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The natural spectrum of Electromagnetic radiation obtained from the sun. The wavelength range is from the ultraviolet region (300 nm) to the near infrared region (700 nm).

Synonyms and Related Terms

natural light; Tageslicht (Deut.); lumière du jour (Fr.); luz solar (Port.)

Resources and Citations

  • ASTM, Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials, Annual Book of ASTM Standards, Section 14, General Methods and Instrumentation, ASTM, G113, 1371-1373, Sep-94
  • Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998