• H. A. E. Keitz
Part of the Philips Technical Library book series


The natural phenomenon which we know as light governs to a large extent all our activities; it is therefore not surprising that ever since the earliest times man has endeavoured to produce artificial light. Sources of such light have in the course of time been evolved, from the primitive wood-fire by way of oil lamps, candles, paraffin and gas lamps in numerous varieties, to the present-day electrical sources of light, the electric filament and gas discharge lamps.


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  1. 1).
    See for instance: P. J. Bouma: “Physical Aspects of Colour”. Philips Technical Library, Eindhoven 1948Google Scholar
  2. J. Bergmans, “Seeing Colours”, Philips Technical Library, Eindhoven, 1960.Google Scholar
  3. 2).
    In 1892 an abridged German translation of Lambert’s “Photometria” was published in the series “Ostwald’s Klassiker der exakten Wissenschaften” (nos 31, 32 and 33)Google Scholar
  4. 3).
    J. Funke and P. J. Oranje: “Gas Discharge Lamps”. Philips Technical Library, Eindhoven 1951Google Scholar
  5. 4).
    W. W. Elenbaas, “Fluorescent Lamps and Lighting”, Philips Technical Library, Eindhoven, 2nd edition, 1963.Google Scholar
  6. 5).
    Some publications on daylightingGoogle Scholar
  7. “The Lighting of Buildings”, Post-war Building Studies no. 12. H. M. Stationery Office, London 1944Google Scholar
  8. W. A. Allen, Trans. I.E.S. London, 11, 1946, 205–218. “The Basis of Daylighting Calculations”Google Scholar
  9. A. F. Dufton: “Protractors for the Computation of Daylight Factors” Building Research Technical Paper no. 28. H. M. Stationery Office, London 1946Google Scholar
  10. P. J. Waldram, J. Jun. Inst. Eng. 54, 1943, 27. “Daylight Illumination in Factories and Workshops”Google Scholar
  11. Prof. Dr. Ing. W. Arndt: “Praktische Lichttechnik”. Berlin 1938Google Scholar
  12. In Dutch: R. Swierstra: “Licht en Zicht” (“Light and Vision”), Tome II: “Bezonning en Beschaduwing” (“Sun-lighting and Shadow”) Haarlem 1954Google Scholar
  13. J. W. T. Walsh, “The science of day-light”, London, 1961.Google Scholar

Copyright information

© N. V. Philips’ Gloeilampenfabrieken, Eindhoven (The Netherlands) 1971

Authors and Affiliations

  • H. A. E. Keitz

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