Glow period for glow in the dark products
Glow in the dark products need to be charged by exposure to light in order to work. Once brought to a suitable light source, they begin to absorb this light energy. But the light energy is not stored in it like rechargeable batteries. Instead the light energy is absorbed and released at the same time. This release of light can only be seen in the dark. Hence the term “Glow in the Dark.”
Glow period (in hours) for our glow powders (the raw material), is displayed on our site at darkniteglow.com. This period refers to how long the products can glow in the dark, after a full charge.
This is where the confusion starts. Assuming you leave a glow product with the stated glow time of 8 hours, outdoors in the sun. Obviouslly it is going to get fully charged and glow for the stated period, provided it is brought in a dark place immediately. But if it is left outdoors, it would start discharging if the sun is blocked by clouds or during the time it takes for the sun to set. By the time the sun has completely set and it is dark, the glow product could have discharged half its light energy.
The main thing to take note off is that the glow period starts the moment the glow product is brought into a dark environment. Glow lifespan is a different topic altogether. Lifespan of the glowing effect is over 15 years. Meaning, you can re-charge it over and over again.
