- this is a small fluorescent energy saving lamp. it has a special inner coating to produce deep purple light and large amounts of uv light.
- the purple glow of a black light is not the uv light itself, which is invisible, but visible light that escapes through the filter material in the glass case.
- by using the same technology as a fluorescent tube to generate light outputs, but with a much lower power requirement, running costs are reduced and life expectancy.
- these bulbs emit uva, the long-wave ultraviolet light and are intended for use in special situations. this can be easy for lighting effects such as discos, theatres, clubs, etc.
- the invisible uv light is reflected in the visible spectrum by fluorescent materials and dyes, e.g. white dresses glow brightly in the dark, fluorescent posters illuminate, fluorescent varnishes at the top. also suitable for curing pigments, paints, coatings and gels.
