[HN Gopher] Europium UltraGlow Powder - Green
___________________________________________________________________
Europium UltraGlow Powder - Green
Author : graderjs
Score : 141 points
Date : 2023-02-06 16:42 UTC (6 hours ago)
(HTM) web link (unitednuclear.com)
(TXT) w3m dump (unitednuclear.com)
| Majestic121 wrote:
| Are there specific restrictions on this ? I get
|
| ``` Access denied Error code 1020 You do not have access to
| unitednuclear.com.
|
| The site owner may have set restrictions that prevent you from
| accessing the site. ```
|
| Connecting from work and mobile
| realYitzi wrote:
| Use a VPN
| HansHamster wrote:
| http://web.archive.org/web/20230206165943/https://unitednucl...
| throwaway743 wrote:
| Isn't this Bob Lazar's company?
| abotsis wrote:
| Wait, what:
|
| 8 ounces ( $70.00 ) (1lbs) 16 ounce ( $130.00 ) (1.5lbs)
| riknos314 wrote:
| Likely contents weight vs (shipping weight).
| Rebelgecko wrote:
| Maybe weight of the contents of the containers vs overall
| weight?
| pxeger1 wrote:
| 0.5lbs is a lot of packaging
| NotYourLawyer wrote:
| This is pretty interesting. I did not realize ZnS was no longer
| state of the art (although I probably should have).
| dekhn wrote:
| I've used similar stuff based on aluminum strontiate. It's
| absurdly powerful. I blend it into epoxy and then pour that into
| things.
| noman-land wrote:
| What kinds of things?
| dekhn wrote:
| My best is a glow-in-the dark Pacman and ghosts. it's a big
| black plastic board with shapes cut into it with my CNC. Then
| I backfilled the shapes with the appropriately tinted epoxy
| which dried in place. Then I have a UV light pointed at the
| board. At night, you don't see the board, just some glowing
| figures suspended. Yellow and green work great,
| blue/red/purple not so much.
|
| I also embed LEDs into epoxy resin that's tinted, which makes
| the whole thing glow amazingly for very long periods of time.
|
| Just random stuff, really anything that comes into mind.
| pprotas wrote:
| I want to eat it
| tmikaeld wrote:
| Too bad this can't be bought in Europe, the self-glowing stuff
| I've tried here (including tape) last only about a year, then
| it's useless.
| heeen2 wrote:
| https://www.amazon.de/gp/product/B0114G2SZ8/ref=ask_ql_qh_dp...
| comments by the seller indicate that it is europium doted
| strontium aluminate - maybe some chemist can comment if this is
| the same stuff.
| tmikaeld wrote:
| Thanks, I'll try it!
| kortex wrote:
| It's most likely the same chemical formula (so yes, "same
| stuff"), but phosphors vary quite a bit in their quality
| based on the synthesis conditions (maybe the "same stuff", or
| may be better/worse quality than UN's batch).
| bjornsing wrote:
| "UltraGlow(r) powders are a new generation phosphorescent
| material with an astonishing glow time as long as 30 hours!"
| genewitch wrote:
| and the "glow time" is only to a value of .32mCd, which is,
| per their copy, "100x more luminescent than necessary to see
| with the naked eye"
|
| so more than 30 hours after being charge for 5 minutes in the
| sun.
| CodeMage wrote:
| It "recharges" when exposed to light.
| kyleblarson wrote:
| What do you use it for?
| notacoward wrote:
| Strontium aluminate doped with europium has been the standard in
| persistent phosphorescence for a while. A large part of the
| reason I got into epoxy resin craft was to incorporate it in
| glowing elements, so I have a _lot_ of such items. Some last all
| night. Some - especially reds and purples - are faint and barely
| last an hour. More recently, I 've noticed dysprosium being added
| to the mix as well, though TBH I've never noticed any difference
| in brightness or duration compared to stuff I could get ten years
| ago.
