... headlight beams : a simple headlight employing no anti-dazzle device, a dipped and swivelled headlight, a headlight ... case, in which the road is assumed to be level and straight, may convenient! v be represented by a diagram such as Fig.
|Title||:||The terminology of illumination and vision|
|Author||:||Great Britain. Dept. of Scientific and Industrial Research. Illumination Research Committee|