>If I'm not mistaken, then UV (with high enough frequency) causes the >formation of ozone. That is probably what causes the 'fresh smell'. >Now, before we all switch on our UV erasers in an effort to save the >ozone layer, I've also heard that ozone is poisonous. I'm not sure >about that though, but in the least, it irritates your airways. I once >forgot my homebrew UV eraser on overnight and felt really bad the next >day. Since then I have constructed a small timer (with a PIC of course!) >to prevent such incidents in the future. > >I am impressed by the speed with which your lamp erases EPROM's. Where >can I get such a lamp? Ozone is not a good thing at ground level, it is one of the sources of smog. In the upper atmosphere it is a good thing. TTYL