Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 639
illuminated from many different directionsin order to be properly distinguished.In the street, where powerful units areplaced at considerable intervals, this canrarely be the case, and in some instancesthe dense shadows cast by moving vehiclesmay be very misleading to the pedestriancrossing the… … Fig. 8. —a lay-off sheet in the printing office,preferably illaminated by oblitiue light soas to show nji the impression of type. of an inclined board, lighted by anadjustable lamp in an opaque reflector,which is used by the printers of thisjournal when examining the * lay-off sheet. When the trial…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