|
| The one thing I'd highlight (heh) for anyone trying to use this
| stuff themselves is: be aware of its density. I have yet to find
| a version that disperses evenly in resin; it tends to sink
| instead. Might disperse better in glass, but I know little about
| that craft so maybe it would be unusable for other (thermal?)
| reasons. If it tends to sink _or_ float in any medium, such as
| paint, color /glow will be uneven. There are ways to deal with
| this issue, but they tend to involve extra steps. For example,
| with resin you can pour many thin layers, but if you want to
| avoid visible strata you have to go even further with non-planar
| surfaces and thickeners and such. It's ton of fun, but also a bit
| of work sometimes.
| beambot wrote:
| Care to share pictures of some of your creations...?
| ridgeguy wrote:
| Might it suspend better/longer if the particle size were
| smaller?
|
| I've ordered some, will try a little comminution to get fine
| dust. At some point, viscosity should predominate over
| settling.
| notacoward wrote:
| In my direct experience, grain size hasn't made much
| difference. Also, I use several kinds of very fine
| dusts/powders in my resin work and I've come to loathe the
| whole category. They go everywhere at the _slightest_ puff of
| air, stick to equipment and tools, etc. I already wear a
| mask, but with chemical (NIOSH magenta or olive) rather than
| particulate cartridges, so there 's that too. Of course YMMV.
| Perhaps also relevant is that I tend to work mostly with low-
| viscosity resins because it's easier wrt bubbles and edge
| creep, but I've had the settling problem even with higher-
| viscosity formulations. Maybe some day I'll hit on a
| combination of materials and techniques that solves the
| problem. Just hasn't happened yet. Good luck!
| dandelany wrote:
| per the docs at https://www.unitednuclear.com/glowdata.htm :
|
| "Do no not grind the glow powder or try and dissolve it. On a
| microscopic level, the glow powder works by an energy
| exchange in its crystalline structure. These crystals are
| very small and just appear like a fine powder. When they are
| mixed with a clear medium as we do with our glow paint, the
| glow powder does not dissolve, it is just suspended in the
| medium. If you mix the powder with a medium that causes it to
| break down and dissolve (like water), the glow will be
| ruined. The same thing will happen if you grind the glow
| powder. You crush and destroy the crystal matrix and the
| energy will not be able to transfer between the glow material
| molecules causing a dramatic drop in glow brightness."
| [deleted]
| jakedata wrote:
| I wonder if the radium dial paint in my Baby Ben clock would emit
| enough energy to activate the Europium? The original phosphor has
| degraded to the point where it doesn't glow but it certainly sets
| off my Geiger counter.
| swayvil wrote:
| I've used Strontium Aluminate glow powder (mixed with watergel,
| resin). It's potent stuff. I think this europium stuff is that.
| braingenious wrote:
| I _LOVE_ United Nuclear. They have made many chemistry and
| physics classes so much fun.
|
| Here's a bit of free advice though: Do not tell a police officer
| that you have thermite on you. Furthermore, do not explain what
| thermite is if they don't know what it is. It is a recipe for a
| really long day.
| noman-land wrote:
| Never heard of this site before but it has a pretty fun
| catalog. Caffeine Soap!
|
| https://unitednuclear.com/index.php?main_page=product_info&c...
| layer8 wrote:
| Not very convenient though:
|
| > leave on for at least 1 minute before rinsing.
| culi wrote:
| Why's that not convenient. I usually turn the water off
| while I apply soap and then turn it back on when I've
| finished to conserve water. That wait time is around a
| minute anyways. From talking to international friends this
| seems to be the norm around the world though I wouldn't be
| surprised if the average American doesn't practice this.
| bradknowles wrote:
| Not me. Water is on the whole time. I will move the body
| part I'm washing out if the stream long enough to apply
| lather, then immediately rinse it and then repeat. I
| would be surprised if there aren't at least a large
| minority that are at the two extremes here.
|
| And caffeinated soap has been around a while, and I've
| been using it off and on. Some are good, some are not.
| layer8 wrote:
| You'd have to wait at least a minute _after_ applying the
| soap.
