2020 LTS airport announcement and Iceland intro draft: Difference between revisions

Iceland's wet, changing, weather and a sun that is often low means a lot of chances to go rainbow hunting. Rainbows aren't just a texture in Flightgear, they are simulated. Like halos, rainbows are the ALS light simulation interacting with the weather simulation - rainbows are light bouncing towards you from rain droplets. Rain falls under specific clouds, and you may only see part(s) of a rainbow. Unlike halos, a rainbow isn't around the sun. A rainbow is a large circle around the point /opposite/ the sun from you, the anti-solar point. To locate this point draw an imaginary line from the sun to you. To see a rainbow, you should be between the rain volume and the sun. The intensity of rainbow depends on things like how heavy the rain is and the size of raindrops. Very light rain (drizzle) makes subtle rainbows. Flying when the sun is low increases your chance of spotting rainbows.