Illuminating Instruments

Author : Peter John Turnbull Morris
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.38/5 ( download)

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Download or read book Illuminating Instruments written by Peter John Turnbull Morris and published by . This book was released on 2010 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 7th volume in the Artefacts series_a collaboration between the Smithsonian Institution, the Deutches Museum, and the London Science Museum_examines the role scientific instruments have played both in the pursuit of knowledge and as cultural artifacts.

Author : Kenneth T. Brown
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.34/5 ( download)

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Download or read book The Effects of Pure Red and Low-color-temperature White Instrument Lighting Upon Dark-adapted Visual Thresholds written by Kenneth T. Brown and published by . This book was released on 1952 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.

Author :
Publisher :
ISBN 13 :
Total Pages : 398 pages
Book Rating : 4.50/5 ( download)

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Download or read book Transactions of the Illuminating Engineering Society written by and published by . This book was released on 1907 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 450 pages
Book Rating : 4.49/5 ( download)

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Download or read book Illuminating Engineer written by and published by . This book was released on 1916 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 888 pages
Book Rating : 4.95/5 ( download)

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Download or read book The Illuminating Engineer written by and published by . This book was released on 1909 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Henry Banister
Publisher :
ISBN 13 :
Total Pages : 266 pages
Book Rating : 4.49/5 ( download)

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Download or read book Gas Manipulation, with a Description of the Various Instruments and Apparatus Employed in the Analysis of Coal and Coal Gas written by Henry Banister and published by . This book was released on 1867 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 786 pages
Book Rating : 4.34/5 ( download)

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Download or read book The Modern Hospital Year Book written by and published by . This book was released on 1919 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A buyer's reference book of supplies and equipment for hospitals and allied institutions" (varies).

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ISBN 13 :
Total Pages : 866 pages
Book Rating : 4.30/5 ( download)

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Download or read book Modern Hospital Year Book written by and published by . This book was released on 1919 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 784 pages
Book Rating : 4.2P/5 ( download)

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Download or read book The Hospital Purchasing File written by and published by . This book was released on 1919 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 826 pages
Book Rating : 4.84/5 ( download)

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Download or read book Good Lighting and the Illuminating Engineer written by and published by . This book was released on 1912 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: