Friday, 1 May 2009



  1. Dear Sir/Madam,

    I am Sammy Poon, a reporter of Next Magazine in Hong Kong. I have read the article on the website, and really interested in AquaIris. I would like to report this to Hong Kong reader. Would you mind sending me some high resolution photos, maybe 5-6 photos, to publish in the magazine?

    Thank you for you kindly attention!

    Sammy Poon
    Reporter, Features and Technology, Next Magazine
    Address: 4/F, 8, Chun Ying Street, TKO Industrial Est W, Tseung Kwan O, NT, Hong Kong
    Tel: 92566642 / 29907510
    Fax: 26239554

  2. Talia,

    Your design is beautiful, but it won’t work. Unless you actually know of “converter crystals” or invented them yourself, this is a design based on science fiction.

    Sorry to break it to you, but the “converter crystals” won’t work because of physical laws. UV-C has a shorter wave-length than UV-B, and therefore has a higher energy content per photon. (That’s why it damages DNA.) Minerals that convert light from one frequency to another only convert-down, never up. For example, phosphors in a fluorescent lamp absorb UV light, which has a high frequency/short wave-length and lots of energy per photo, and emit visible light, which has a much lower frequency/longer wave-length and much less energy per photon.

    If the sunlight had enough UV-B to convert to UV-C enough to sterilize water flowing through such a grid for such a short period of time, we’d all be in trouble. The girl holding that demo unit would have skin damage.

    Please do some book research on how much time exposure to UVC water needs in order to be sterilized.

  3. Talia, pardon my extended critique, but here's another problem:

    "It then travels under a layer of converter crystals where germicidal UVC rays directly hit every water molecule passing by."

    There is no need to hit the water molecules with UVC; the germs are larger than water molecules, and water has no benefit from being exposed to UVC. The microbes live *in* water, not *on* the water molecules themselves. The whole point of using UVC is to kill any present microbes.

    Also, what can you make the object out of? Glass blocks 90% of the UVB and UVC light going through it other than UVA, UVA can't be up-converted to UVC, and plastics get damaged by UV light and absorb much of it in the process. And presuming the thing works, if the UV index for the day is lower than necessary to be effective, then the user gets a false sense of confidence in the safety of the water he or she runs through the AquaIris. The only way the item could be safe to use is with some sort of indicator of UV intensity, or if the user has a local UV-index forecast for the day handy.

  4. Talia
    I'd like to invite you to exhibit the AquaIris at the largest green building conference in California, called West Coast Green. Email me at for more details. Even if you can't come to the states fo rthe conference Oct 1-3, maybe we could still have your AquaIris on display. Thanks.

  5. Very nice design but UV-C only at stratosphere... Try reading Environmental Chemistry of Colin Baird. It´s easy to see it.