منابع مشابه
Microwave Interferometer for Non-destructive Testing
A K-band microwave interferometer for non-destructive sensing of high frequency low amplitude (nm) vibration is demonstrated. This sensor uses direct-conversion receiver architecture with a phase shifter to adjust its sensitivity while varying the target distance. Detection of nanoscale vibration and laser-generated ultrasound waves through thin aluminum plate are measured and then compared wit...
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The Schrodinger paradox points out that quantum mechanics predicts a linear superposition of states even for macroscopic objects prior to measurement. However, at the macroscopic level of ordinary objects it has not been possible to maintain the phase correlations needed to demonstrate or disprove the reality of such a superposition of states as opposed to the mixture of states. Without such a ...
متن کاملDigital wavefront measuring interferometer for testing optical surfaces and lenses.
A self-scanned 1024 element photodiode array and minicomputer are used to measure the phase (wavefront) in the interference pattern of an interferometer to lambda/100. The photodiode array samples intensities over a 32 x 32 matrix in the interference pattern as the length of the reference arm is varied piezoelectrically. Using these data the minicomputer synchronously detects the phase at each ...
متن کاملPlanarity Testing in Parallel
We present a parallel algorithm based on open ear decomposition to construct an embedding of a graph onto the plane or report that the graph is nonplanar. Our parallel algorithm runs on a CRCW PRAM in logarithmic time with a number of processors bounded by that needed for finding connected components in a graph and for performing bucket sort.
متن کاملParallel testing of distributed software
The paper presents the experience of the use of parallel computing technologies to accelerate the testing of a complex distributed programming system such as Orbix 3, which is IONA’s implementation of the CORBA 2.1 standard. The design and implementation of the parallel testing system are described in detail. Experimental results proving the high efficiency of the system are given. q 2004 Elsev...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1958
ISSN: 0091-0635
DOI: 10.6028/jres.061.041