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Aqua-regia
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Easy, cause was a handycam video very close I gained from this a foto with vlc media player
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aga
Forum Drunkard
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How did you know it had Uranium in it ?
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NedsHead
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The shop had a heap of Uranium glassware, probably all came from the same collection, the bowl was an odd piece that didn't match any of the sets in
the collection but looked to be the same glass
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violet sin
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in the past I have rewired a couple dollar store LED flashlights with UV LED's for identification purposes. They work great. Just unsolder the crappy
white ones and replace with eBay versions. There are keychain version of UV lights that can be used as purchased, occasionally found randomly.
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The Volatile Chemist
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Quote: Originally posted by violet sin  | | in the past I have rewired a couple dollar store LED flashlights with UV LED's for identification purposes. They work great. Just unsolder the crappy
white ones and replace with eBay versions. There are keychain version of UV lights that can be used as purchased, occasionally found randomly.
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I had one for a while from a kid kit, but at twelve, everything was better when hooked up to a nine volt battery...The LED turned a great violet color
for a second, got very bright, then burnt out. Oh well, AS&S sells $8 UV lamps, which is crazy cheap. Gonna buy some when I get my next order.
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violet sin
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You can get a 50pc pack of UV LED's for less than that. I finally whittled my pile down to 5 or so. Time to buy more I guess. Took me quite a few
years and many small projects.
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arkoma
Redneck Overlord
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Location: On a Big Blue Marble hurtling through space
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A Feller and his tripleneck
w00t
View out the "front" door
[Edited on 10-28-2015 by arkoma]
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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violet sin
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Awe man, that.looks.like great fishing! Jealous a lill bit.
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arkoma
Redneck Overlord
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33°18'14.66"N
93°43'50.55"W
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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Eddygp
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He is back!! 
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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Brain&Force
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The absorption spectrum of holmium sulfamate, I used an LED and diffraction grating with the solution to get a spectrum and photographed it with my
phone.
<blockquote class="imgur-embed-pub" lang="en" data-id="appmfzf"><a href="//imgur.com/appmfzf">Taken with a diffraction grating, camera,
and LED light.</a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script>
At the end of the day, simulating atoms doesn't beat working with the real things...
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JJay
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How do you keep your thermometer out of the stirring vortex?
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violet sin
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What LED did you use to do that? Also, is the diffraction grating just a bit of CD cut to a convenient shape? It's pretty cool! I had wondered if
there was a convenient file to burn to a disk to provide a solid background for the grating or if a blank CD is used. I remember the kits people
bought that used a piece of CD/DVD for the grating, but of course there are readymade versions.
If you don't mind, could you post a pic of the setup you used? I find this interesting. Amongst other things I need to clean up, I have a 100ml or
so of CoCl2 that would definitely be colored enough to show. I bet the solution I got from leaching Osage orange sawdust would be
interesting as well. Bright yellow and it fluoresces green/yellow/orange depending on a few factors. Roots, bark or wood and concentration strength.
Thanks for the share
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The Volatile Chemist
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Arkoma, nice place, great glassware 
| Quote: Originally posted by Dmishin |
If you are going to try 2NH3+H2SO4, then it is not really needed, reaction finishes instantly, if acid is sufficient and reagents are mixed well.
However, if your reagents are concentrated (at least, more concentrated than 10% NH3 and 43% H2SO4, I used), mix could start boiling.
Ammonium sulfate can also be bought as fertilizer (haven't seen though), and of course, chemicals shops have it, in good purity.
If you have a lot of ZnSO4, and don't mind wasting half of Zn, using fertilizer ammonium nitrate (or chloride) is an option. Double Zn-NH4 sulfate is
much less soluble than its constituents. Mix concentrated, hot solutions of ZnSO4 and NH4NO3, and double salt will precipitate:
2ZnSO4 + 2NH4NO3 + 6H2O -> (NH4)2Zn(SO4)2*6H2O ↓ + Zn(NO3)2
(haven't tried exactly this reaction, but it must work)
[Edited on 26-10-2015 by Dmishin] |
I was referring to the fume hood for catching gasses if I were to boil off the water. I hate having to do this if any of the reagents are acids.
If this procedure does work, I'll have to try it (with ammonium chloride and zinc sulfate. Not because I particularly desire ammonium chloride, but I
do like the production of double salts, and this one sounds interesting.
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nitro-genes
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Added some hot ammonium dinitrosalicylate solution to an erlenmeyer containing some other waste solutions of nitrophenols, upon cooling down this was
the result, covered the entire bottom.
[Edited on 31-10-2015 by nitro-genes]
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Dmishin
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Birefringence in a triglycine sulfate crystal.
[Edited on 5-11-2015 by Dmishin]
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Tsjerk
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Nice crystal Dmishin,
Would this crystal separate a non-polarized laser beam in two? Making the two beams polarized?
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Firmware21
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Mood: Ņ͈̣̭̺̈ͬ͊̔i̓̿͑ͯ̂ͪ҉̸̺̀t͉̣͕͙̟̪̅͐͂̏͌ͭ͗̑͝ṙ̶̛̙̥̝̻̟̓ͬ̾ͧ͒͘ͅa͒͊ͯ̾̑̏̌̓̕҉͚͚͓͔͙͚̥t͆̌͑ͩ̐͗
͖̻̲̪̲̙͘ͅe͙͕͙̙̤̤̫̒ͩͣ̅̊̍̉͒ͬ́͟ͅs͈̬̮̥̻͂ͥͨ̂ͮͨ͒́͠ !!!
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The joy of playing in a lab that makes tons of fluorescent compounds. These are NDIs
*Obviously under U.V light.
[Edited on 6-11-2015 by Firmware21]
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The Volatile Chemist
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Both of the last two photos are sweet. Chromatography of fluorescent compounds...
I'm going to try to make some thin plates for chromatography this weekend.
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greenlight
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Potassium chlorate crystals found in my cell electrolyte after being in the fridge for two days:
[Edited on 17-11-2015 by greenlight]
Be good, otherwise be good at it
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NedsHead
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Nice Potassium chlorate crystals greenlight, I haven't seen chlorate crystals like that before, the structure looks similar to Bismuth
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greenlight
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They definitely are Potassium chlorate. After electrolysis of Potassium chloride the cell contents were left at room temp for 2 days and then put in
the fridge and left for a further three days to precipitate the rest.
The whole top layer was a blanket of these joined crystals.
Be good, otherwise be good at it
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The Volatile Chemist
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Nice. Sounds like a successful prep. Try decomposing some in a flame, if you haven't already
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Zephyr
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Copper phosphate finally dried out:
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TheIdeanator
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| Quote: Originally posted by greenlight | Potassium chlorate crystals found in my cell electrolyte after being in the fridge for two days:
[Edited on 17-11-2015 by greenlight] |
They make hopper crystals? Cooooool.
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