What people are saying - Write a review
We haven't found any reviews in the usual places.
Its Behaviour and How it is Measured
6 other sections not shown
Other editions - View all
aluminium appearance artificial lighting average ballast bright building calculation candelas cathode ceiling cent circuit colour colour temperature conical surface control gear curve cut-off daylight factor dazzle diagram direction discharge lamp effect efficiency electric electrode example filament floodlighting fluorescent tubes flux emitted foot-lamberts give given Glare Index glass heat horizontal hot cathode Ilium illuminance important incandescent incandescent lamps installation intensity interior J. W. T. Walsh lanterns light distribution light output ratio light source lighting fittings lm ft-2 Lond London louvres lumens luminance luminosity luminous efficiency materials maximum measure mercury metal mounted optical particularly photopic vision plane polar curves radiation range reflected reflector road shape sky component sodium lamps solid angle spectral specular surface temperature Trans tubular fluorescent lamps tungsten usually vapour vitreous enamel voltage Waldram walls wavelength window zone