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  2. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Two conflicting safety issues affect water heater temperature—the risk of scalding from excessively hot water greater than 55 °C (131 °F), and the risk of incubating bacteria colonies, particularly Legionella, in water that is not hot enough to kill them. Both risks are potentially life-threatening and are balanced by setting the water ...

  3. Fire-Lite Alarms - Wikipedia

    en.wikipedia.org/wiki/Fire-Lite_Alarms

    Fire-Lite Alarms is an American company owned by Honeywell and based in Northford, Connecticut. Fire-Lite manufactures fire alarm control panels (FACPs), EVAC (emergency voice and alarm communicator) panels, manual pull stations, digital alarm communicators, and annunciators. Fire-Lite was founded in 1952 by Edward Levy, along with his son ...

  4. Flash evaporation - Wikipedia

    en.wikipedia.org/wiki/Flash_evaporation

    The water is heated and then routed into a reduced-pressure flash evaporation "stage" where some of the water flashes into steam. This steam is subsequently condensed into salt-free water. The residual salty liquid from that first stage is introduced into a second flash evaporation stage at a pressure lower than the first stage pressure.

  5. Flash boiler - Wikipedia

    en.wikipedia.org/wiki/Flash_boiler

    A flash boiler is a type of water-tube boiler. The tubes are close together and water is pumped through them. A flash boiler differs from the type of monotube steam generator in which the tube is permanently filled with water. In a flash boiler, the tube is kept so hot that the water feed is quickly flashed into steam and superheated.

  6. Infrared - Wikipedia

    en.wikipedia.org/wiki/Infrared

    Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with waves that are just longer than those of red light (the longest waves in the visible spectrum ), so IR is invisible to the human eye.

  7. Blinkenlights - Wikipedia

    en.wikipedia.org/wiki/Blinkenlights

    Blinkenlights on the NSA's FROSTBURG supercomputer from the 1990s Typical LED pattern of a Thinking Machines CM-5. The Connection Machine, a 65 536-processor parallel computer designed in the mid-1980s, was a black cube with one side covered with a grid of red blinkenlights; the sales demo had them evolving Conway's Game of Life patterns.

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