GLOW-IN-THE-DARK PIGMENT / POWDERS AND PAINTS
BRIGHTNESS AND CHARGING INFORMATION
The strength, brightness and
length of time of the glow is affected mainly by two
LIGHT SOURCE FOR CHARGING
Charging to a good brightness in the shortest
time, approximately 1 minute.
- Direct Sunlight
(pure and not through a glass window or reflected)
- Blacklight Tube
(long traditional tube or new energy saving ultraviolet type)
- UV LED's
- Cold cathode UV
Charging to reasonable results, after long
charge time of 10-20 minutes.
Bulbs - (long standard common tubes)
Fluorescent or CFL – spiral, tube (common power saving bulbs)
- Incandescent -
standard light bulb (not the power saving type)
Takes very long time to charge with poor results and not recommended.
LED's (not Ultraviolet specific ones)
- White or
Very good results can
be achieved with the new ultraviolet blacklight, low energy bulbs that plug in
to a standard light fitting. These are readily available from ebay and well worth investing in.
The actual colour of
the glow affects the brightness and length of glow time seen.
The brightness /
length of glow occurs in the following colour order,
from best to least.
All the colours have a
well defined colour and work effectively. They can clearly be seen in total
darkness once effectively charged and the eyes and brain are accustomed to
the light level.
- Green (considerably brighter than other colours)
Red (has a very strong sulphur
odour so use in a well-ventilated room)
- Purple / Violet
Item will show at its brightest level for up to
20 minutes once effectively charged, depending on the colour, and then settle
down to a duller brightness for many hours.
Once the initial brightness has dulled the item
will need to be viewed in a totally dark room.
Any ambient light will greatly take away the
glow perceived by the human eye.
The human eye that has moved in to a dark room
from a bright room will not see the glow as well as from a dimly lit or dark
room until the brain adjusts for the difference.
It is also advisable to use the blacklight
bulbs, as no major light change is experienced by the eye between the light
being turned on and off.
Pigment particles and background
- The glow in the dark pigment
particles remain as particles in the paint and do not dye the carrier
- Bright white backgrounds are
less likely to show the speckled appearance that can occur due to gaps
between the particles.
- Additional layers also help
fill these speckle gaps.
- White background will also
reflect the glow, improving performance.
- You should avoid using on dark backgrounds as
poor results will occur.