Rainbow flag number of non-cooperative groups led to confusion in several countries around the world. Another variation of rainbow flag is used by Jewish Autonomous Oblast, situated in the Far Eastern Federal District of Russia, by the Chinese border. Proportions 2:3. Adopted first of October 1996. The Jewish Autonomous Oblast has a flag with a seven-colour rainbow. The number of colours is meant to symbolize the seven-branched Jewish Menorah. The rainbow flag was popularized as a symbol of the gay community by San Francisco artist Gilbert Baker in 1978. The different colors are often associated with "diversity" in the gay community (but
Rainbow Any distinct bands perceived are an artefact of human colour vision, and no banding of any type is seen in a black-and-white photo of a rainbow, only a smooth gradation of intensity to a maximum, then fading towards the other side. For colours seen by the human eye, the most commonly cited and remembered sequence is Newton's sevenfold red, orange, yellow, green, blue, indigo and violet, remembered by the mnemonic "Richard Of York Gave Battle In Vain" (ROYGBIV). Rainbows can be caused by many forms of airborne water. These include not only rain, but also mist, spray, and airborne dew.