Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 28
n of the beam but only that segmentof it which lay to the drivers right-handside. Any device, therefore, which wouldresult in cutting down this right-hand topsegment would entirely screen fromdazzle anyone approaching the car pro-vided he kept to the left of the road. Ithad been found jjossible to… … This particular photograph was takenwith two motor-car he^d-lights whichtogether over the main portion of thebeam were equivalent to 1,400 candles.In the obscured segment, however, this THE ILLUMIXATIXG ENGINEER (jan.) intensity was reduced to 14 candles with-out any appreciable diminution of the…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