| ortusdux wrote:
| Heatgen is a new company that is selling self-heating aluminum
| cans. As I understand it, it uses a thermite reaction as its
| heat source. So who knows, maybe having a thermite charge in
| your pocket might become more common!
|
| https://www.youtube.com/watch?v=zSpuTwEOpOg
|
| https://www.poweredbyheatgen.com/
|
| https://www.highbrewcoffee.com/products/self-heating
| braingenious wrote:
| Oh dear LORD NO
| vlachen wrote:
| I've designed a lot of dumb things in my life, but that
| beats me, hands freaking down. Can you imagine the complete
| clusterfuck a crashed semi trailer full of these things
| would cause?
| uoaei wrote:
| That is an objectively terrible design. The video through the
| first link demonstrates that, if you remove the liquid before
| activating the charge, it gets so hot it _melts the aluminum
| jacket for the charge_. Seems then trivial to cause an insane
| amount of destruction, even accidentally. Definitely one of
| the more surefire ways to commit arson, especially in
| wildland settings.
| ortusdux wrote:
| IIRC, the last attempt at self-heating cans had to be
| recalled due to fire hazards.
|
| Edit* - https://www.engadget.com/2006-05-05-self-heating-
| wolfgang-pu...
| 13of40 wrote:
| Makes me wonder what happens if you remove the liquid and
| replace it with more thermite.
|
| Edit: Come to think of it, it might just absorb the heat
| and do nothing.
| at_a_remove wrote:
| Tell them that you're a rail enthusiast, and start going on
| (and on) about how they use it to weld together train tracks.
| The more detail you go into about the trains, the more likely
| they are to want to get away from you.
| bell-cot wrote:
| Thermite is basically a quick, low-tech welding compound.
|
| Unless you actually work for the railroad, talking about
| welding railroad tracks may trigger "he's a terrorist
| planning to cause a train derailment" thoughts in the law
| officer.
| qbasic_forever wrote:
| But if you do tell them about your thermite, make sure you have
| a small stash hidden away on your person so you can melt the
| prison bars and escape.
| annoyingnoob wrote:
| On or In? Yikes!
| akiselev wrote:
| Thermite on, ignition source in.
| lief79 wrote:
| That is begging for a story, although I'm guessing the summary
| might be more entertaining.
| aliqot wrote:
| I think United Nuclear was Bob Lazaar's company
|
| edit: yep https://www.justice.gov/civil/cpb/case/us-v-united-
| nuclear-s...
| cactusplant7374 wrote:
| Does he still own it? I would never buy something from a
| con artist like Lazaar.
| irq wrote:
| Sounds like an interesting story, care to share it? :)
| braingenious wrote:
| Back in the early 2000s me and a few friends were playing
| with thermite in a parking lot, igniting tiny piles of it and
| watching it burn into the asphalt.
|
| Somebody across the street called the police and all of a
| sudden two cop cars and a fire truck showed up. They saw we
| were just kids and pretty much just told us to fuck off,
| which I would have, except I had just put down a sizable pile
| of thermite on the ground.
|
| Being both a genius(moron) and civic-minded, I asked if I
| could clean up my pile of thermite first so as to avoid any
| danger to others.
|
| Then I was asked what that is, so I happily told them about
| how it creates extremely hot iron slag that can melt through
| lots of things.
|
| And then me and my friends were interrogated about being
| bomb-makers, terrorists, or if we were planning on doing
| another Columbine. They called in the local FBI (who
| thankfully knew what we were talking about and didn't really
| give a shit), we got a long speech about the PATRIOT act, and
| at the end they said we're all going on "a list"
|
| Ruined my entire evening and I never got to ignite the big
| pile :(
| pazimzadeh wrote:
| What do you do with this?
| jahewson wrote:
| Use it as an additive in paint, resin, etc. to make glow-in-the
| dark stuff.
| kortex wrote:
| Add it to anything you want to make glow-in-the-dark: paints,
| toys, safety equipment. I know someone who produces small batch
| silicone adult entertainment devices for sale, and the GITD
| ones are quite popular.
| hackernewds wrote:
| This worries me as something we find out decades later having
| cancerous or DNA altering properties
| kortex wrote:
| Doped strontium alluminate is not exactly food grade
| (though it is considered non-toxic), but that's not the
| orifice these devices are going in. The silicone matrix
| retains the vast majority of the pigment, which itself is
| fairly inert. It has virtually no bioavailability and any
| of the micrograms of it that might slough off during a
| session will almost certainly be exuded in short order.
| pengaru wrote:
| When you have a bottle full of this stuff, is the interior powder
| getting charged by photons as well via propagation? Or is it only
| the directly light-visible surface that gets charged and is
| glowing?
|
| If the former, does having a larger interior volume of powder
| increase the glow duration, behaving as a sort of rechargeable
| glow battery? Or does it just generate heat or more brightness
| while lasting the same duration?
| dekhn wrote:
| only the surface of a bottle of this kind will emit photons.
| The emission frequency and intensity is not enough to really
| make this propagate light significantly. Instead, you would
| suspend a tiny amount of this in a volume of transparent resin.
| at_a_remove wrote:
| Being kind of a maniac for glow in the dark stuff, this isn't
| quite true. I've filled up flask bottles with glow gravel of
| this variety and, after a "charge," poured it out -- the
| interior gravel did indeed get charged. I think you would
| need much more thickness than a centimeter or two for the
| interiors not to get charged up.
|
| (Yes, I had a bunch of bottles filled up and arranged on a
| rope so they would glow softly during the night because I'm
| weird like that)
| pengaru wrote:
| Since you seem to have done some experiments, what effect
| does increasing the bottle size have on the glow? Duration
| or brightness changed? No visible effect?
| at_a_remove wrote:
| You max out pretty fast. Most people don't understand the
| incredibly wide (over so many orders of magnitude) ranges
| our eyes (and ears) function over. Once you're in the
| dark, the glow is quite visible but it wouldn't have been
| very notable before. And so the absorb-release cycle can
| penetrate rather rapidly. If I had to guess, with the
| gravel, that would die off at maybe a few centimeters of
| depth.
|
| Essentially, you're getting just surface area at a given
| brightness, despite the interior gravel getting charged.
|
| With the zinc sulfides, they really did take much longer
| to hit their max charge, although I never measured it.
| genewitch wrote:
| it emits 520nm but requires 200-350nm to activate. So the
| outside glowing probably won't affect the inside much, if at
| all.
| deegles wrote:
| the description says you can mix it with glaze... do they mean
| ceramic glaze? would the glow in the dark properties survive
| firing in a kiln?
| detaro wrote:
| The description also says: _" It can be mixed with glaze and
| fired in a kiln to make pottery and other ceramic items. Its
| temperature limit is about 1,200degF."_
| deegles wrote:
| ah I missed that, thanks!
| rob74 wrote:
| > _is the brightest, longest lasting, non-toxic & non-
| radioactive, glow-in-the-dark material known_
|
| Well that's a disappointment if, misled by the name "United
| Nuclear", you were hoping for the real stuff
| (https://en.wikipedia.org/wiki/Radium_dial)
| status200 wrote:
| They have a small section for the real stuff:
| https://unitednuclear.com/index.php?main_page=index&cPath=2_...
| akiselev wrote:
| United Nuclear sells the real stuff like yellowcake for
| $15/gram [1] so if you've got hydroflouric acid [2], a big
| gaseous centrifuge, millions of dollars, and a death wish, you
| can make weapons grade uranium too!
|
| _PLEASE DO NOT ATTEMPT THIS AT HOME_
|
| [1]
| https://unitednuclear.com/index.php?main_page=product_info&c...
|
| [2] https://www.laballey.com/products/hydrofluoric-acid-
| electron...
| foobarian wrote:
| Any idea how it is legal to ship this kinda stuff?
