Most US drivers licenses have "hidden" UV reactive graphics.

The photo was taken with BOTH long and short UV light from a 30W display lamp. It is a "stock" photo. I have most (maybe all) of them plus other UV reactive rocks/minerals, but have not lined them up like this. I also have a few different UV lights around here. 30W is also my brightest .

In my office/workshop, I am surrounded by UV reactive "targets" that I shine lights and lasers on regularly.

One of my coolest is quartz crystals with fluorapatite crystals that grew INSIDE them. The laser light penetrates enough to make the fluorapatite crystals glow bright orange inside the quartz crystals.

Peace,
dave

Passports, ID's & Credit Cards. They all have security features embedded within them. If you want to know where to look, tell me the type of passport / ID / CC. One of my job requirements is to check for bogus ID's and we use black lights to help as well as magnification loupes.

Teeth (glow green in UV)
Finger Nails (I think)
.. This ones a bit naughty.. but true... LSD
All the UV decor I have for the club nghts I put on..
which rolls nicely into the many different colours of UV Wool you can get!

erm do you seriously consume lsd?

LSD was not meant to be consumed "seriously."

Peace,
dave

Hehe ndeed!

and Hallucynogenyc.. the stash in my freezer says yes.. - but this is offtopc now.. so i wont thread hjack anymore.

Oh man, gotta test that out

My wooden floor!

I believe high-frequency light destroys LSD quite enthusiastically.

what the heck! you guys forgot vaseline glass! known as uranium glass too! like a damn chunk of kryptonite.. :-)

remember to use your uv-blocking yellow glasses when watching for fluorescence. not only to protect your eyes - its a whole different world. shining a blu-ray at green plant material, its boring. but with glasses, chlorophyll shines red, you can clearly see what parts have how much chlorophyll, its really fascinating (although its hard to describe).

manuel

just cut lawn grass
cannibas sativ-%$# nevermind

Just found the most UV bright material from my stock so far. It's Irwin strait-line orange chalk powder. It is like an orange arc-weld from ~30 feet with my 200mw GGW.

any idea where to get the uv-agent from laundry detergent and paper in pure? it must be great! invisible in daylight, but really bright under uv.. :-)

manuel

Don't know about laundry agent for sure, but about paper, it's fluorescent part for the natural fibers (like cotton fabric), and part for the "whitening" used in the making process ..... sorry, i don't think that bright white things are "invisible" in daylight, anyway :d

well, (some sort of) tissuepaper dont fluorescene, recycled paper neither, and envelope-paper neither.. sure, most of that stuff is brown/grey, but if it was the natural fiber, it should fluorescene at least a bit..

oh, another good one: chestnut-tree! you put a small branch (branch? a small one, a centimeter diameter is plenty!) into a glass of water, shine 405nm at it, and see a bright white-blue fluorescening liquid coming out of it and mixing with the water! its invisible in daylight, and shines impressively strong!

manuel

Even better Manuel. Praesodymium doped Phosphate.....

http://www.kigre.com/files/nd33.pdf

interesting stuff.. +50% output! :-)

hmm, praesodynium, huh? where to get? the europium peaks look promising too!
(which is well known for its high gidt activity)

manuel

White Phosphor ? .....

Ah, no, wait, it just self-ignite in contact with air ..... nevermind

heh! "funny" thing, at the german east-sea coast, amber can be found. unfortunately, wwII ammunition was dumped after the war, which in the decades decomposed. so there are now places where a white phosphor mixture from self-igniting ammunition is washed at the coast. and, hooray, you cant easily distinguish it from amber! (almost) same density, same look, same hardness. the only difference is that it will ignite after a few minutes in your pocket. forming high-temperature, sticky burning goo, which sticks to your hand and everything. cant be turned off easily. when you jump into the water its off, go out again (with nasty burns), it will ignite again. really horrible stuff!
why i tell this totally off-topic scary shit? because amber happens to brightly fluorescence! ;-)
i tried to find amber at night with a blu-ray laser (defocused) and blu-blocking glasses, but nada. sure, it was summer (water too warm and not dense enough), it was the northern sea, and there are tourists everywhere..
will try again in winter! :-)
i just love that idea! combining lasers with "searching treasures" and minerals! *happy*

manuel

^ but if you don't want to risk your laser (salty water and all the rest), you can also use one of those pocket-size UV tubes, battery operated, like as example these ones, or similars.

it's not funny at the same as with a laser, but it works

are you kiddin? no laser, but a stinky uv tube? :-P
seriously, its not really stormy at the moment, in summer. besides, my laser has a window in front of the lens. its not waterproof, but surely weatherproof.. will post some pictures when i'm home again!

manuel

When I mentioned Fabreeze I was talking about shooting the laser into the spray bottle. The fluid lights up although it could jsut be refraction or something.

Heres mine- All scorpions glow- the biggest -the Emperor shines a beautiful torquiose- scorpion hunters use a small handheld blacklight. Antifreeze too- and styrofoam-other 'bodily' fluids(uck)-luminoil of course-plus a no longer sold brand of eyedrops- Murine AC IIRC- found this out by accident when using the drops(now why would I be using them??) at an after-hours club that had a ton of blklights. NOBODY wanted to look me in the eyes. lol=<(*u*)> hak edit:I guess luminoil(luminol not sure of the spelling)only reacts after mixing with certain fluids.-I stand corrected

Yes, luminol reacts as fluorescent after mixing with blood, also very light quantities.

lipton ice tea is a fluorescent material to