"Undulatory" Quotes from Famous Books
 ... are using a four-and-a-half or five-inch telescope, and surrounded by one very thin ring of light, and the fragments, so to speak, of one or possibly two similar rings a little farther from the disk, and visible, perhaps, only by glimpses. These "diffraction rings" arise from the undulatory nature of light, and their distance apart as well as the diameter of the central disk depend upon the length of the waves of light. If the telescope is a really good one, and both object glass and eyepiece are properly adjusted, the disk will be perfectly round, slightly softer at the edge, ...
— Pleasures of the telescope • Garrett Serviss
... Darwin's hypothesis, therefore, subject to the production of proof that physiological species may be produced by selective breeding; just as a physical philosopher may accept the undulatory theory of light, subject to the proof of the existence of the hypothetical ether; or as the chemist adopts the atomic theory, subject to the proof of the existence of atoms; and for exactly the same reasons, ...
— Lectures and Essays • T.H. Huxley
... green in colour, with white blotches and sparse, coarse bristles, the animal has no comeliness, and yet when a herd frolics in the water, rising in unison with graceful undulatory movements for air, and the sunlight flashes in helioscopic rays from wet backs, the spectacle is rare and fine. Rolling and lurching along, gambolling like good-humoured, contented children, the herd moves leisurely to and from favourite feeding-grounds, occasionally splashing mightily ...
— The Confessions of a Beachcomber • E J Banfield
... other, and that these waves travel at a certain well-known velocity, seven times the circumference of the earth per second, taking eight minutes on the journey from the sun to the earth. This propagation in time of an undulatory disturbance necessarily involves a medium. If waves setting out from the sun exist in space eight minutes before striking our eyes, there must necessarily be in space some medium in which they exist and which ...
— Scientific American Supplement, No. 717, September 28, 1889 • Various
... And if this absurdity drives us back to primordial homogeneity, as before, we must remember that here, too, though not so evidently, we should have all the signs of an antecedent process that was non-existent. Life and death, corruption and integration, are parts of one undulatory process. Cut the wave where you will its curve claims to be finished in both directions and suggests a before as well as an after. If, in the very nature of things, the pendulum sways between confusion and order, chaos and cosmos, each extreme intrinsically ...
— The Faith of the Millions (2nd series) • George Tyrrell
... is just half the truth, and no more. He affirms a great deal that is true, and he denies a great deal which is equally true; which is the general characteristic of all systems not embracing the whole truth. So it is with the rectilinearity or undulatory motion of light;—I believe both; though philosophy has as yet but imperfectly ascertained the conditions of their alternate existence, or the laws by which ...
— Specimens of the Table Talk of S.T.Coleridge • Coleridge
... vocal organs as they form sounds. Examines the Helmholtz method for the analysis and synthesis of vocal sounds. Suggests the electrical actuation of tuning-forks and the electrical transmission of their tones. Distinguishes intermittent, pulsatory and undulatory currents. Devises as his first articulating telephone a harp of steel rods thrown into vibration by electro-magnetism. Exhibits optically the vibrations of sound, using a preparation of a human ear: is struck by the efficiency of a slight aural membrane. Attaches a bit of clock spring to a piece ...
— Little Masterpieces of Science: - Invention and Discovery • Various |
