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  2. Negative air ionization therapy - Wikipedia

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

    For Seasonal Affective Disorder (SAD), a randomized controlled trial (RCT) comparing high (4.5x10 14 ions/second) and low (1.7x10 11 ions/second) flow rate negative air ionization with bright light therapy found that the post-treatment improvement percentage was 57.1% for bright light, 47.9% for high-density ions and 22.7% for low-density ions. [8]

  3. Negative air ions - Wikipedia

    en.wikipedia.org/wiki/Negative_air_ions

    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.

  4. 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.

  5. Corona discharge - Wikipedia

    en.wikipedia.org/wiki/Corona_discharge

    In a positive corona, all the electrons are attracted inward toward the nearby positive electrode and the ions are repelled outwards. 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.

  6. 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]

  7. Ionized jewelry - Wikipedia

    en.wikipedia.org/wiki/Ionized_jewelry

    A number of wearable products marketed as "negative ion generators" have actually been found to contain radioactive thorium or uranium, apparently to generate negative ions as a result of radioactive decay. [9] [10] While the activity is typically low, adverse effects from cumulative exposure to the radioactivity in these products cannot be ...

  8. Hydrogen ion - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_ion

    The concentration of hydrogen ions and pH are inversely proportional; in an aqueous solution, an increased concentration of hydrogen ions yields a low pH, and subsequently, an acidic product. By definition, an acid is an ion or molecule that can donate a proton, and when introduced to a solution it will react with water molecules (H 2 O) to ...

  9. Ionization - Wikipedia

    en.wikipedia.org/wiki/Ionization

    Ionization (or ionisation specifically in Britain, Ireland, Australia and New Zealand) is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes. The resulting electrically charged atom or molecule is called an ion.