Mobile color lighting at Barcelona exposition

From the standpoint of mobile color lighting, the International Exposition held this year at Barcelona, Spain, is the most exquisite display of its kind ever produced. It is particularly interesting as to the quantity of colored light employed and the extent of the area over which coordinated sequence is maintained, In length, this area is approximately one-third of a mile. and in width it averages 350 ft. Both as to colors and intensities, this widespread synchronized mobility is controlled through a multiplicity of circuits which appear hopelessly intricate until the systematic desing and arrangements are understood. The apparatus, to control automatically the changing colors, (5000-kw. connected load), cost approximately $250,000.00 exclusive of freight, erection, wiring, or the electric distribution system.