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ladaptable to fluorescent lamps, low-wattage reflector fixtures can be used very effectively iin the auditorium. Decorative color schemes ican be arranged that will be more pleasing Ithan that obtained with ordinary lighting i fixtures using high wattage lamps. As an (example, a 3-watt or 7-watt blue lamp equipped with a multifacet or diffusing reflector, can create a beautiful effect in arches, coves and luminaires which ordinarily would require the use of a standard 40-watt filament lamp. This holds true not only for red and orange, but also for blending colors such as red and blue to make a purple effect. A 3-watt red should be used with a 7-watt blue to equalize the light output, as red is a color that has more light transmission value and it must be used with a higher rated blue, which has a lower transmission characteristic. Yellows, greens and orange color are the same, but care must be taken that the proper wattage and sizes are used to get a warm and pleasing effect.
Fixtures of this low-wattage type can be also applied efficiently to marquee and other sign lighting. For outdoor use, the protective housing reduces the chances of lamp breakage due to weather conditions. However, with the present 60 watt limitation on marquee lighting, these fixtures usually should not be arranged in colors.
EXAMPLE OF COST REDUCTION
Low-wattage fixtures will reduce the demand load charge and current consumption in theatre lighting. For example, let us say that 4,000 lamps of 25 watt capacity each ire used throughout the theatre, consuming 100,000 watts (4000x25), or 100 kilowatts per hour. This would create a demand load )f 100 kilowatts per hour; assume the charge s $2 per kilowatt ; the cost would be $200 3er month. By substituting low-wattage reflector fixtures and using 7 and 10-watt bulbs, :he 100 kilowatt load could be reduced to 1-0 kilowatts without reducing the overall llumination. In this case, there would be a saving of 60 kilowatts, and the demand load rharge would drop to $120 per month.
that brushes just used in oil paint, enamel or varnish should be cleaned immediately with turpentine?
that brushes used in shellac or alcohol stain should be cleaned with alcohol only?
that brushes used in lacquer should be cleaned with lacquer thinner, preferably the same kind of thinner as used on the job?
that brushes used in water-thinned paint should be cleaned with water only?
that each brush, after cleaning, should always be thoroughly dried before it is stored away?
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"Ways and Means" continued on next page BETTER THEATRES, APRIL 7, 1945
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