26 posts tagged with uv.
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Less Teddy, Less Heady

Where do I shine my UV light to find interesting UV active art? [more inside]
posted by caphector on May 4, 2015 - 10 answers

Minimizing the negative effects of sun-derived UV radiation

How long do I have to be exposed to 'bad UV' to be at risk of negative effects? [more inside]
posted by paleyellowwithorange on Oct 3, 2014 - 6 answers

Goggle Sanitation on the Cheap

How do I build a UV sanitizing goggle cabinet? [more inside]
posted by Peregrin5 on Aug 26, 2012 - 10 answers

Kill them all! Or at least prevent their birth.

I need to keep scientific samples (chips) in solution for weeks at a time, and they're growing bacteria. I suspect biologists have a good way of dealing with this, since they tend to do more solution work than I do; are any of you out there able to point me in the right direction in terms of UV lamps or something similar? [more inside]
posted by you're a kitty! on Apr 5, 2012 - 14 answers

Artist needs help with finish(es)

What finish(es) should I use to finish my art (artist acrylic ink on cherry wood veneer)? [more inside]
posted by ogunther on Aug 5, 2011 - 18 answers

UV LED Blacklight flashlight recommendations?

What is the best handheld LED UV blacklight/flashlight/torch for pet stain detection? [more inside]
posted by SeƱor Pantalones on Jul 10, 2011 - 2 answers

I don't understand spectroscopy or spectrometry analysis.

I need help understanding analysis of mass spectrometry and UV, IR, NMR spectroscopy readouts. I'm looking up tutorials on websites and re-reading my textbook, and while I think I understand the theory behind each method I'm drawing a blank when it comes to actually interpreting results to complete problems. [more inside]
posted by schroedinger on May 2, 2011 - 8 answers

Circuit/Battery combos for driving a single 5mm LED

I'd like to use a single 5mm UV LED (3.4Vf, 20-25mA) to charge a daub of glow-in-the-dark paint. It only needs to be lit around 1 minute of every 10 (or 6 seconds of every 60), and only when the (room) lights are out. What battery/circuit would be most economical to operate, and require the least-frequent battery changes? [more inside]
posted by jjjjjjjijjjjjjj on Jan 18, 2011 - 6 answers

Why does red fade so easily outdoors?

On signs and other media shown outdoors, why does the color red seem to fade the fastest? [more inside]
posted by Hither on Nov 15, 2010 - 7 answers

Overthinking a plate of photons.

My son's costume (barrel of toxic waste) is covered with spray foam painted with glow-in-the-dark paint. What's the best way to charge it up ahead of time so it glows for a long time? [more inside]
posted by bondcliff on Oct 31, 2010 - 9 answers

How to test sunglasses' uv blocking levels using UV meter?

I have access to a UV meter. Using this tool how can I test the sunglasses I have actually filters out the light rays that are dangerous. I don't have any technical knowledge to interpret the numbers displayed by the tool. [more inside]
posted by neworder7 on Sep 10, 2010 - 7 answers

Plus-sized, work-appropriate, UV protective clothing?

Where can I find work-appropriate plus-sized UV protection (at least SPF 30) clothing? [more inside]
posted by eleanna on Sep 1, 2010 - 7 answers

Light bulb spectral analysis

How can I find out what spectrum of light (and what intensities of the various parts of the spectrum) are emitted by various types of light bulbs? [more inside]
posted by brenton on Jul 10, 2010 - 6 answers

The Rash, it actually doesn't burn!

Crohn's disease, rash. WTF is it? You are not my dermatologist [more inside]
posted by plinth on Jun 1, 2010 - 10 answers

How do I build a recycling shower?

Calling water purification gurus! Help me with an off-the-grid water recyclin' shower! [more inside]
posted by cr_joe on May 7, 2010 - 6 answers


What kinds of things have words written on them in ultraviolet ink? [more inside]
posted by amicamentis on Apr 22, 2010 - 10 answers

Does a UV sanitizer really work?

Are UV sanitizing wands for real? [more inside]
posted by k8t on Jan 1, 2010 - 15 answers

It's a Secret to Everybody.

I'd like a decent ultraviolet ink pen. [more inside]
posted by Eideteker on Dec 27, 2009 - 7 answers

Bugs in the system

Mass sterilisation of keyboards, what are my best options? [more inside]
posted by Iteki on Sep 1, 2009 - 24 answers

The answers always fade too soon.

Why does UV make things fade? [more inside]
posted by dmd on Jun 9, 2009 - 12 answers

How can i get rid of my white panda eyes after a skiing holiday?

How can i get rid of my white panda eyes after a skiing holiday? [more inside]
posted by freddymetz on Apr 9, 2009 - 9 answers

The windows, they do nothing?

How much UV damage am I getting sitting in a classroom for 5 hours with a big window. [more inside]
posted by andoatnp on Jun 26, 2008 - 5 answers

Fake Tan vs. Sun Tan

How does a real, UV created tan work when it is acquired after skin has been fake tanned with a cream/spray type product? [more inside]
posted by lukeo05 on Jun 23, 2008 - 3 answers

morning or afternoon swims?

When are the sun's UV rays weaker: from 10am to 11am, or from 5pm to 6pm? (East coast USA, this month.) Beach has strict swimming hours, 10am-6pm. I'm looking for which is the better hour to go swimming -- regularly over the course of June -- in a bathing suit, very-wide-brimmed solid straw hat, and sunglasses, but no sunscreen.
posted by sparrows on Jun 8, 2008 - 15 answers

Duh nuh nu nuh nu nu nuh nuh Oh Yeah!

Do cheap sunglasses protect you from the sun at all? [more inside]
posted by BruceL on Jul 14, 2006 - 16 answers

Photopolymerization of acrylamide

Attention molecular biology nerds: have you any experience with photoinitiation of acrylamide gel polymerization? [more inside]
posted by greatgefilte on Jul 7, 2005 - 2 answers

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