Origin and Meaning of Oluwa. What does the name Oluwa mean? Pronunciation, Variants and Shortened forms of the African Boy name Oluwa.
Often, the green color lasts for a second, thus it is called a green flash. It is usually seen over a distant horizon such as an ocean or a prairie. The sky must be clear and free of clouds all the way down to the horizon. There are several different mechanisms that produce green flashes. I'll start with one common misconception that the green flash is due to a color afterimage then move on to a discussion of the atmospheric optics that produces the simplest Green Flash.
There are three causes of green pool water. The first is a lack of chlorine. Without chlorine the pool water will quickly start to grow algae and turn green. Water without chlorine, especially if it has an algae bloom, is unsafe to swim in, and can be a breeding ground for mosquitoes and other insects. The second thing that causes pool water to look green (or yellow) is pollen.