 "Lidar" (LIght raDAR) works as an optical analog to radar in the visible spectrum of light with advantages related to the smaller wavelengths of the laser pulse.Lidar ranges in wavelength from ultra-violet (0.3-0.45 µm) to visible (0.45-0.70 µm) to the infrared (1-15 µm).Lidar can detect much smaller particles than radar in the atmosphere (which cannot detect things smaller than cloud particles), and thus can be used for aerosol detection.