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 in the dark clocks. Cool design and they seem to be a pretty durable clock. I just wish the description had mentioned that they glow in the dark all of time (as oppose to having to initiate a light) and that they are noisy, not loud but the constant tick is loud enough to keep a light sleeper awake. I bought them to use in my campers.