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A new code of practice for the lighting of traffic routes, based on the CIE recommendations for luminance design, is about to be introduced. This paper explains the way in which CIE recommendations have been applied to achieve a system which is simple in everyday use. Design tables, computed by...
A metal halide lamp shows higher intensity, greater luminous efficacy and longer life as compared with an incandescent lamp. However, a few minutes are needed for it to reach full light output after ignition. This limits the application of the metal halide lamp. A rapid-lighting miniature 35 W...
This paper presents a method of measuring a coloured sample giving numbers which correlate highly with the appearance of the sample when it is viewed under a defined illuminant. It is shown how these numbers, relating to the hue, lightness, and chroma of the sample, can be combined to provide a...
An international technical committee of the CIE has proposed a formula to predict the subjective impression of an outdoor floodlighting installation. The formula is based on appraisals of glare in football stadia and on football training grounds. It has since been validated for use in lighting...
Manchester House is a residential and holiday home run by the Jewish Blind Society for the blind and partially sighted. A significant proportion of it was relit in 1982. The new installations are characterised by a uniformly distributed high illuminance and freedom from discomfort glare. This...
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