NASA NTRS · 19710017739
Fringe counter for interferometers Patent
Abstract
Digital sensor for counting fringes produced by interferometers with improved sensitivity and one photomultiplier tube to eliminate alignment problem
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Howell, W. E., Romanczyk, K. C.. 1971-03-30. Fringe counter for interferometers Patent. https://ntrs.nasa.gov/citations/19710017739
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