Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. Atmospheric Optics "Light playing on water drops, dust or ice crystals in the atmosphere produces a host of visual spectacles — rainbows, halos, glories, coronas and many more. ... Find out where to see them and how they form." The site includes images and information about light rays and shadows, optical effects created by water droplets, ice halos, and high atmosphere phenomena. From a retired physicist and expert in atmospheric optics. http://www.atoptics.co.uk/ Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *