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Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
The Google logo appears in numerous settings to identify the search engine company. Google has used several logos over its history, with the first logo created by Sergey Brin using GIMP. A revised logo debuted on September 1, 2015. The previous logo, with slight modifications between 1999 and 2013, was designed by Ruth Kedar, with a wordmark ...
Short outline of Mesopotamia. Area of the Fertile Crescent, circa 7500 BC, with main archaeological sites of the Pre-Pottery Neolithic period. At that time, the area of Mesopotamia proper was not yet settled by humans. Mesopotamia ( Ancient Greek: Μεσοποταμία Mesopotamíā; Classical Syriac: ܒܝܬ ܢܗܪ̈ܝܢ, Bēṯ Nahrēn) means ...
The rainbow flag or pride flag is a symbol of LGBT pride and LGBT social movements. The colors reflect the diversity of the LGBT community and the spectrum of human sexuality and gender. Using a rainbow flag as a symbol of LGBT pride began in San Francisco, California, but eventually became common at LGBT rights events worldwide.
Royal Purple is an American manufacturer which produces lubricants for automotive, industrial, marine, and racing use. [2] It is known primarily for its line of synthetic Royal Purple Motor Oil products used in gasoline and diesel engines. [3] [4] [5] They also produce other fluids including gear oil, transmission fluid, power steering fluid ...
Arizona Diamondbacks. The Arizona Diamondbacks (colloquially the D-backs) are an American professional baseball team based in Phoenix, Arizona. The Diamondbacks compete in Major League Baseball (MLB) as a member of the National League (NL) West Division. The franchise was established on March 9, 1995, and began play in 1998 as an expansion team ...
Nazi concentration camp badges, primarily triangles, were part of the system of identification in German camps. They were used in the concentration camps in the German-occupied countries to identify the reason the prisoners had been placed there. [1] The triangles were made of fabric and were sewn on jackets and trousers of the prisoners.
Cave paintings and pictorial evidence suggest the existence of dress in the Paleolithic period, around 30,000 years ago, though these were skin drapes. Textile clothing came to notice around 27,000 years ago, while actual textile fragments from 7000 B.C. have been discovered by archeologists.