which goes thru the glass
about what? Rod made the claim that UV does not pass thru glass. pick on him- or is he too much for you to handle?
which goes thru the glass
about what? Rod made the claim that UV does not pass thru glass. pick on him- or is he too much for you to handle?
"felix_unger"
FFS - "glass " is a whole class of materials - not ONE material.
Ordinary "soda glass" heavily attenuates UV radiation.
But the tubes used in fluoro and CFL tubes are egg shell thin - so it is not
100%.The tubes used in "bug zappers" use quartz glass to eliminate this attenuation.
In any case, bright SUN on generates about 100 to 1000 times more UV that any fluoro tube.
... Phil
and window glass passes UV which is why curtains and carpets fade
so?
-- rgds, Pete
Whether the majority of cfls emit harmful amount of UVs to us, is something I'm not sure yet. That need some reading of research papers.
Come on man. You should know that's incorrect. I know you are no big in physics, but you still suppose to have chemistry experties, which should give you enough background knowledge on that. We have sunglasses(not just glasses) for a very good reason.
Yes, but most of you 'black' guys can handle it. ;-) It's mostly in Australia we should be worried about this UV sun thing. I believe most of the habitable other areas of the world is ok. I believe the darker your skin, the better protection you might have against UV in under Australian sun. I rarely hear aborigenes getting skin cancer, by that I meant the real Aborigenes. Not the 5% Aborigenes.
Trevor is scared of Rod. ;-)) BTW, Rod is dead wrong, even in generic sense of 'glass'. But, you won't get him to admit that. He would rather die. :-))
>"felix_unger"
** Wrong.The sun is relentless and has massive UV output.
** UV harm done to humans is from the sun, rather than fluoros - f*****ad.Wot a dumb cretin.
... Phil
yes I know, and it passes thru window glass and fades carpet and drapes, as I said. what is your problem?
I know - f*****ad
yes you are
nothing is more sure than that, lol!
-- rgds, Pete
The UV exposure index in Australia is no different to other parts of the world with the same conditions (latitude, altitude, clouds etc.)
That is true for any where in the world, not just Australia. All fair skinned people are at increased risk if they move closer to the equator, as happened when the Poms moved here.
The skin cancer mortality rate for aborigines is about a quarter of the non- aborigines. But aborigines die much younger anyway.
On another topic, has anyone used BUNGARD photo-resist pcbs and what is a cheap UV source to expose with? (Other than the Sun.) Aldi had a cheap UV steriliser a few years ago which worked with UV EPROMs, but it's too small for PCBs Anyone tried cold cathode UV tubes?
I have couple of incandescents in the house installed by(not me), in areas where I rarely switch them on. I haven't had the bulb police showing up and kicking my arse over it yet. And the local Chinese shops and major warehouses still have them.
Are they free in Antarctica??!!
Are they free in Antarctica??!!
Wrong as always. average glass blocks UVB. But, cfl's emit both UVA & UVB.
Wrong as always. average glass blocks UVB. But, cfl's emit both UVA & UVB.
I still have a box full :)
now that you've outed yourself on usenet expect a SWAT team anytime soon..
eBay too
-- rgds, Pete
Crap! Why don't I think before I talk?!! ;-)
Shouldn't it be illegal to sell them, like tobacco and alcohol?! :-) BTW, Rod is a home brewer. I would dob in the bastard, if I know where he live. :-))
Try the Weed Capital of NSW
I think it is. but ppl who sell on ebay don't care. if there's any hassle they just close their account and start a new one.
is laying low until we stop talking about this.. :)
I think it's 260 miles past the black stump, then turn right.. :)
-- rgds, Pete
They don?t do the UV thru glass, f****it.
so what are those fluro tubes made of then? stone? (f****it)
-- rgds, Pete
"felix_unger"
** I figured some people would get their GLS lamps on Ebay.Technically that makes YOU the importer and so breaking the law in each Australian state.
.... Phil
"Damian"
** Tobacco and alcohol are on restricted sale - but GLS ( non halogen) bulbs are banned outright..... Phil
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.