Gilded

Oh bugger. :/ Luckily, most of the following daughter products have a under 1h half-life, giving some extra W as some of them have even up to 7 MeV decays. Not that it would help in the 1g case though. :<

About the radium atomic reactor thingie, I'd imagine that 1g of radium-226 should do the trick nicely, as its disintegration rate is 3.7 * 10^10 disintegrations per second. And if someone doesn't know, that's the definition of a curie, as I mentioned in another thread.

O, a pine table! Dark, thick evil surrounds it. Where's the damn chainsaw?

Let's see here... A gram of radium-226 (which is the isotope used in clock painting) undergoes about 37 billion disintegrations / second. Yipes. Btw, a "curie", and old unit, is defined as the amount of disintegrations that happens in a gram of Ra-226. Now I can imagine why Marie Curie got cancer.

Hey, that's the guy with the crazy radium watch hand I saw on eBay some time ago. Seems like no one hasn't bought it yet. With 60 000 CPM counts, I can't think of a person who would voluntarily have it around... except for me.

Mercury, thorium and depleted uranium are alike in the aspect that a lot of them exists, yet they are so dangerous and regulated that they're not usually sold to public (especially with the depleted U). Btw, I wonder what the nice ladies at the post office thought today when I collected the lanthanides. Huge package that says "Metals for research use" and then comes a 16-year old to collect it.

Ok, I think I got it. But could you point me to a site that has some basic information about the bit advanced nuclear physics, since the nuclear recoil things and the like are starting to get over my head.

Yeah but you get a COOL glass vial that says "Hg". Edit: btw boris, the correct url is http://www.labpakchemicals.com

Some Martian hobo probably cleaned the solar panels with a sponge when the rovers stopped at the traffic lights.

Hey wait a sec... "While neutrons with a large KE deposit that much more energy per interaction, the interaction probability can drop, and the overall danger goes down." Yes but the equivalence dose is calculated using the absorbed dose as a base value. So it isn't about the probability of interactions in this case. Although, that's the answer to "why should I use borated paraffin in neutron source experiments". Hmmh... Or did you mean that if a person receives a 1 Gray dose of 1 MeV neutrons or a 1 Gray dose of 21 MeV neutrons, the person's atoms absorb about four times less neutrons in the case of the 21 MeV neutrons?

"Ill probably buy a bunch of mercury switches and just empty them into a vial." http://www.elementsales.com/pl_element.htm#hg <- nice 60g vial of mercury for 35$ I wonder where I could get cheap promethium... then I would have all the lanthanides. I know RTB sells promethium watch hands, but the 45$ is quite much for such an item. :/

"Iirc, triploidy (and other odd chromosome numbers) is how we have seedless grapes and other seedless fruits." I always wondered how they make those.

Oops, I meant similar in the way of having MeV at the y-axle and a probability of ionization on the x. Yeah well, guess we've solved that now. Heh, I also tried finding an answer for "how can you know if a nucleus is fissionable?". http://www.physlink.com/Education/AskExperts/ae659.cfm I trust that's you with the first answer there, swansont?

Yay, my lanthanide set (no promethium, but scandium and yttrium ) from David Hamric arrived today. The thulium looks exceptionally nice, as do all the other samples. Quite big pieces too.

"yoi say Be gets converted to C12 what happens to the proton(s)?" Say what now? Be-9 (4 protons 5 neutrons) + alpha (2 neutrons 2 protons) -> C-12 (6 neutrons 6 protons) + a neutron.

"I highly doubt that he still fully understands what he did wrong." It's sad how sometimes violent media has that kind of effect. :< "They did it in the game/movie too. Why is it wrong to do it in real life?"

"how dangerous are neutron emissions compared to say gamma rays?" When calculating the equivalence dose of radiation, all ionization-capable photons (including gamma) have a Q factor of 1. Neutrons, as you can see from the list, can have a Q factor of 20. Alphas, fission fragments and other similar heavy particles have a Q factor of 20. So if I had to choose between 0.2 Gray of 1 MeV neutrons or 1 Gray of gamma, I'd probably go with the gamma. Btw, it seems that I forgot the 2 MeV - 20 MeV part from the neutron list. Fixing... Still, I don't know why for example 21 MeV neutrons aren't as dangerous as 1 MeV neutrons. Probably has something to do with neutrons not being absorbed by the bombarded atoms (no matter what swansont says :> ).

OK, I checked it. It says: Q factors of neutrons by energy under 10 keV = 5 10 keV - 100 keV = 10 100 keV - 2 MeV = 20 2 MeV - 20 MeV = 10 over 20 MeV = 5 Why is this?

Wow, quite awesome. May 19th... Awww man.

We get even up to 0.4€ for 1.5l bottles.

"Don't tell me video games and movies with violence do not affect children." It's quite obvious that letting kids watch violent movies or play violent games in their early years will have a negative influence on them. The goddamn neighbor kiddies even used to punch and kick me in the groin due to too much Smackdown watching. :<

"I believe he means that as the ions on the surface of the solid compound move away, into solution, the ions underneath are then exposed to undergo the same process." Heat makes this process faster because... ? The excited state of the ions causes them to move away more easily?

"yes its says its duty paid, i suppose i could just use methanol" I hope it isn't for drinking purposes.

"the O2 comes from the sea by the action of tiny plant life Algae :)" It's odd how people usually think that rainforests produce about all of the world's oxygen. Of course, they do produce quite a bit, but big trees consume it quite a bit. "and then a wale comes and eat them, lol." I thought whales eat mackerels and the like mostly?

I heard scorpion shells (I'm not sure if it's some specific species) glow when exposed to UV-light.