What is "green flash"

n. (context meteorology astronomy English) A rare phenomenon observed in morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash or ray of green light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere.

Green flashes and green rays are optical phenomena that sometimes occur right after sunset or right before sunrise. When the conditions are right, a green spot is visible above the upper rim of the disk of the sun. The green appearance usually lasts for no more than a second or two. Rarely, the green flash can resemble a green ray shooting up from the sunset (or sunrise) point. Green flashes occur because the atmosphere can cause the light from the sun to separate out into different colors. Green flashes are a group of phenomena which stem from slightly different causes, and therefore some types of green flashes are more common than others.

While observing at the Vatican Observatory in 1960 D.K.J. O'Connell produced the first color photographs of a green flash at sunset.

Green Flash (2008), AKA Beach Kings (US title), is a comedy/drama film starring David Charvet, Torrey DeVitto and Kristin Cavallari. Other stars of the film include Bree Turner, Christine Adams, Wilson Cruz and Matt Prokop. The film was directed by Paul Nihipali Jr. Producers are Joseph Barmettler, Cameron Dieterich and Bob Smiland.

A green flash is an optical phenomenon.

Green flash may also refer to:

• Green Flash (film), a 2008 comedy/drama
• Green Flash (song), by the Japanese idol group AKB48
• Green Flash Brewing Company, a brewery in California, USA

"Green Flash" is the 39th single by the Japanese idol girl group AKB48, released in Japan on March 4, 2015. This single was first revealed during the group's Request Hour 2015 concert.

The single sold 860,269 copies on the first day. It sold 1,001,393 copies in its first week, achieving number 1 on Oricon's Weekly Charts. This single is the 20th consecutive million seller single, and the 21st overall. This single is also the 26th consecutive one that topped Oricon's charts, breaking Ayumi Hamasaki's record of 25 consecutive singles.