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Retrofitting is the addition of new technology or features to older systems. Retrofits can happen for a number of reasons, for example with big capital expenditures like naval vessels, military equipment or manufacturing plants, businesses or governments may retrofit in order to reduce the need to replace a system entirely.
The first LED was created by Soviet inventor Oleg Losev [9] in 1927, but electroluminescence was already known for 20 years, and relied on a diode made of silicon carbide. Commercially viable LEDs only became available after Texas Instruments engineers patented efficient near-infrared emission from a diode based on GaAs in 1962.
Engine House No. 12 is a former fire station in the Olde Towne East neighborhood of Columbus, Ohio. Today it primarily houses Gemüt Biergarten, a German restaurant, brewery, and biergarten, with its second story used for offices. [2] It is a contributing property to the Columbus Near East Side District, a national historic district established ...
This is a list of the National Register of Historic Places entries in Columbus, Ohio, United States.The National Register is a federal register for buildings, structures, and sites of historic significance.
Of all regions of Ohio, central Ohio has the largest Japanese national population. [4] According to the "2013 Japanese Direct Investment Survey" by the Consulate-General of Japan in Detroit, Dublin had 2,002 Japanese nationals and Columbus had 705 Japanese nationals, [5] giving those cities in the highest such populations in the state.
The Lockheed Martin/Boeing F-22 Raptor is an American twin-engine, all-weather, supersonic stealth fighter aircraft.As a product of the United States Air Force's Advanced Tactical Fighter (ATF) program, the aircraft was designed as an air superiority fighter, but also incorporates ground attack, electronic warfare, and signals intelligence capabilities.