October 2015
Beginner to intermediate
432 pages
24h
English
A light source is nothing more than an object or device that produces light. When we discuss lamps, lighting designers are usually referring to a device that produces some manner of artificial light. There are a number of different light sources that have been used throughout history. A torch or campfire, candles or lanterns, arcs or electrical sparks, and finally the common incandescent lamp all form examples of light sources that have been used throughout recorded time. What is most important about light sources is the particular quantity and quality of light that a given source can create. While there are a number of natural ways of creating light, such as in the atomic reactions of the sun, the discharge ...