| akiselev wrote:
| You'd want to ship the yellowcake as HAZMAT Class 7
| radioactive and it cannot be shipped outside the United
| States without an NRC export license (probably continental
| US only too).
|
| The hydrofluoric acid should be shipped as HAZMAT Class 8
| corrosive.
|
| Edit: If you're asking _why_ it 's legal to sell this
| stuff, naturally occurring uranium is over 99% U238
| isotopes. Extracting useful U235 from it requires some
| really nasty chemistry, insane amounts of electricity, and
| very specialized hardware like gaseous centrifuges powerful
| enough to separate isotopes. Buying the thousands of
| kilograms you'd need to build a bomb would set off a ton of
| alarm bells all up and down every major government but
| small samples for educational or novelty purposes aren't a
| concern.
| Dork1234 wrote:
| Full Quotes for reference " Our Europium UltraGlow(r)
| phosphorescent (glow-in-the-dark) powder is the brightest,
| longest lasting, non-toxic & non-radioactive, glow-in-the-dark
| material known"
| genewitch wrote:
| the copy on the page cuts off at that last Et, though, so
| without clicking the "MORE" button ...
| RobotToaster wrote:
| Or at least tritium, but powdering that could be difficult.
| at_a_remove wrote:
| This is far better than the zinc sulfide and friends of my
| childhood. First off, total glow is stronger. Second, the glow is
| much longer, almost an order of magnitude to my untrained eye.
| Third, you can get a lot more variations on color if you're
| willing to sacrifice glow time. The zinc sulfide of my youth came
| in green (typically) and red (very rarely) and, if it was paint,
| smelled bad.
| Hgfyrnsjdhfh wrote:
| Anyone knows how this relates to SuperLuminova used in watches?
| There is always much discussion in watch forums regarding how
| good the lume is in different watches, and this looks like a nice
| contender.
| zamadatix wrote:
| Sounds like strontium aluminate glow powder (that's where the
| europium doping would come into play) with a heavy marketing
| spin. I've got some of that and it's definitely better than the
| old zinc sulfide glow in the dark stuff most of us grew up with
| but I'm not sure it ended up being worth buying just to see what
| the difference was. You can get it for a fair bit cheaper than
| this site but maybe the novelty of it coming in a box labeled
| "United Nuclear" is worth it or maybe they do a particularly good
| job at synthesizing it compared to everyone else.
|
| In a similar vein I also went and got a ton of the most saturated
| pigments I could find after seeing some videos about it. To be
| honest most colors were disappointing. Definitely more saturated
| than even a good HDR TV or monitor but not impressively so. It
| might have been more fun in the days where having a monitor that
| properly covered sRGB accurately was uncommon but now we're used
| to phones with good dp3 or wider gamuts stretching things out
| because it looks more vivid and the absolute difference between
| that and the limit of vision is less of a leap. The ultra deep
| non-reflective blacks are as fun as advertised though. They made
| for less an "oh, it's a really dark object" experience and more
| "a piece of my living room is missing and turned into an empty
| hole" feeling.
|
| Edit: While I'm throwing out chemistry related party trick items
| I've always been a fan of element cubes and have grown quite the
| collection now. The most fun of them all is the tungsten block
| which is dense enough to catch you by surprise. Be careful not to
| get a "tungsten alloy" one, it eats away at the density. It's
| also great to just toss around/fidget with... albeit one of the
| tungsten spheres might be better for your desk and toes.
| dekhn wrote:
| If you want that kind of effect, LEDs or lasers are your best
| bet. The colors are intensely saturated, and absurdly bright
| (different color-specific star LEDs on PCBs, mounted on
| aluminum heatsink, run near the current limit for the LED).
| joshu wrote:
| What are the other pigments you tried?
| aetherson wrote:
| Where do you get the ultra-black paints?
