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analyzer angle of incidence beam beats body bright lines called centre colours concave mirror conjugate foci convex convex lens corresponding crystal curvature denote density diffraction direction displacement distance double refraction elasticity emitted employed equal experiment eye-piece flame focal length formula frequency of vibration fundamental note glass harmonics Iceland-spar incident ray index of refraction interval lens lenses light luminous point magnifying power medium minimum deviation musical naked eye node normal number of vibrations object object-glass observer obtained octave optical ordinary parallel particles pass perpendicular pipe pitch placed plate polarization portion position principal axis principal focus prism produced propagation rarefaction ratio reflected ray refrangibility represented retina rotation screen seen slit solar solid solid angle sonorous spectra spectrum spherical string surface telescope temperature tion tone transmitted traversing tube undulation velocity of sound vibrations vibrations per second violet virtual image visual angle wave-front wave-length waves
Page 1056 - SOUND: a Course of Eight Lectures delivered at the Royal Institution of Great Britain.
Page 928 - ... that the ratio of the sines of the angles of incidence and refraction is constant for refraction in the same medium, was effected by Snell and Descartes.
Page 1056 - Light and Electricity. Notes of Two Courses of Lectures before the Royal Institution of Great Britain.
Page 1054 - Illustrations. $1.50. 2. PHYSICS AND POLITICS; Or, Thoughts on the Application of the Principles of "Natural Selection" and "Inheritance
Page 1054 - On Cephalization ; or, Head-Characters in the Gradation and Progress of Life. Prof. SW JOHNSON, MA On the Nutrition of Plants. Prof. AUSTIN FLINT, Jr. MD The Nervous System and its Relation to the Bodily Functions.
Page 910 - R' P', SP, will have a constant ratio ; or the sines of the angles of incidence and refraction are in a constant ratio.
Page 1054 - The character and scope of this series will be best indicated by a. reference to the names and subjects included in the subjoined list, from which it will be seen that the cooperation of the most distinguished professors in England, Germany, France, and the United States, has been secured, and negotiations are pending for contributions from other eminent scientific writers. The works will be issued in New York, London, Paris, Leipsic, Milan, and St.
Page 1055 - Mond's process, as well as the many new and important applications of Bisulphide of Carbon. The manufacture of Soap will be found to include much detail. The Technology of Glass, Stoneware, Limes and Mortars, will present much of interest to the Builder and Engineer.
Page 1054 - Prof. MICHAEL FOSTER, MD Protoplasm and the Cell Theory. H. CHARLTON BASTIAN, MD, FRS The Brain as an Organ of Mind. Prof. AC RAMSAY, LL.D., FRS Earth Sculpture : Hills, Valleys, Mountains, Plains, Rivers, Lakes ; how they were Produced, and how they have been Destroyed. Prof.