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公开(公告)号：US3606548A
公开(公告)日：1971-09-20
申请号：US3606548D
申请日：1968-10-10
Applicant: NAT RES DEV
Inventor： DYSON JAMES
CPC classification number: G01N21/4133
Abstract: AN APPARATUS FOR MEASURING THE DISPERSION OF LIGHT DURING ITS PASSAGE THROUGH THE ATMOSPHERE IN WHICH A RAY OF LIGHT IS MODULATED BY A ROTATING CHOPPER. LIGHT OF DIFFERING WAVE-LENGTHS IN THE RAY IS CHOPPED AT DIFFERENT INSTANTS DUE TO THE LATERAL DISPLACEMENT OF IMAGES OF THE SOURCE OF THE RAY FORMED BY LIGHT OF DIFFERING WAVELENGTHS RESULTING FROM DISPERSION OF THE LIGHT BY THE ATMOSPHERE. THE PHASE DIFFERENCE OF THE MODULATIONS FOR TWO COLOURS, WHICH IS RELATED TO THE DISPERSION, IS MEASURED.
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