 676. - Virtual Focus . Fig . 677. 980 REFLECTION OF LIGHT .
... centre of cur- vature . This last result is obvious in itself ; for rays from the centre CONCAVE MIRROR . 981 of curvature are normal to the. Fig . 675. - Conjugate Foci . Fig . 676. - Virtual Focus . Fig . 677. 980 REFLECTION OF LIGHT .
Otras ediciones - Ver todas
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