LumiBrite
is the latest development in Seiko luminous paints. Conventional
luminous paints all used to rely on radioactive substances to generate
their afterglow. Then came fluorescent paints that glowed in the dark by
releasing light energy stored while the surrounding light was bright.
Their freedom from radioactivity and its potential hazards was a great
advantage, but their glow tended to be short-lived, fading rapidly as
the stored light-energy was discharged. LumiBrite is a dramatically
improved fluorescent luminous paint that quickly absorbs more of the
light-energy falling on it and glows brighter, for much longer, in the
dark. Safe and harmless to human beings and the environment, it is
completely free of radioactivity and can be used without
restriction--covering the entire dial, for instance.
A LumiBrite dial will glow at its full brightness after only brief
exposure to bright light. For instance, just ten minutes under normal
room lighting will often be enough--much less under sunlight. LumiBrite,
as its name suggests, starts glowing brightly in the dark, and fades
slowly. It is the ideal successor to both radioactive luminous paint and
conventional fluorescent paints.