Background rejection in schlieren visualization |
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| Authors: | P.B. Nagy |
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| Affiliation: | Applied Biophysics Laboratory, Technical University Budapest, H-1111, Budapest, Hungary |
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| Abstract: | It was recently suggested that an image orthicon could be used as a two-dimensional array of lock-in amplifiers. This technique enables rejection of extraneous optical signals from images of periodic phenomena, and the suitability of the method to improve schlieren images of ultrasonic beams is verified by experimental results. |
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| Keywords: | ultrasonics schlieren visualization image orthicons |
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