Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 861
... Solar microscope and magic lantern , 1019 , 1020 , pp . 1013-1030 . CHAPTER LXXI . VISION AND OPTICAL INSTRUMENTS . Construction of eye , 1021. Its optical working , 1022. Adaptation to distance , 1023 . Binocular vision . Data for ...
... Solar microscope and magic lantern , 1019 , 1020 , pp . 1013-1030 . CHAPTER LXXI . VISION AND OPTICAL INSTRUMENTS . Construction of eye , 1021. Its optical working , 1022. Adaptation to distance , 1023 . Binocular vision . Data for ...
Página 927
... solar rays , which , after passing through a 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 ...
... solar rays , which , after passing through a 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 ...
Página 994
... solar light on the centre O. The beam must be directed centrally through a short tube attached to the mirror , and to facilitate this adjustment the tube is furnished with a diaphragm with a hole in its centre . The arm Oa is movable ...
... solar light on the centre O. The beam must be directed centrally through a short tube attached to the mirror , and to facilitate this adjustment the tube is furnished with a diaphragm with a hole in its centre . The arm Oa is movable ...
Página 1028
... , Bromide of cadmium , • · 13 grammes 1.75 99 1.75 99 1.25 93 This mixture is poured over the plate , which is then immersed in a solution ( 10 per cent SOLAR MICROSCOPE . 1029 The 1019. Use of Lenses for 1028 LENSES .
... , Bromide of cadmium , • · 13 grammes 1.75 99 1.75 99 1.25 93 This mixture is poured over the plate , which is then immersed in a solution ( 10 per cent SOLAR MICROSCOPE . 1029 The 1019. Use of Lenses for 1028 LENSES .
Página 1029
... Solar Microscope . Magic Lantern . - In the solar microscope , a convex lens of short focal length is employed to throw upon a screen a highly - magnified image of a small object placed a little beyond the principal focus . As the image ...
... Solar Microscope . Magic Lantern . - In the solar microscope , a convex lens of short focal length is employed to throw upon a screen a highly - magnified image of a small object placed a little beyond the principal focus . As the image ...
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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