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- W149101894 abstract "Abstract : Visual resolution in air and underwater were compared using Landolt Ring targets and a self-luminous, water- and pressure-proof target mount. SCUBA diving masks were worn during the tests, both in water and in air. Comparisons were also made while viewing above and below surface targets through a periscope from a surface position. In both instances, visual resolution in clear water was better than in air at the same actual target distance, when apparent luminances were equated for the two conditions. In most cases, the improvement while wearing the SCUBA mask fell below predictions based on the magnification of the target image underwater. The reasons for this were ascribed to fogging of the mask underwater, and the lack of sufficiently small targets for some observers. The difference in resolution between air and underwater viewing through the periscope was nearer to that predicted by theoretical computations." @default.
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- W149101894 date "1966-05-05" @default.
- W149101894 modified "2023-10-17" @default.
- W149101894 title "VISUAL RESOLUTION UNDERWATER" @default.
- W149101894 doi "https://doi.org/10.21236/ad0637818" @default.
- W149101894 hasPublicationYear "1966" @default.
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