999 resultados para 1995_12071128 Optics-9
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Create a Telecommunication and Information Management Council.
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Desingation of the State Department of Public Safety as the State Highway Safety Agency and the Commissinoer of Public Safety as the Governor's representative for Highway Safety.
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Rescinds Executive Order #54 and replaces it with a new team called the Primary Iowa Harzard Mitigation Team to coordinate state response to natural and technological disaters.
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We present dual-wavelength Digital Holographic Microscopy (DHM) measurements on a certified 8.9 nm high Chromium thin step sample and demonstrate sub-nanometer axial accuracy. We introduce a modified DHM Reference Calibrated Hologram (RCH) reconstruction algorithm taking into account amplitude contributions. By combining this with a temporal averaging procedure and a specific dual-wavelength DHM arrangement, it is shown that specimen topography can be measured with an accuracy, defined as the axial standard deviation, reduced to at least 0.9 nm. Indeed, it is reported that averaging each of the two wavefronts recorded with real-time dual-wavelength DHM can provide up to 30% spatial noise reduction for the given configuration, thanks to their non-correlated nature. ©2008 COPYRIGHT SPIE
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Kirje
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Kirje
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Kirje 9.6.1964
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[Acte. 1662-08-09]
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Kirje
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Kirje
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Kirje 18.9.1973