Research shows that waterfalls and apparently showers produce negative ions, is there a certain height or velocity for water to fall to produce negative ions?

  • $\begingroup$ This is the first I've heard of it but I have a feeling it is statistical since obviously not all the water that hits splits into into negative ions so asking for a height beyond which it happens might be an inapplicable question. $\endgroup$
    – DKNguyen
    Oct 2, 2020 at 20:00
  • 1
    $\begingroup$ I don't know if it answers the question, but it might be worth checking: "Characterization of ions at Alpine waterfalls," Atmos. Chem. Phys., 12, 3687–3697, 2012 (atmos-chem-phys.net/12/3687/2012/acp-12-3687-2012.pdf) $\endgroup$ Oct 2, 2020 at 20:45
  • $\begingroup$ Where does the research say the negative ions are produced? Are they possibly referring to a triboelectric effect between the water and air? $\endgroup$
    – Bob D
    Oct 2, 2020 at 21:12


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