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  2. Optical landing system - Wikipedia

    en.wikipedia.org/wiki/Optical_landing_system

    This development, along with the others mentioned, contributed to the US carrier landing accident rate plummeting from 35 per 10,000 landings in 1954 to 7 per 10,000 landings in 1957. [ 3 ] The LSO, who is a specially qualified and experienced Navy pilot, provides additional input to the pilot via radios, advising of power requirements ...

  3. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    His invention controlled both the temperature and humidity, which helped maintain consistent paper dimensions and ink alignment at the printing plant. Later, together with six other employees, Carrier formed The Carrier Air Conditioning Company of America, a business that in 2020 employed 53,000 people and was valued at $18.6 billion. [30] [31]

  4. Thermostat - Wikipedia

    en.wikipedia.org/wiki/Thermostat

    A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.

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  6. Glossary of electrical and electronics engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_electrical_and...

    carrier current A system for communications where a carrier signal is impressed on power line wiring. carrier wave A radio wave that can be modulated (changed systematically) to carry information to a receiver. Category 3 cable A performance standard for unshielded twisted pair cables for analog voice and low speed data circuits within a building.

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  8. Air purifier - Wikipedia

    en.wikipedia.org/wiki/Air_purifier

    An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality.These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke.

  9. 1st Space Operations Squadron - Wikipedia

    en.wikipedia.org/wiki/1st_Space_Operations_Squadron

    The 1st Space Operations Squadron (1 SOPS) is a United States Space Force unit responsible for space-based space domain awareness.Located at Schriever Space Force Base, Colorado, the squadron operates the Space Based Space Surveillance system, the Advanced Technology Risk Reduction system, the Operationally Responsive Space-5 satellite, and the Geosynchronous Space Situational Awareness Program.