Using black light paint11/19/2023 ![]() The smallest stars will glow for an hour or two. The main constellation stars will almost certainly glow for several hours. Glow in the dark stars painted on dark backgrounds and charged for 30 minutes by UV light will glow very bright as soon as you turn off the lamp but will start to fade pretty quickly. If painted using the brightest green or aqua paints then it might have after-glow all night. The Milky Way if painted with white will glow for an hour or less. The smallest stars will glow for many hours but probably less than 4. The main constellation stars will almost certainly glow all night. If you can install UV lights then you’ll get the best viewing. Glow in the dark stars painted on a white or light background charged for 30 minutes by UV light will glow the brightest and longest. Light and White Backgrounds and UV Light Source You can clearly see how the glow in the dark paint works best on the lighter colors and how it fades the fastest on the darker colors. Taken immediately after a 10 minute UV charge. The intention is to show how the paint loses its glow and not to demonstrate how long the paint actually glows. These images fade quickly due to setting the camera to a short exposure. ![]() Note that the actual glow is better than represented here. Here’s the above color sample taken in the dark at various times. It is the after-glow phase that separates good and bad glow in the dark paints. The after-glow phase is where the paint is still emitting light and is easily noticeable. To be honest most of the paints will lose 50% of their initial brightness within the first minute. The paint is losing brightness from the moment the light source is turned off. This is when the brightness of the paint is measured. The glow phase occurs when the light is first turned off and the paint is emitting at full strength. When someone talks about how long the glow in the dark paint glows they are often including the phase referred to as after-glow. There are two stages to the light emitted by glow in the dark paints: Glow and After-Glow. Under ideal conditions green and aqua glow in the dark paint will glow all night. How long does the glow in the dark paint glow? This is a reasonable question and it really depends on many factors. Our Super Green emits such a bright glow under UV that any light that enters the room on a sunny day can charge the glow in the dark paint so that they glow even with the shutters closed! ![]() This might pose a problem for some customers so it would be advisable to demo a sample by painting a couple stars on the ceiling for them to evaluate before doing the entire ceiling and having an issue later.Īnother thing to point out is that in a room with closed plantation shutters you might actually see the stars in the day. However, the larger stars will remain visible, certainly on darker ceilings. The smallest of stars will certainly be pretty invisible at more than a few feet. So you’ve probably read that glow in the dark paint is virtually invisible in the day. Some people create a daytime sky mural first by painting clouds then apply the glow in the dark paint to the areas where the clouds are.
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