speaking of germicidal MV lamps, I have a question.....

he uses a lightbulb as ballast to limit current. No cap that I saw.

NT

So the little blue round object at the bottom left of screen is not a capacitor? Sure looks like it with the two posts sticking up from it, but maybe not.

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Never mind, I guess that's the plug for the incandescent bulb. It seems

like that's all he has in series with the MV lamp then, an incandescent bulb to act as ballast. Any more details on this would be appreciated.

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the only other detail one could add is that the discharge is snaking. IIRC, and can't be sure, that comes from underrunning the discharge, which often affects lamp life.

He makes the mistake of opening the window: let the ozone do its job.

NT

Sufficient atmospheric ozone to kill bacteria by exposure will pretty much destroy any rubber materials, attack many plastics, harm many plants and much worse.

Further to this, so-called "air cleaners" based on ozone are very similar to bug-zappers. They do not work, they can (and often do) cause harm and are generally worthless.

Peter Wieck Melrose Park, PA

I have seen long term damage, an example, ozone fish tank bubbler. Damaged varnish off back wood wall. Short tern cleansing I have not seen any signs. I have two ozoners, not the air fresheners. After 1 hour turned off, a room will have a cleansed smell, no odors. Odors can reseep out of wood etc. and may have to do again later. Sunlight creates ozone cleaning, and my mothers clothes dryer ozone bulb turned the wash into smells like on clothesline smell.

Greg

The 'how is ozone harmful' section is pretty iffy. I've not read furtheer.

NT

Maybe if you had read past the title.

The 'how is ozone harmful' section is a fair way past the title

When inhaled, ozone can damage the lungs. Relatively low amounts can cause chest pain, coughing, shortness of breath and throat irritation. Ozone may also worsen chronic respiratory diseases such as asthma and compromise the ability of the body to fight respiratory infections. People vary widely in their susceptibility to ozone. Healthy people, as well as those with respir atory difficulty, can experience breathing problems when exposed to ozone. Exercise during exposure to ozone causes a greater amount of ozone to be in haled, and increases the risk of harmful respiratory effects.

Ozone is a toxic gas with vastly different chemical and toxicological prope rties from oxygen. Several federal agencies have established health standar ds or recommendations to limit human exposure to ozone. These exposure limi ts are summarized in Table 1.

That is "iffy"? You are, truly, a 'piece of work'.

Peter Wieck Melrose Park, PA

The capacitor is here to correct the power factor of the ballast. For a test it is not necessary.

I used one of those lamps for lighting in the early ages of amateur video. It took several minutes to reach normal brightness. Today with LED they are useless. Even with their envelope intact those lamps are not designed to be looked at at close range . Use of sun glasses is a good idea.

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e chest pain, coughing, shortness of breath and throat irritation. Ozone ma y also worsen chronic respiratory diseases such as asthma and compromise th e ability of the body to fight respiratory infections. People vary widely i n their susceptibility to ozone. Healthy people, as well as those with resp iratory difficulty, can experience breathing problems when exposed to ozone . Exercise during exposure to ozone causes a greater amount of ozone to be inhaled, and increases the risk of harmful respiratory effects.

perties from oxygen. Several federal agencies have established health stand ards or recommendations to limit human exposure to ozone. These exposure li mits are summarized in Table 1.

It reminds me of the dihydrogen monoxide gag, where a useful substance (wat er) is described as if it were a terrible killer that should be eradicated. It's like saying floods kill people in India every decade so we should not have tap water. It relies on the reader's lack of knowledge of the subject .

I think that says more about you than me.

NT

But we're not talking about dihydrogen monoxide. We're talking about ozone which does indeed have serious health effects. When I was a kid growing up in Los Angeles in the late '50s and early '60s, we'd have "ozone days". School was canceled. It hurt to take deep breath.

Peter is right, you are piece of work. You consistently ignore facts and continue to argue.

Jeff:

I have come to the conclusion that no reasonable person should stand in the way of any individual whose heart is set on earning a Darwin Award.

Peter Wieck Melrose Park, PA

At the risk of stating the obvious, everything is toxic in excess.

on the contrary, until facts are established I'm likely to have more knowledge re ozone than you. Too many folk are naive about medical info.

NT

I remember first time I drove down into LA basin from High Desert. Ozone smell very strong.

Greg