alpg88
Flashlight Enthusiast
- Joined
- Apr 19, 2005
- Messages
- 5,396
Fungus and bacterial infections glow, uv is often used to diagnose it, shine uv on your feet, you'll see if you have fungus toenails. vets use it to see for skin infections too,
Wow. I had no idea this was possible. This raises so many questions in my mind....She has two different blood types circulating thanks to the different bone marrow DNA in her left side bones. The immune systems of the different parts of her body tend to fight...
I've been wanting to find a petty thief at work for a long time, so this paste could help, I didn't even know about its existenceUV tracer paste and UV ink for identifying a nearby thief or mischief maker. They used to coat the handles of public fire alarm pull boxes with UV tracer paste. If a false alarm was pulled, the firemen would check the hands of nearby kids for glowing fingers.
It comes in paste and powder form. The professional version of the paste contains an agent that binds to the skin and is very hard to wash off, even though it's undetectable to the subject. This is the stuff you want.I've been wanting to find a petty thief at work for a long time, so this paste could help, I didn't even know about its existence
Not entirely, as the subject is likely to transfer some of the paste to their clothes, desk, etc. Also the subject needs to suspect that this is being used in the first place. And even a tiny bit of the paste will stand out like a sore thumb under UV.I'm guessing a pair of gloves would defeat the paste.
In a pinch, you can use blue-blocking computer glasses. These will block all wavelengths shorter than around 450nm including UVA thru UVC.Any polycarbonate blocks uv, acrylic, pmma will not, few of my reading glasses are made of PC, i can see things glow, but when i look directly into uv light with black glass, i see nothing, but without glasses i can see leds die. if you have no black glass, even with PC glasses you will still see visible spectrum that uv led emmitts.
Interesting. Now I'm wondering if the non-toxic UV tracer dyes are made with Riboflavin.Here's my UV lights in action:
US Passport with Visible light:
View attachment 57594
With UV:
View attachment 57595
Leak under the house after adding Riboflavin to the water:
View attachment 57596
Rock found in California - mostly Mica & Quartz:
View attachment 57597
But definitely has some mineral in it:
View attachment 57598
Possibly.... based on what I know now, I only need about a milligram per gallon for a decent reaction... for two 80 gallon storage tanks I put 1/2 cup. Took about 1 month for the yellow tint (under normal light) to go away, and about 3 months to stop getting a UV reaction.Interesting. Now I'm wondering if the non-toxic UV tracer dyes are made with Riboflavin.
Interesting. I didn't know of this use for UV. Is this UVA/UVB metal halide?I build portable & AC powered UV lights to remove stains from hand-woven rugs.