I think that the company that makes these lights just chose "Ozone Light" because it sounded cool to them. Has nothing to do with creation of O3.
Kirk, What do you mean by "opaque?" Do you mean that none or some of the UV goes through the glass? And quartz? wouldn't that manufacturing proscess be very expensive...resulting in really high retail prices? Kirk McLoren <[EMAIL PROTECTED]> wrote: Its the short uv that produces ozone 275nm? You need the mercury vapor lamps that are made of quartz. Glass is opaque to uv. Kirk Joe Street <[EMAIL PROTECTED]> wrote: Hi Luke; What is required to create ozone electrically is an arc open to air. The voltage required for this depends on the distance between electrodes or 'air gap' small gap requires lower voltage. Another way is to have a very high voltage which produces a corona. This is not quite like an arc but does cause local ionization of the air around the tip of the sharp electrode. Yes UV light can produce ozone (O3) I cannot remember which wavelength but a mercury arc lamp produces several spectral peaks and one of them causes ozone formation. Yes the high intensity UV light can cause burns to the skin and eyes. As well the ozone is toxic to breathe. On your last comment I am confused. You realize ozone and O3 are the same thing? If the lamp claims to produce ozone then it is producing O3. If it claims not to produce O3 then it cannot be called an ozone lamp! J Luke Hansen wrote: Excellent. I appreciate all of the input. In the past, I've used UV sterylizers in my marine aquaria, but never really had a need for indoor air purification. Now I do, so I'm examining my options. First a few points/questions... * very high voltages are required to create O3, correct? * UV light between certain nanometers creates O3? * This ozone light could also be harmful to people, as well as eliminating airborne pathogens? A side note, I think that the ozone light brags about its safety, and, in fact, states that it doesn't actually create O3. Thanks, Luke Joe Street <[EMAIL PROTECTED]> wrote: Yes ozone is a sterilizer and it is also unhealthy to breathe. High voltage arcs produce ozone and also produce nitrogen oxides which are not healthy. Mercury arc lamps produce enough UV to make ozone for sure. So does a laser printer. Usually arc lamps have an outer envelope to keep air away from the actual bulb. UV lamps bright enough to make O3 are dangerous to the eyes. What else about ozone....let's see, ozone disolved in hot deionized water is hell on wheels for anything organic. Works like gang busters as a cleaner for semiconductor wafers. Environmentally freindly! Liquid ozone is something like nitroglycerine, watch out for that one when using cryogenic pumps with oxygen plasmas. Warm them slowly with a nitrogen purge....don't let that ball of frozen ozone melt and drip or we'll see you in the next world. I suppose liquid ozone would beat liquid oxygen for starting a barbeque...lol Don't try this at home kids. Fun with ozone.... Joe Jeromie Reeves wrote: UV light (when powerful enough) can sterilize many things. There are a number of water plants that use UV for sterilizing. I dunno about the "Ozone Lights" doing much good on the O3 side (namely, is O3 a sterilizing agent?). I think there are better ways to make O3 such as direct electrical arc (jacobs ladder). Some ion machines also produce O3. Luke Hansen wrote: Hello all, I was just wondering if anyone has heard anything about the effects of these "Ozone Lights." I guess that they don't actually create O3, but they do kill airborne pathogens. Most of the online literature that I've found goes back to one study that showed this light effective in killing E. Coli bacteria in clinical trials. Anyone have experiences with this, or anything similiar? Thanks, Luke ____________________________________________________________________________________ Any questions? Get answers on any topic at www.Answers.yahoo.com. 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