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Green | |
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Population | 0 |
Green is the color between blue and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495–570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content.
During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers and the gentry, while red was reserved for the nobility. For this reason, the costume of the Mona Lisa by Leonardo da Vinci and the benches in the British House of Commons are green while those in the House of Lords are red.
Bắc Kạn | |
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State | Bac Kan Province |
Country | Vietnam |
Capital | |
Population | 0 |
Bắc Kạn (listen) is the capital of Bắc Kạn Province, Vietnam. The province's only city, it is bordered by Bạch Thông District to the north, north-east and west and Chợ Mới District to the south-east and south-west.The town traces its origins to a fort established in 1880 and upgraded to city on 11 March 2015.