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Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
Cesium and Rubidium. Course.. those are so water reactive that they should be considered explosives, other then that, its not radioactive because that won't get through customs, and anything else I can think of would probably be too expensive or obtainable here already.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
rp181 wrote ...
Nice items, what is the caffeine for? Toxic stuff.... I think the elements are toxic... i guess osmium and europium.
BTW, united nuclear is expensive.... but nice on the aerogel. how big are the granules?
good guess, osmium is one of the elements - the other, knowing that, should not be too hard to guesstimate - and I know United Nuclear is on the expensive side, but the chemicals are very high purity, and they are naturally presentable in a collection... the Caffeine is for my collections only, the Aerogel and Thermite are for actual experimentation (I am making Aerogel insulators, by suspending the Aerogel in substrates, and I can't get a reliable source of Thermite at the moment... my former non-ebay supplier had to shut down due to low business)
as for the size of the Aerogel granules, a dime is provided for scale
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
It's been three days (well, two and a half) and I am posting some new samples, and some shots of others that I have had...
first photo, from left to right (top them bottom): Sodium Silicate, Trinitite (start bottom); Yttrium, Ferrofluid, heavy water, Silver Disk, caffeine, Aerogel, Thermite, Rocket Nozzle Mix, Sodium Acetate, more Trinitite, Uranium Metal
second and third photos: Osmium
fourth photo: Selenium
fifth photo, from left to right: Magnesium, Uranite, Autinite, Gallium (my favorite, i like to make image-bearing mirrors with it ^_^)
ADDITION: Forgot the Iridium! - last two photos (and that was the second element, next to Osmium, that no one guessed... at least that tried to guess)
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
I keep my small collection of minerals and pure metals in a glass case - those which are of interest to the eye and brain. I have an old, but good, Vickers metallurgical microscope and find that examining the elements in their pure state - as crystals for example - can sometimes help me get a better understanding of the element as a whole.. It's one thing to see an artist's representation in a book, and another to see the same crystals under the microscope, where they are, in a sense, brought to life!
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