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  2. Attic fan - Wikipedia

    en.wikipedia.org/wiki/Attic_fan

    An attic fan installed underneath a roof A powered attic ventilator , or attic fan , is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used.

  3. Passive ventilation - Wikipedia

    en.wikipedia.org/wiki/Passive_ventilation

    A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.

  4. T-44 - Wikipedia

    en.wikipedia.org/wiki/T-44

    The turret roof had a raised commander's cupola on the left and loader's hatch on the right with a low dome-shaped ventilator behind it. The turret was moved with an electric motor. The front armour of the turret was 120 mm thick while the side armour was 75 mm thick.

  5. Windcatcher - Wikipedia

    en.wikipedia.org/wiki/Windcatcher

    In the center, a shuksheika (roof lantern vent), used to shade the qa'a below while allowing hot air rise out of it. [16] The windcatcher can function in two ways: directing airflow using the pressure of wind blowing into the windcatcher, or directing airflow using buoyancy forces from temperature gradients (stack effect).

  6. Aviation obstruction lighting - Wikipedia

    en.wikipedia.org/wiki/Aviation_obstruction_lighting

    Aircraft warning lights at the Mannheim telecommunications tower, in the background the bright torchlight of a steam cracker, in the distance warning lights from wind turbines Structure using a white strobe Structure using a Red/White Strobe Closeup of an aircraft warning light on top of a highrise in Changzhou, China Structure using high-intensity white lights and a medium-intensity white strobe

  7. A construction worker who murdered his 76-year-old former ...

    www.aol.com/news/construction-worker-murdered-76...

    The 27-year-old gruesomly murdered the elderly woman in 2019 with ‘a hammer, a jab saw and a box cutter’

  8. 12 reasons you aren't losing weight even though you're eating ...

    www.aol.com/lifestyle/12-reasons-arent-losing...

    12. You're weighing yourself at different times of day. If you're discouraged by daily ups and downs on the scale, you should know it's normal for body weight to fluctuate throughout the day ...

  9. Ridge vent - Wikipedia

    en.wikipedia.org/wiki/Ridge_vent

    A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .