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  2. Vortex ring state - Wikipedia

    en.wikipedia.org/wiki/Vortex_ring_state

    The vortex ring state (VRS) is a dangerous aerodynamic condition that may arise in helicopter flight, when a vortex ring system engulfs the rotor, causing severe loss of lift. Often the term settling with power is used as a synonym, e.g., in Australia, the UK, and the US, [ 2 ] [ 3 ] [ 4 ] but not in Canada, which uses the latter term for a ...

  3. Polar vortex - Wikipedia

    en.wikipedia.org/wiki/Polar_vortex

    The term polar vortex can be used to describe two distinct phenomena; the stratospheric polar vortex, and the tropospheric polar vortex. The stratospheric and tropospheric polar vortices both rotate in the direction of the Earth's spin, but they are distinct phenomena that have different sizes, structures, seasonal cycles, and impacts on weather.

  4. Church Militant (website) - Wikipedia

    en.wikipedia.org/wiki/Church_Militant_(website)

    The Church Militant is not a Church apostolate according to a June 2020 press statement by the Archdiocese of Detroit: [9] "During the late afternoon hours of June 11, 2020, the Archdiocese of Detroit was made aware that Church Militant, an organization located in southeast Michigan, published racist and derogatory language in reference to the Archbishop of Washington D.C., Wilton D. Gregory.

  5. Copper zinc water filtration - Wikipedia

    en.wikipedia.org/wiki/Copper_zinc_water_filtration

    Copper zinc water filtration is a high-purity brass water filtration process that relies on the redox potential of dissolved oxygen in water in the presence of a zinc anode and copper cathode.

  6. Helikon vortex separation process - Wikipedia

    en.wikipedia.org/wiki/Helikon_vortex_separation...

    The Helikon vortex separation process is an aerodynamic uranium enrichment process designed around a device called a vortex tube. Paul Dirac thought of the idea for isotope separation and tried creating such a device in 1934 in the lab of Peter Kapitza at Cambridge. [ 1 ]

  7. Vortex Bladeless - Wikipedia

    en.wikipedia.org/wiki/Vortex_Bladeless

    Vortex Bladeless is currently working on two future products that are expected to be commercially available in 2021. The specified goals for each model are: [10] Vortex Nano – 1 metre (3.3 ft) high and 3 W nominal power output. Designed mainly to bring energy to off-grid locations for low-power systems, working along with solar panels.