| samch wrote:
| I like Stuart Semple's store mostly because he's anti-Anish
| Kapoor [1]:
|
| https://stuartsemple.com/store/
|
| [1] https://en.wikipedia.org/wiki/Anish_Kapoor?wprov=sfti1
| perihelions wrote:
| Here's an HN thread about tungsten cubes,
|
| https://news.ycombinator.com/item?id=28318754 ( _" My Tungsten
| Cube"_, 330 comments)
| eps wrote:
| Oh, yeah, I remember that one. Got $250 lighter after reading
| it. No regrets.
| blacksmith_tb wrote:
| I have always coveted a chunk of tungsten, but be aware that
| there's some implication that it's a carcinogen[1] though
| that's a bit unclear if it's actually other metals it is
| alloyed with (in which case the purer the cube...)
|
| 1:
| https://academic.oup.com/milmed/article/172/9/1002/4283401?l...
| cwkoss wrote:
| I suspect handling a tungsten cube delivers very little
| tungsten into your bloodstream, even if you lick your fingers
| afterwards. I'd imagine munitions or metalshop
| grinding/polishing generates many orders of magnitude more
| microscopic metal dust.
|
| You could always coat it in polyurethane - a clear coat
| shouldn't diminish the impressiveness of the density.
| dreamcompiler wrote:
| I like to hand someone a Tungsten cube, let them experience the
| weight, then toss them one of Magnesium that looks exactly the
| same.
|
| "Here, catch!"
|
| They act like I've just thrown a cannon ball at them but then
| they're amazed because it's as light as a cotton ball (almost).
| wiz21c wrote:
| If I eat it, what happens ? :-)
|
| Joke aside, wikipedia says:
|
| > Europium is one of the rarest of the rare-earth elements on
| Earth
|
| Maybe we should regulate its use ?
| kortex wrote:
| It's used in miniscule quantities in glow powder. It's
| commercial use as a pigment/phosphor in display, lighting, and
| safety equipment far outweighs its use by hobbyists.
| julienreszka wrote:
| So that's what the skin of CIA agents is made of
| tohnjitor wrote:
| I wonder if this is what goes into Luminlay. Glow in the dark
| position markers for guitar and bass.
|
| https://luminlay.com
| blamazon wrote:
| I don't need 50 pounds of glowing powder... I don't need 50
| pounds of glowing powder... I need that money for living...
| 01100011 wrote:
| I bought something like this:
| https://patrickadairsupplies.com/products/ultimate-neon-glow...
|
| from another supplier about 8 years ago and still haven't
| managed to use any of it, beyond just being in awe of how well
| it glows in response to a UV light.
| genewitch wrote:
| take your UV light and a jar of peanut butter into a dark
| room...
| gwbrooks wrote:
| I'm glad I'm not the only one contemplating poor-but-amazing
| life choices...
| tomcam wrote:
| You definitely are not
| tag2103 wrote:
| Perhaps a smaller amount? I know the conflict... I'm checking
| my play money kitty for exactly this. =)
| knodi123 wrote:
| lol, I bought a dozen bright tritium vials as gifts for some
| coworkers, but I was going to deliver them in person a couple
| of months later, so I held on to them until then. It was hard
| to let them go!
|
| Glue one to your deadbolt handle, and you can see whether the
| door is locked at a glance, from across a dark house! Hang
| them from your ceiling fan pulls, and no more fumbling around
| for them in the dark! (for complicated reasons, we don't
| control ours with the switch) Putting one on your keychain is
| a no-brainer, but still an awesome idea! And so on...
| poopsmithe wrote:
| There is some good humor on this site. :)
|
| Depending on the answer given to the quiz on the bottom of the
| Chemistry Experiments page, visitors are directed to one of
| Thomas The Tank Engine, Disney, or the actual safety page.
|
| https://unitednuclear.com/chem_exper.htm
| AdamH12113 wrote:
| I believe this is the same stuff that makes up Stuart Semple's
| Lit glow powder and other such glow-in-the-dark pigments. It's a
| mix of europium and dysprosium. IIRC what makes it last so long
| is the addition of trap states for the electrons, where instead
| of quickly re-emitting absorbed photons they can give up a little
| bit of energy to remain in the trap state, and are later bumped
| back out of that state by random thermal fluctuations.
