Abstract

Measurements of the spectral distribution of Australian daylight falling on a horizontal plane over the wavelength range 280–2800 nm have been made at two locations in southeastern Australia, one set of measurements in an urban environment and the other in the country. Each set has been subjected to characteristic vector analysis. The major differences between the results and those of northern hemisphere workers are a higher ultraviolet-to-visible ratio and a chromaticity locus slightly to the purple side of the full radiator locus.

© 1978 Optical Society of America

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