• Question: What are you zapping water with?

    Asked by Maximus Decimus Meridius Commander of ..... to Richard on 10 Mar 2015.
    • Photo: Richard Simons

      Richard Simons answered on 10 Mar 2015:

      We’re using ultraviolet (UV) light from LEDs. UV light is invisible to humans, but is just a higher energy version of visible light. UV light causes DNA damage in the bacteria (and your skin if you don’t wear suncream!), making it unable to replicate itself. If a bacteria cannot replicate, it cannot infect.
      UV LEDs are an emerging technology which allow us to generate UV light from a very small and low power source.
      We’re looking to make the most out of these tiny UV sources in order to make the cheapest possible device for water treatment

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