The physical characteristics of naturally turbid near-shore and inshore waters were simulated by substituting latex spheres for natural suspensoids. Four samples of artificially turbid waters were prepared to represent turbidity variations typical of coastal oceanic and harbor/bay waters. These were used as viewing media in laboratory experiments on display legibility. Systematic control of sizes and concentrations of particles suspended in the water enabled the assessment of light-scattering effects as a factor in display optimization for undersea system applications. Scattering phenomena were significant determinants of display legibility in harbor/bay but not coastal ocean viewing media.
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References
1.
Gescheider, G. A.Psychophysics--Method and theory. Hillsdale, NJ: Erlbaum, 1976.
2.
Hays, W. L.Statistics for the social sciences (2nd ed.). New York: Holt, Rinehart and Winston, 1973.
3.
Kent, P. R., and Weissman, S.Visual resolution under water. Groton, CT: U.S. Naval Submarine Medical Center, Submarine Base, Report No. 476, May, 1966.
4.
Kinney, J. A. S., Luria, S. M., and Weitzman, D. O.Visibility of colors underwater. Journal of the Optical Society of America, 1967, 47, (6), 802–809.
5.
Kinney, J. A. S., Luria, S. M., and Weitzman, D. O.Effect of turbidity on judgments of distance underwater. Perceptual and Motor Skills, 1969, 28, 331–333. (a)
6.
Kinney, J. A. S., Luria, S. M., and Weitzman, D. O.Visibility of colors underwater using artificial iIIumination. Journal of the Optical Society of America, 1969, 59 (5), 624–628. (b)
7.
Luria, S. M.Stereoscopic acuity underwater. Groton, CT: U.S. Naval Submarine Medical Center, Submarine Base, February, 1968.
8.
Luria, S. M., Kinney, J. A. S., and Weissman, S.Estimates of size and distance underwater. American Journal of Psychology, 1967, 80 (2), 282–286.
9.
Ono, H., O'Reilly, J. P., and Herman, L. M.Underwater distance distortion within the manual work space. Human Factors, 1970, 12, 473–480.
10.
Poock, G. K.Underwater display visibility as influenced by turbidity, display background color, and the color and intensity of illumination. Monterey, CA: Naval Postgraduate School, Report No. NPS 55PK72051A, July, 1972.
11.
Ross, H. E.Stereoscopic acuity under water. In J. N. Lythgoe and J. D. Woods (Eds.) Underwater Association Report 1966-67. London: T. G. Williams Industrial and Research Promotions, 1967. (a)
12.
Ross, H. E.Water, fog and the size-distance invariance hypothesis. British Journal of Psychology, 1967, 58, 301–313. (b)
13.
Ross, H. E.Adaptation of divers to curvature distortion under water. Ergonomics, 1970, 13, 489–499.
14.
Williams, J., and Vaughan, W. S., Jr.Using latex spheres to simulate naturally turbid waters. Human Factors, 1982, 24, 185–192.
15.
Winer, B. J.Statistical principles in experimental design (2nd ed.). New York: McGraw-Hill1971.
