Logarithmic scale is one in which the logarithms are plotted as against the linear scale where the values are plotted. That means in log scale, the distance 1-10 will be the same as 10-100, and, will be the same as 100-1000, and, so on. My preference is to use linear scale, though.
Green is the most common glow-in-the-dark color, but red, orange, and other colors also occur. How Glow in the Dark Stuff Works. Find Out What Things Really Glow under a Black Light. Make Glow-in-the-Dark Drinks. How to Make Glow in the Dark Ice. These Radioactive Elements Actually Do Glow in the Dark.
Glow and After-Glow. There are two stages to the light emitted by glow in the dark paints: Glow and After-Glow. When someone talks about how long the glow in the dark paint glows they are often including the phase referred to as after-glow. The glow phase occurs when the light is first turned off and the paint is emitting at full strength.