1,721,073 research outputs found
Effect of the Finite Memory Length of a Recorder in Evaluating its Frequency Response of from Step Response
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The Metrological Characterization of a Goniometer for the Analysis of Surface Properties
No full textAn accurate goniometer was constructed being a part of a system devoted to the measurement of reflecting properties of surfaces. By it a surface of the sample under test can be arbitrarily oriented with respect to the observing direction and the direction of the shooting light beam. The high performances (revolution angle uncertainty equal to 0.1deg) required as specifications for the construction are checked. Particular attention is used to analyze the orthogonality among the revolution axes of each goniometer components and their convergence in the goniometer center. The linearity error of each revolution motion is measured by using a differential method. It proves to be effective to highlight the small linearity deviation and to verify the uncertainty declared by the manufacture
Analysis of the Performance of a Goniometer for Studying Surface Reflection
No full textAn accurate goniometer was constructed, being a part of a system that is designed for the measurement of reflecting properties of surfaces. It can be used to orient a surface of the sample under test arbitrarily with respect to the observing direction and the direction of the shooting light beam. The high performance (revolution angle uncertainty equal to 0.1deg), which is required as a specification for the construction, is checked. Particular attention has been given to analyzing the orthogonality among the revolution axes of each goniometer component and their convergence in the goniometer center. The linearity error of each revolution motion has been measured by using a differential method, which proves to be effective in highlighting the small linearity deviation and verifying the uncertainty declared by the manufacturer
Comparison of different techniques for long term magnetic measurements in nuclear fusion research
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