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  2. Infinite switch - Wikipedia

    en.wikipedia.org/wiki/Infinite_switch

    An early switch operating by this principle was invented by Chester I. Hall of the General Electric Company, with a patent filed in 1921 and approved in 1924.Like the modern infinite switch, Hall's invention used a bi-metallic strip, heated by a constant current, to break a connection after a given period of time.

  3. 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 ...

  4. ecobee - Wikipedia

    en.wikipedia.org/wiki/Ecobee

    The thermostats are controlled by using the built-in touchscreen, web portal, or app available for iOS, Android, and the Apple Watch. [3] Other devices are controlled solely through the app or web portal. The thermostat or camera acts as a smart home hub for their other devices. The light switches do not require a thermostat or camera but do ...

  5. 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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  7. Traveling with a pet on Amtrak is a breeze. Especially for ...

    www.aol.com/traveling-pet-amtrak-breeze...

    The combined weight of the dog or cat and their carrier must be 20 pounds or less. The animal needs to be older than eight weeks. Pet carriers can be hard- or soft-sided and must fit in the seat ...