Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
Dentro del libro
Resultados 1-5 de 34
Página 859
... solids . Biot's experiment . Wertheim's results , 880. Theoretical computation , 881. Reflection of sound , and Sondhaus ' experiment on refraction of sound , 882 , 883 . Echo , 884. Speaking and hearing trumpets , 885. Interference of ...
... solids . Biot's experiment . Wertheim's results , 880. Theoretical computation , 881. Reflection of sound , and Sondhaus ' experiment on refraction of sound , 882 , 883 . Echo , 884. Speaking and hearing trumpets , 885. Interference of ...
Página 861
... solid angle subtended by lens . Appearance presented to eye at focus , 1040. Field of view in astronomical telescope , 1041. Cross - wires , and their adjustment for preventing parallax , 1042 . Line of collimation , and its adjustment ...
... solid angle subtended by lens . Appearance presented to eye at focus , 1040. Field of view in astronomical telescope , 1041. Cross - wires , and their adjustment for preventing parallax , 1042 . Line of collimation , and its adjustment ...
Página 871
... solid , liquid , or gaseous , but it is necessary that it be elastic . A body vibrating in an absolute vacuum , or in a medium utterly destitute of elasticity , Iwould fail to excite our sensations of hearing . This assertion is ...
... solid , liquid , or gaseous , but it is necessary that it be elastic . A body vibrating in an absolute vacuum , or in a medium utterly destitute of elasticity , Iwould fail to excite our sensations of hearing . This assertion is ...
Página 872
... solids , some well - known facts prove that they transmit sound very perfectly . For example , light taps with the head of a pin on one end of a wooden beam , are distinctly heard by a person with his ear applied to the other end ...
... solids , some well - known facts prove that they transmit sound very perfectly . For example , light taps with the head of a pin on one end of a wooden beam , are distinctly heard by a person with his ear applied to the other end ...
Página 879
... , or a snow - storm , the liquid or solid particles present in the air produce innumerable reflections , in each of which a little sonorous energy is converted into heat . 873. Velocity of Sound in Air . — The propagation.
... , or a snow - storm , the liquid or solid particles present in the air produce innumerable reflections , in each of which a little sonorous energy is converted into heat . 873. Velocity of Sound in Air . — The propagation.
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