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Undulatory   Listen
adjective
Undulatory  adj.  Moving in the manner of undulations, or waves; resembling the motion of waves, which successively rise or swell rise or swell and fall; pertaining to a propagated alternating motion, similar to that of waves.
Undulatory theory, or Wave theory (of light) (Opt.), that theory which regards the various phenomena of light as due to undulations in an ethereal medium, propagated from the radiant with immense, but measurable, velocities, and producing different impressions on the retina according to their amplitude and frequency, the sensation of brightness depending on the former, that of color on the latter. The undulations are supposed to take place, not in the direction of propagation, as in the air waves constituting sound, but transversely, and the various phenomena of refraction, polarization, interference, etc., are attributable to the different affections of these undulations in different circumstances of propagation. It is computed that the frequency of the undulations corresponding to the several colors of the spectrum ranges from 458 millions of millions per second for the extreme red ray, to 727 millions of millions for the extreme violet, and their lengths for the same colors, from the thirty-eight thousandth to the sixty thousandth part of an inch. The theory of ethereal undulations is applicable not only to the phenomena of light, but also to those of heat.






Collaborative International Dictionary of English 0.48








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"Undulatory" Quotes from Famous Books



... present. Up to a time quite within the memory of a generation still on the stage, two hypotheses about the nature of light very unequally divided the scientific world. But the small minority has already prevailed: the emission theory has gone out; the undulatory or wave theory, after some fluctuation, has reached high tide, and is now the pervading, the fully-established system. There was an intervening time during which most physicists held ...
— Darwiniana - Essays and Reviews Pertaining to Darwinism • Asa Gray

... energetic faculties of human nature. This, however, does not make them suspect the motives or the habitual morality of those who remain in the creed in which they were nurtured. The difference is a difference of opinion, as purely as if we refused to accept the undulatory theory of light; and we treat it as such. Then reverse this. Why is it any more impossible for those who remain in the theological stage, who are not in the smallest degree sceptical, who in their ...
— On Compromise • John Morley

... suddenly changing its horizontal for a vertical direction, it burst upward. The whole earth heaved with a sudden pang; it then gave a backward bound, even as a vessel shipping a sea. The motion then became undulatory, and spread far and wide as the report of a cannon, awakening every echo in the mountain. There was a rattle and clatter in the town, as if of a thousand wagons shooting down paving stones. The Ursuline steeple waved in the air like a reed vexed by the blast. ...
— Harper's New Monthly Magazine, Volume 2, No. 12, May, 1851. • Various

... loveliness from door to door, have changed with the changing times. The loveliness is perhaps more striking, less distinctive; with the flower-like heads have passed the old grace and the old dependence, and the undulatory walk has quickened into buoyant briskness. It is all modern—as modern as the red brick walls that are building where a quaint ...
— The Voice of the People • Ellen Glasgow

... more indistinct, and at length scarcely perceptible. No perfectly distinct beat of the heart was felt, but a quick undulating motion, not corresponding with the pulse at the wrist. Three days before death the arteries assumed this undulatory motion, corresponded with the motion of the heart, and, for forty-eight hours, lost the irregularity ...
— Cases of Organic Diseases of the Heart • John Collins Warren

... in Paris; wrote largely on physical subjects; his "Memoir" on the theory of the waves suggested the undulatory theory of light; professor of Astronomy at Paris; declined to take the oath of allegiance to Napoleon III., ...
— The Nuttall Encyclopaedia - Being a Concise and Comprehensive Dictionary of General Knowledge • Edited by Rev. James Wood

... distinguish the painted from the real cannons! The whole passage is extremely interesting, and is really one out of many examples we might give of the swift and simple manner in which the common-sense method solves the great problems of art. The book concludes with a detailed exposition of the undulatory theory of light according to the most ancient scientific discoveries. Mr. Collier points out how important it is for an artist to hold sound views on the subject of ether waves, and his own thorough appreciation of Science may be ...
— Reviews • Oscar Wilde

... and as it is in itself; or (which is the same thing) between the sound we immediately perceive, and that which exists without us. The former, indeed, is a particular kind of sensation, but the latter is merely a vibrative or undulatory ...
— Three Dialogues between Hylas and Philonous in Opposition to Sceptics and Atheists • George Berkeley

... the Ton-Welt, give me now more stimulus than the written Word; for music seems to contain everything in nature, unfolded into perfect harmony. In it the all and each are manifested in most rapid transition; the spiral and undulatory movement of beautiful creation is felt throughout, and, as we listen, thought is most clearly, because ...
— Memoirs of Margaret Fuller Ossoli, Vol. I • Margaret Fuller Ossoli

... when but an hour before they had been irresponsible madmen, temporarily cruelty-surfeited, they resumed their journey. Single file, each footstep of those who followed fair in the print of the leader, a long, long line of ghostly, undulatory shadows, forming the most treacherous deadly serpent that ever inhabited earth, they moved eastward until they reached the bank of the swift little river; then turned north, leaving the abandoned, desolated settlement, the ruined cornfields, as tokens of ...
— Where the Trail Divides • Will Lillibridge

... and shortly after seemed with difficulty to ascend the rising hill; for the elasticity of so vast a body of ice, of many leagues square, supported by a troubled sea, though in some places three or four yards in thickness, would, in some degree, occasion an undulatory motion not unlike that of a sheet of paper accommodating itself to the surface of a rippling stream. Noises were now likewise distinctly heard in many directions, like the report of cannon, owing to the bursting of ...
— MacMillan's Reading Books - Book V • Anonymous

... not know the nature of light. Neither the undulatory theory nor the quantum theory are adequate to explain all observed phenomena, and they seem to be mutually exclusive, since it would seem clear by definition that no one thing can be at the same time continuous and discontinuous. We know nothing of the ...
— Skylark Three • Edward Elmer Smith



Words linked to "Undulatory" :   undulant, undulation, undulatory theory



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