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Elementary Treatise on Natural Philosophy, Volume 2
A 1821-1883 Privat-Deschanel
No preview available - 2016
angle of incidence beam beats body called centre colours concave mirror conjugate foci convex convex lens corresponding crystal curvature denote density direction displacement distance eclipse elasticity emitted employed equal experiment eye-piece flame focal length formula frequency of vibration fundamental note glass grammes harmonics Iceland-spar incident ray index of refraction interval inverted law of sines lens lenses liquid luminous point medium metres metres per second minimum deviation musical node normal number of vibrations object object-glass oblique observer obtained octave optical ordinary parallel particles pass pencil perpendicular pipe pitch placed plane mirror plate polarization portion position principal axis principal focus prism produced propagation rarefaction ratio reflected ray rotation screen seen slit sonorous spectra spectrum spherical string surface telescope temperature tion tone traversing tube tuning-fork undulation unison velocity of sound vertical vibrations per second virtual image visual angle wave-length waves Young's modulus