Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 862
... 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 , 1093. Principle of ...
... 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 , 1093. Principle of ...
Página 863
... nearly . = 30.48 centimetres , nearly . = 91.44 centimetres , nearly . 1 yard 1 statute mile = 160933 centimetres , nearly . More accurately , 1 inch = 2.5399772 centi- metres . AREA . 1 1 sq . inch 6.45 sq . cm . , nearly . sq . foot ...
... nearly . = 30.48 centimetres , nearly . = 91.44 centimetres , nearly . 1 yard 1 statute mile = 160933 centimetres , nearly . More accurately , 1 inch = 2.5399772 centi- metres . AREA . 1 1 sq . inch 6.45 sq . cm . , nearly . sq . foot ...
Página 864
... nearly . 1 oz . avoir . 2.78 x 104 dynes , nearly . 1 lb. avoir.4.45 x 105 dynes , nearly . 1 ton = 9.97 x 108 dynes , nearly . 1 gramme = 981 dynes , nearly . " 9 " " " 9 1 kilogramme = 9.81 x 105 dynes , nearly . WORK ( assuming g ...
... nearly . 1 oz . avoir . 2.78 x 104 dynes , nearly . 1 lb. avoir.4.45 x 105 dynes , nearly . 1 ton = 9.97 x 108 dynes , nearly . 1 gramme = 981 dynes , nearly . " 9 " " " 9 1 kilogramme = 9.81 x 105 dynes , nearly . WORK ( assuming g ...
Página 865
... nearly Fig . 592. - Vibration of Straight Spring . equal distance on the other side ; and it thus swings alternately from one side to the other through distances very gradually diminishing , until at last it comes to rest . Such ...
... nearly Fig . 592. - Vibration of Straight Spring . equal distance on the other side ; and it thus swings alternately from one side to the other through distances very gradually diminishing , until at last it comes to rest . Such ...
Página 867
... nearly in contact with a glass bell ( Fig . 593 ) . If a rosined fiddle - bow is then drawn over the edge of the bell , until a musical note is emitted , a series of taps are heard , due to the striking of the bell against the point . A ...
... nearly in contact with a glass bell ( Fig . 593 ) . If a rosined fiddle - bow is then drawn over the edge of the bell , until a musical note is emitted , a series of taps are heard , due to the striking of the bell against the point . A ...
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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