|
| I tried it out on some cardboard and it's almost as impressive as
| the marketing makes it sounds. I can hold a cheap LED headlamp
| next to it and wave it over the surface, and it leaves a bright
| green streak behind that glows visibly for many hours afterward.
| It doesn't stay _bright_ for very long (I suspect it 's an
| exponential decay), but for such a short exposure I wouldn't
| expect it to.
|
| The blue version is less impressive because you need sunlight or
| a proper UV light source to charge it up, but it does work.
| dekhn wrote:
| By trap states do you mean "forbidden transitions"
| (phosphorescence lasts longer than fluorescence because the
| electrons have to go through a very low probability mechanism).
| AdamH12113 wrote:
| I honestly don't know the details; I got this from a vaguely-
| remembered YouTube video. From some quick Googling what
| you're saying sounds right.
| aliqot wrote:
| Doesn't Noodlers also use this?
| ultrasounder wrote:
| https://unitednuclear.com/chem_exper.htm. Cracked me up. Now i am
| going to setup a dexters lab in my garage and blow things up with
| my 14 year old. Right now he hates chemistry but this should
| motivate him.
| nimbius wrote:
| ah united nuclear, purveyors of high quality reagents for the
| discerning, jittery, sleepless grad student found in only the
| most prestigious government watch lists and infuriatingly
| paywalled technical journals since nineteen sixty-one.
|
| Thats right United Nuclear, a beguiling reminder to mankind that
| the entire predicate of the Iraq war could just as easily have
| been a secret santa gift.
| thebigspacefuck wrote:
| Can someone explain what this means?
| q845712 wrote:
| it's a slightly poetic and roundabout way of saying "This
| website will sell you some funny toys and some slightly
| radioactive stuff [like uranium ore, i guess, from previous
| comments]. "By the way, remember when the US invaded Iraq
| because we claimed they had stuff which is [allegedly, maybe,
| i dunno] remarkably similar to what you can order as a gift
| from this website?"
|
| A "secret santa" is a gift giving tradition where you pool a
| group of people together and each person gets the name of
| someone and buys them a Christmas gift (generally within some
| price range) but they don't know who bought them the gift. So
| it's an opportunity to buy joke-gifts for someone you aren't
| particularly close to, if you happen to draw their name.
| [deleted]
| kortex wrote:
| United Nuclear is quite the nostalgia bomb. My first experience
| with them was in 2008, buying a chunk of uranium ore to trigger a
| geiger counter to use as a true random number generator. I'd say
| "where else can you just buy a chunk of uranium ore" but... [1].
| Of course at the time it wasn't something you could buy on
| amazon.
|
| 1 - https://www.amazon.com/Images-SI-Uranium-Ore/dp/B000796XXM
| KaiserPro wrote:
| If you are in the UK and want glow in the dark pigment suitable
| for the home environment, then
| https://culturehustle.com/collections/powders/products/lit-p...
| is a good start.
|
| Its not quite as bright as superluminova (the stuff thats in
| watches) but its cheap, easy to use and is long enough lasting to
| be good enough.
| [deleted]
| meremortals wrote:
| This site (United Nuclear) is run by Bob Lazar
|
| https://search.brave.com/search?q=bob+lazar+united+nuclear
| Robotbeat wrote:
| I wouldn't expect any less. This is what the internet was made
| for!
| arethuza wrote:
| Europium is used in Euro notes as an anti-counterfeiting measure:
|
| https://www.scoopwhoop.com/world/do-you-know-why-euro-bank-n...
| Yaa101 wrote:
| Interesting article, but not entirely right.
|
| The fibers are not in the note but painted on top of them,
| neither side of the note is the same fiber wise, also they do
| get wear with usage. The fibers on the new notes are different,
| they are more compact and illuminate.
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(page generated 2023-02-06 23:00 UTC)