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incoherent |
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incoherent [in′kōhir′ənt] Etymology: L, in, not, cohaere, to hold together 1 disordered; without logical connection; disjointed; lacking orderly continuity or relevance. 2 unable to express one's thoughts or ideas in an orderly, intelligible manner, usually as a result of emotional stress. coherent sources If light beams from two independent sources reach the same point in space, there is no fixed relationship between the phases of the two light beams and they will not combine to form interference effects. Such light waves are called incoherent. If, on the other hand, the two light beams are superimposed after reaching the same point by different paths but are both radiated from one point of a source, interference effects will be seen because the phase difference in the two beams is constant. The two virtual sources from which these two beams are apparently coming are called coherent sources and any rays in which there is a constant phase difference are called coherent rays. Prior to the advent of the laser, the only way in which one could obtain coherent rays was by dividing the light coming from a point source into two parts. See Young's experiment; holography; clinical maxwellian view system; optical coherence tomography. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Polanyi's critique of modern thought reveals its incoherencies. In spire of these incoherencies, and also because of them, the task Blum sets himself is to identify and interrogate the many dimensions (however inconsistent, faulty; ephemeral) of our use and notion of "racism" (and here he sets off the "inferiorizing" and "antipathy" features of racism as a working, legitimate core meaning. Several reviewers have noted Pasolini's strong interest in the poetry of Matthew's text, and the movie's close following of the gospel text heightens the viewer's awareness of its writerly incoherencies. |
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