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There are medical devices that use UV light to "kill" viruses. I have two novelty 75 watt Blacklight incandescent bulbs of the type that are sold in Halloween superstores. I was thinking of rigging up a lightbox lined with aluminum foil and putting things like car keys, credit cards, work gloves, facemasks and the like into it. I would ventilate the box because these bulbs run hot. My son who is a geek says these bulbs emit UVA and what I need is UVC LEDs. He seems to be saying politely that this project is a waste of time, and I concede that he is probably right. Can I get a second opinion? At least I can make Velvet Elvis paintings glow. Cullen328 Let's discuss it
Just to expand on "Novelty blacklights usually are coated with phosphor to produce a purple light while also allowing some UV to escape. Fluorescent lamps used for sterilization have a clear tube with no phosphor, to allow UV to escape unimpeded.". the phosphor actually puts out quite a bit of blue along with UVA and looks bluish white. These bulbs are often used in bug zappers. The ones used to make your dogs playing poker velvet painting fluoresce also have colored glass that mostly filters out everything except UVA and a bit of deep violet. The UVC tubes are made of quartz, because glass blocks most UVC.
At a trendy hip-hop fashion event in Hong Kong, attendees experienced sunburn and eye problems after the lighting contractor used UVC bulbs instead of UVA. [3] [4] -- Guy Macon ( talk) 04:26, 30 March 2020 (UTC)
Whether you use leds or fluorescent tubes be very careful about eye exposure and somewhat careful of skin exposure. 2601:648:8202:96B0:E0CB:579B:1F5:84ED ( talk) 08:23, 30 March 2020 (UTC)
I've told two different opinions about vitamins: one opinion (biological science student) says that there are vitamins made of proteins. Second opinion (a PhD from Bristol university) says it can't be because if they were they’d be broken down into amino-acid units during digestion by proteases rather than absorbed. Now, according to the article here ( vitamin) there is one vitamin (U) which is protein metabolize. So as far as I understand the student is wrong. Am I correct? 93.126.116.89 ( talk) 20:07, 29 March 2020 (UTC)
Science desk | ||
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< March 28 | << Feb | March | Apr >> | March 30 > |
Welcome to the Wikipedia Science Reference Desk Archives |
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The page you are currently viewing is a transcluded archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
There are medical devices that use UV light to "kill" viruses. I have two novelty 75 watt Blacklight incandescent bulbs of the type that are sold in Halloween superstores. I was thinking of rigging up a lightbox lined with aluminum foil and putting things like car keys, credit cards, work gloves, facemasks and the like into it. I would ventilate the box because these bulbs run hot. My son who is a geek says these bulbs emit UVA and what I need is UVC LEDs. He seems to be saying politely that this project is a waste of time, and I concede that he is probably right. Can I get a second opinion? At least I can make Velvet Elvis paintings glow. Cullen328 Let's discuss it
Just to expand on "Novelty blacklights usually are coated with phosphor to produce a purple light while also allowing some UV to escape. Fluorescent lamps used for sterilization have a clear tube with no phosphor, to allow UV to escape unimpeded.". the phosphor actually puts out quite a bit of blue along with UVA and looks bluish white. These bulbs are often used in bug zappers. The ones used to make your dogs playing poker velvet painting fluoresce also have colored glass that mostly filters out everything except UVA and a bit of deep violet. The UVC tubes are made of quartz, because glass blocks most UVC.
At a trendy hip-hop fashion event in Hong Kong, attendees experienced sunburn and eye problems after the lighting contractor used UVC bulbs instead of UVA. [3] [4] -- Guy Macon ( talk) 04:26, 30 March 2020 (UTC)
Whether you use leds or fluorescent tubes be very careful about eye exposure and somewhat careful of skin exposure. 2601:648:8202:96B0:E0CB:579B:1F5:84ED ( talk) 08:23, 30 March 2020 (UTC)
I've told two different opinions about vitamins: one opinion (biological science student) says that there are vitamins made of proteins. Second opinion (a PhD from Bristol university) says it can't be because if they were they’d be broken down into amino-acid units during digestion by proteases rather than absorbed. Now, according to the article here ( vitamin) there is one vitamin (U) which is protein metabolize. So as far as I understand the student is wrong. Am I correct? 93.126.116.89 ( talk) 20:07, 29 March 2020 (UTC)