But the dye in the glass lets a little violet visible light through as well as passing lots of invisible UV.Ĭheck out this cut and paste, some good info here. If a perfect dye were available, black light tubes would not glow purple when turned on, they would look totally black, even when turned on. Because of this, black lights are made with dyed glass which blocks most of the visible light but passes the UV light. If your black light tube was made from clear glass, the bright blue/green glow would light up the room. Mercury gas gives off green, blue, and UV light. The gas gives off various frequencies of light, and humans usually see these as colors. When high voltage is applied across the ends of the tube, a big, silent, fuzzy spark jumps through the low pressure gas inside, and this makes the gas glow. If you could find a flourescent tube made from clear glass with no white coating, you'd be able to see some tiny droplets of mercury rolling around inside. The difference is that "UV" lights lack the white phosphor coating, and they are made with dark blue glass.įlourescent tubes contain a near vacuum with a little mercury vapor. mine are fast and reliable even in cold weather, as long as you have a good power source.Ī "black light" or Ultraviolet lamp is almost the same as the flourescent lights used in most classrooms. so you can hit it with a mini torch again, it only takes two seconds to re-warm it.īut I don't need to worry about cure lamps anymore. You can also keep some things stuffed inside your INSIDE coat pockets too, but that has it's limits, and you have to keep opening you coat.Īlso, if you live where it gets really cold, the WARM light will be cold in a couple minutes. The only way to keep everything warm is to have work vehicle right there, or get all the cars started and warmed up as you go, and stick you stuff inside them. and hopefully there are several more cars to go. After the first car is done, your stuff will be getting pretty cold. A good day for me means being out in the cold for hours, often on a lot where I can't take my van. and keeping everything warm is an uphill battle in the winter. When possible, I try to keep everything warm in my van. Keeping the light in your warm car would be good. if you do retail jobs, one repair at a time, then you can do things a bit different. I guess we all have different circumstances. something to make the bulb nice and warm. Here's a tip if you use these in cold weather. I actually have several now, for me and my partner. It was a big leap for me to pay $100 for a cure lamp, but once I tried one, I was hooked. I used these for several years before I found the 9 watt 12V ones. 5-10 bucks, already with the uv bulb, instead of $30-40 from WSR suppliers.I have some with with bulbs and some with purple bulbs, and I think they work the same. The 4watt "AA" battery lights that WSR suppliers sell work too, but they need much longer for a good cure and are not good in cold temps. Delta has them as well as several other suppliers. Just thought I would mention that I agree with sydfloyd about the 9watt dual tube style lights.
0 Comments
Leave a Reply. |