green-yellow-red indicator

  • 81Color of chemicals — The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. What is seen by the eye is not the color absorbed, but the… …

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  • 82List of birds of Brunei — This is a list of the bird species recorded in Brunei. The avifauna of Brunei includes a total of 456 species, of which 4 are endemic, 1 has been introduced by humans, and 1 is rare or accidental. 25 species are globally threatened.This list s… …

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  • 83Flag — A flag is a piece of cloth, often flown from a pole or mast, generally used symbolically for signaling or identification. The term flag is also used to refer to the graphic design employed by a flag, or to its depiction in another medium.The… …

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  • 84Dubai Metro — مترو دبي Info Locale Dubai, United Arab Emirates Transit type Rapid transit …

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  • 85List of birds of Pakistan — This is a list of the bird species recorded in Pakistan. The avifauna of Pakistan includes a total of 745 species, of which 30 are rare or accidental. 4 species listed are extirpated in Pakistan and are not included in the species count.This list …

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  • 86List of Mini limited editions — Decals on the British Open limited edition Mini The Mini was offered in a number of limited editions that usually included a special combination of trim and badging, but some also included mechanical upgrades. Contents …

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  • 87Colors of chemicals — All chemical compounds have colors, and in some cases these are distinctive or useful for identification.The study of chemical structure by means of energy adsorption and release is generally referred to as spectroscopy. TheoryAll chemical… …

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  • 88Nottingham Corporation Tramways — This article is about trams between 1898–1938. For trams between 1875 1897, see Nottingham and District Tramways Company Limited. For trams from 2004 onwards, see Nottingham Express Transit. Tram passing Nottingham Victoria Railway Station… …

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  • 89Railway signalling — Not to be confused with Railway signal. A gantry of British semaphore signals seen from the cab of a steam locomotive Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being… …

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  • 90Aurora (astronomy) — Aurora Borealis redirects here. For other uses, see Aurora Borealis (disambiguation). Aurora Australis redirects here. For the ship, see Aurora Australis (icebreaker). For the book, see Aurora Australis (book). Northern lights redirects here. For …

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