EPROM Erasers?

Maybe, but it seems dubious to me. Perhaps it depends on how much power is being run through the arc. But I know it is *not* safe to look at an arc-welding arc without UV protection; my father told of a time when, in a pinch, he arc-welded using many sunglasses to cut the light down - but they didn't cut the UV down enough, and he sunburned his eyes rather badly. He compared it to living with a handful of sand in each eye. For a week. (Since then when he's had to weld without a proper welding filter, he's lined it up and then just kept his eyes closed while the arc is live, trusting to his manual dexterity and experience to keep the weld where it belongs.) After hearing that, I've been rather timid around electrical arcs more vigorous than what you get out of a car spark coil. I'll even look away when I see welding across the street on a construction site, even though I know perfectly well inverse square drops it to something safe. Plasma is plasma, and the light is going to have a corresponding spectrum. But there's only as much power coming out as goes in. Without a real measurement, though, I'd be inclined to err on the side of caution. Perhaps that's just because I value my sight so much. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B