The study involved using high - speed cameras to photograph laser - illuminated smoke particles in the air as the bats fly. (sciencedaily.com)
As it turns out, the size of smoke particles from the fires is precisely right for filtering out some colors while letting others through; the others being red, pink and orange. (treehugger.com)
The disk, which we see edge on, contains rock and ice fragments ranging in size from objects larger than houses to grains as small as smoke particles. (sciencedaily.com)