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  2. Air ioniser - Wikipedia

    en.wikipedia.org/wiki/Air_ioniser

    An air ioniser (or negative ion generator or Chizhevsky's chandelier) is a device that uses high voltage to ionise (electrically charge) air molecules. Negative ions, or anions, are particles with one or more extra electrons, conferring a net negative charge to the particle. Cations are positive ions missing one or more electrons, resulting in ...

  3. Negative air ionization therapy - Wikipedia

    en.wikipedia.org/wiki/Negative_air_ionization...

    Negative air ionization therapy (NAIs) uses air ionisers as a non-pharmaceutical treatment for respiratory disease, allergy, or stress -related health conditions. The mainstream scientific community considers many applications of NAIs to be pseudoscience. [1][2][3][4][5][6] Many negative ion products release ozone, a chemical known to cause ...

  4. Negative air ions - Wikipedia

    en.wikipedia.org/wiki/Negative_air_ions

    Negative ion reaction equations. Negative air ions (NAI) are important air component, generally referring to the collections of negatively charged single gas molecules or ion clusters in the air. They play an essential role in maintaining the charge balance of the atmosphere. [1][2] The main components of air are molecular nitrogen and oxygen.

  5. Negative ion products - Wikipedia

    en.wikipedia.org/wiki/Negative_ion_products

    Negative ion products are products which claim to release negative ions and create positive health effects, although these claims are unsupported. [1] Many also claim to protect users from 5G radiation. These claims are likewise unsubstantiated. A market has developed for these products due to conspiracy theories about 5G. [2]

  6. Air purifier - Wikipedia

    en.wikipedia.org/wiki/Air_purifier

    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.

  7. Corona discharge - Wikipedia

    en.wikipedia.org/wiki/Corona_discharge

    In a negative corona, the ions are attracted inward and the electrons are repelled outwards. The glow of the corona is caused by electrons recombining with positive ions to form neutral atoms. When the electron falls back to its original energy level, it releases a photon of light.

  8. Electron ionization - Wikipedia

    en.wikipedia.org/wiki/Electron_ionization

    Electron ionization. Electron ionization (EI, formerly known as electron impact ionization[1] and electron bombardment ionization[2]) is an ionization method in which energetic electrons interact with solid or gas phase atoms or molecules to produce ions. [3] EI was one of the first ionization techniques developed for mass spectrometry. [4]

  9. Ion exchange - Wikipedia

    en.wikipedia.org/wiki/Ion_exchange

    Ion exchange. Ion exchange is a reversible interchange of one species of ion present in an insoluble solid with another of like charge present in a solution surrounding the solid. Ion exchange is used in softening or demineralizing of water, purification of chemicals, and separation of substances. Ion exchange usually describes a process of ...

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