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angle of incidence |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson | 0.03 sec. |
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angle of incidence, the angle at which an ultrasound beam hits the interface between two different types of tissues, such as the facing surfaces of bone and muscle. The angle is also affected by the difference in acoustic impedance of the different tissues. 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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Bragg peaks from ground-and-polished alumina surfaces were investigated with 8 keV x rays at incidence angles from 0. The sine of the incidence angle on the boundary surface of the measure crystal should be lower than the quotient of the refractive index sample/crystal (figure 4): Currently available as a standard device is the SubWave IRCF ES22, with a 22nm edge shift for a change in incidence angle from 0(degree) to 30(degree), (greater than)93% average transmission from 420nm to 625nm, a cut-off dropping from (greater than)90% transmission to (less than)5% in less than 30nm centered around a half power point of 650nm +/- 10nm, and (less than)2% average transmission in the infrared from 675nm to 1000nm. |
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