Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 857
... lenses . BELFAST , March , 1838 . NOTE PREFIXED TO FIRST EDITION . IN the present Part , the chapters relating to Consonance and Dissonance , Colour , the Undulatory Theory , and Polarization , are the work of the Editor ; besides ...
... lenses . BELFAST , March , 1838 . NOTE PREFIXED TO FIRST EDITION . IN the present Part , the chapters relating to Consonance and Dissonance , Colour , the Undulatory Theory , and Polarization , are the work of the Editor ; besides ...
Página 860
... Construction for deviation ; Minimum deviation , 996. Con- jugate foci for minimum deviation , 997. Double refraction ; Iceland - spar , 998 , 999 , pp . 992-1012 . TABLE OF CONTENTS . vii CHAPTER LXX . LENSES . vi TABLE OF CONTENTS .
... Construction for deviation ; Minimum deviation , 996. Con- jugate foci for minimum deviation , 997. Double refraction ; Iceland - spar , 998 , 999 , pp . 992-1012 . TABLE OF CONTENTS . vii CHAPTER LXX . LENSES . vi TABLE OF CONTENTS .
Página 861
... lenses , 1011. Virtual images , 1012. Concave lens , 1013. Focometer , 1014 . Refraction at a single spherical surface , 1015. Refraction through a sphere , 1016 . Camera obscura , 1017. Photographic camera and photography , 1018 ...
... lenses , 1011. Virtual images , 1012. Concave lens , 1013. Focometer , 1014 . Refraction at a single spherical surface , 1015. Refraction through a sphere , 1016 . Camera obscura , 1017. Photographic camera and photography , 1018 ...
Página 887
... lens . If a watch be hung at some distance from it on one side , an ear held at the conjugate focus on the other side will hear the ticking . See also a later section on " Curved Rays of Sound " in the chapter on the " Wave Theory of ...
... lens . If a watch be hung at some distance from it on one side , an ear held at the conjugate focus on the other side will hear the ticking . See also a later section on " Curved Rays of Sound " in the chapter on the " Wave Theory of ...
Página 927
... lens L , is reflected , first , from a small mirror fixed on one of the branches of a tuning - fork D , and then from a second mirror M , which throws it on a screen E ; we can thus , by proper adjustments , form upon the screen a sharp ...
... lens L , is reflected , first , from a small mirror fixed on one of the branches of a tuning - fork D , and then from a second mirror M , which throws it on a screen E ; we can thus , by proper adjustments , form upon the screen a sharp ...
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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