Gilded

Yes, the RGB element collection is indeed very nice; every element from hydrogen to uranium (1-92). I was devastated when I heard that they don't ship the basic set outside UK anymore; only the deluxe one. £1200 is a little bit too much for me. :<

Now then, should we perhaps discuss some pyrotechnics for a change?

Holding solid carbon dioxide with your bare hands is a lot of fun too.

r1dermon, I have my sources. Anyway, these should probably be discussed in the element collecting-thread. Although, the Sigma-Aldrich etc. are good sources of pyrotechnics related compounds, too.

I think he means the alien from the movie Alien, and if we were to make a similar acid. Seems like some sort of super acid to me, that can dissolve steel with ease. Some of the super acids don't even have a pH function defined yet.

"the biggest break-seal is a 5 gram. which for cesium would probably be close to 700 dollars."

Even though cesium isn't listed in the international trading values (such as for example gold and other precious metals are), I think in 2003 1g of >99.9% cesium in an ampoule was roughly 50 dollars a piece. So if you find cesium for a lower price, you might even want to invest in it.

And Aspirin, I'd use 50 lead balls. That's probably the most common amount (if they're near 1cm in diameter).

Yes, I know about the Sigma-Aldrich group. My dad (being a psychiatrist and all that) told me about it, but I don't think they ship personally, only to registered companies. :<

Edit: By the way, to those interested in element collecting, if you have access to Sigma-Aldrich, they have a huge selection of high purity metals.

When you have liquid oxygen you can carry it around and whenever you feel like, just have a sip of refreshing, 100% oxygen... Or don't. By the way, isn't it rather dangerous to breath near 100% oxygen all the time?

Hmm... I've also wondered how large a crystal must be to be seen with bare eyes from a distance of 20cm or so; somewhere near 0.1mm in diameter if your vision is good? It would be nice to think that a really, really small crystal you can barely see consists of like ten million atoms.

It's also amazing how people make very small things by arranging atoms or by laser cutting. A good example is the IBM-logo, the blood cell-sized bull-statue (unbelievably natural looking) and the world's smallest ice crystal; exactly 6 molecules of H2O.

"I just dissolved my finger and I'm feeling super about it!" :<

Aspirin, where did you order that Mg powder from? I'm interested.

If you had a device that would reconstruct the universe to the exact state it was 100 years ago, wouldn't that be time traveling, since time (as we currently know it) is just change and the way we observe it? :|

And Sayo, the SkyNet has already begun!

http://www.skynet.cz ! Ayieee, run for the hills!

It would be very interesting if scientists could repeat... umm, know what's it called in English *checks dictionary* abiogenesis? Well, what I mean is the event where lifeless matter became living matter (or an early stage of actually living matter). If the evolution theory was a wooden tower, creating life from lifeless matter / repeating the abiogenesis would indeed be like steel girders to fortify that tower... Ok, lousy metaphor but you get the idea.

A man dies and goes to Heaven. He then wanders around, and suddenly finds himself in a room with a lot of clocks. When he looks more carefully, he sees that every clock has a country's name on it. There's Finland, Australia, China... and so on. The clocks have only one hand, that moves very slowly for most clocks. The man can hardly see them move; once in a while one of the clock hands move a bit forward. Some don't move at all. "Yo, God, what's up with these clocks" the man shouts. "Oh those ones" God answers. "Whenever the leader of a country says or thinks something stupid, the hand moves forward a bit" God continues. "Riight... But where's the clock of USA?" the man then asks. "Oh that. It's in the bathroom, as a cooling fan."

[it was a joke, although a rather lousy one. Please don't get offended by it. ]

More of Gilded's crappy math/chemistry/stuff related T-shirt slogans:

"2 (sqrt)1787569 4 U"

"I paid http://www.scienceforums.net 15 bucks and all I got was this shirt."

"A bear and pyrotechnics as a hobby are very similar. The other one will cripple you. And the other one is a furry animal."

"Stop Bohring me, Niels!"

I don't know what's the case with HF:SbF5. 50% solution is 10^18 (yes, billion billion) times stronger than super concentrated sulfuric acid.

If you didn't notice, the thread is about Ice wanting to know about counting the area of a circle without a calculator; therefore, you need to approximate quite a bit.

Why do you need to approximate, eh? How about pi being an irrational number.

Btw, World Record: Goto, Hiroyuki | Japan | 42195 digits, World Rec since -95

I think a good approximate for pi is 3.1416 since the next after the five there's a 9.

Memorizing pi is probably the most idiotic thing to do, but for some strange reason I've memorized up to 35 decimals. I wonder what's the current world record...

Hmm... Maybe you are correct. Perhaps lead was used to plate tooth holes in the Great Era of Element-Related Stupidity.

Lol, now farmers can defend their homes against attack helicopters with spuds.

Heh, a fun fact, that hatter thing. I think the Romans made a sweet syrup called "sapa" by boiling soured wine in lead pots, making it rich in lead acetate. So, lead lead to lead poisoning amongst Roman aristocrats.

Remember kids: No matter how sweet something may taste, don't eat it if it's packed with lead.

If I remember correctly, Lincoln (or someone of the US presidents) had false teeth made of a lead (or some lead compound). Yipes.

Hey Aspirin, next time try shooting a depleted uranium shell from the cannon. And find yourself a pine table so you don't have to damage the wall.

It certainly sucks. "Ooh looky, nice calcium. Let's take it to the bone! YAY!" Same thing with radium too, if I'm correct. The guys who painted antique clock hands with radium paint actually licked the brushes to make a sharp point. It's told that when it was a dark night, you could recognize a clockpainter for his glowing teeth and hair. :<

1mol of OH- in a liter of water = pH 14. I can't see why it couldn't be > 14.

Umm... You made a hole in the wall with a glass marbe or something? If the wall is made of something stronger than wood, I'm impressed.