The Effects Of Pure Red And Low Color Temperature White Instrument Lighting Upon Dark Adapted Visual Thresholds
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The Effects Of Pure Red And Low Color Temperature White Instrument Lighting Upon Dark Adapted Visual Thresholds
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Author : Kenneth T. Brown
language : en
Publisher:
Release Date : 1952
The Effects Of Pure Red And Low Color Temperature White Instrument Lighting Upon Dark Adapted Visual Thresholds written by Kenneth T. Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Aeronautical instruments categories.
"The effects of pure red and low color temperature white flood lighting upon completely dark adapted visual thresholds have been determined. The red light was adjusted to brightness levels which pilots have been found to use as the minimal, normal, and maximal levels for night flying. For each brightness level of the red light, a brightness was found for the low color temperature white light at which aircraft instruments were equally legible under the two lighting systems. Both a simulated instrument panel and a pure white panel were used as viewing panels. Six subjects were tested under each lighting condition. A higher brightness proved necessary with the low color temperature white light than with the pure red light in order to attain equal legibility of instruments. Both lighting systems at all brightness levels caused small increases in visual thresholds above the completely dark adapted state. When the simulated instrument panel was illuminated at the normal brightness level, thresholds after viewing low color temperature white light were 0.15 log micro-microlamberts above thresholds after viewing pure red light. This value defines the approximate sacrifice in dark adaptation which would be made if white lights, operated at low voltage, were substituted for red lights in flood lighting aircraft instruments. The white lighting would also be more visible to dark adapted enemy observers. However, the white lighting system would make colors in the cockpit appear more natural, which would facilitate such tasks as map reading. When operated at normal voltage, the white lighting system could also provide high intensity illumination for special purposes such as thunderstorm flying, very high altitude daytime flight, and simulated instrument flying with the amber hood and blue goggles."--Abstract.
The Effects Of Pure Red And Low Color Temperature White Instrument Lighting Upon Dark Adapted Visual Thresholds
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Author : Kenneth T. Brown
language : en
Publisher:
Release Date : 1952
The Effects Of Pure Red And Low Color Temperature White Instrument Lighting Upon Dark Adapted Visual Thresholds written by Kenneth T. Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Aeronautical instruments categories.
"The effects of pure red and low color temperature white flood lighting upon completely dark adapted visual thresholds have been determined. The red light was adjusted to brightness levels which pilots have been found to use as the minimal, normal, and maximal levels for night flying. For each brightness level of the red light, a brightness was found for the low color temperature white light at which aircraft instruments were equally legible under the two lighting systems. Both a simulated instrument panel and a pure white panel were used as viewing panels. Six subjects were tested under each lighting condition. A higher brightness proved necessary with the low color temperature white light than with the pure red light in order to attain equal legibility of instruments. Both lighting systems at all brightness levels caused small increases in visual thresholds above the completely dark adapted state. When the simulated instrument panel was illuminated at the normal brightness level, thresholds after viewing low color temperature white light were 0.15 log micro-microlamberts above thresholds after viewing pure red light. This value defines the approximate sacrifice in dark adaptation which would be made if white lights, operated at low voltage, were substituted for red lights in flood lighting aircraft instruments. The white lighting would also be more visible to dark adapted enemy observers. However, the white lighting system would make colors in the cockpit appear more natural, which would facilitate such tasks as map reading. When operated at normal voltage, the white lighting system could also provide high intensity illumination for special purposes such as thunderstorm flying, very high altitude daytime flight, and simulated instrument flying with the amber hood and blue goggles."--Abstract.
Special Report
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Author : George Washington University. Human Resources Research Office
language : en
Publisher:
Release Date : 1957
Special Report written by George Washington University. Human Resources Research Office and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Military education categories.
A Bibliography Of Research Reports And Publication Issued By The Human Engineering Division April 1946 December 1970
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Author :
language : en
Publisher:
Release Date : 1972
A Bibliography Of Research Reports And Publication Issued By The Human Engineering Division April 1946 December 1970 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Human engineering categories.
Agard Conference Proceedings
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Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
language : en
Publisher:
Release Date : 1967
Agard Conference Proceedings written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Aeronautics categories.
Technical Information Pilot
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Author :
language : en
Publisher:
Release Date : 1952
Technical Information Pilot written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Science categories.
Asd Technical Report
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Author :
language : en
Publisher:
Release Date : 1958
Asd Technical Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Aeronautics categories.
Luminance Thresholds During Dark Adaptation Following Preadaptation To Cathode Ray Tube Displays
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Author : Robert M. Herrick
language : en
Publisher:
Release Date : 1952
Luminance Thresholds During Dark Adaptation Following Preadaptation To Cathode Ray Tube Displays written by Robert M. Herrick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Brightness perception categories.
With the identification of the position of a luminous dial pointer as the threshold criterion, luminance thresholds were determined at various times during dark adaptation following preadaptation to Cathode Ray Tube displays. Each display consisted of a vertical trace line which traversed the cathode Ray Tube screen at one of three rates. Dark adaptation curves, obtained after adaptation to the different displays are superimposed; initial thresholds are relatively low ( -2.0 log millilamberts); and dark adaptation is essentially complete in five minutes. The findings are interpreted to indicate to indicate that in certain Air Force applications, viewing such displays causes a definite temporary loss in the observer's ability to read instrument dials and to perceive objects external to the aircraft.
Aeronautical Charts Under Red Light
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Author : Mason N. Crook
language : en
Publisher:
Release Date : 1954
Aeronautical Charts Under Red Light written by Mason N. Crook and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Aeronautical charts categories.
"The general problem of designing charts for legibility under red cockpit light is examined in the context of related problems. The characteristics of charts and the techniques for presenting information on them are analyzed and evaluated in relation to possible methods for improving red light legibility. Several lines of research carried out under this project are reviewed, and two experimental charts are exhibited and descibed. Methods for improving red light legibility, within the framework of present size and space limitations and production techniques, are summarized."--Abstract.
A Bibliography Of Reports Issued By The Behavioral Sciences Laboratory
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Author : United States. 6570th Aerospace Medical Research Laboratories. Behavioral Sciences Laboratory
language : en
Publisher:
Release Date : 1962
A Bibliography Of Reports Issued By The Behavioral Sciences Laboratory written by United States. 6570th Aerospace Medical Research Laboratories. Behavioral Sciences Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Aviation medicine categories.