coke

yeah, thats what i meant... there will be no fallout... and I guess gamma radiation can cause cancer, so it will not be very clean...

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and ps. coke... listen to insane alien on this one. he is accurate on this and you are as he states, mixing up your wording.

yeah i know, i realized that gamma rays in itself were radiation a minute after i posted it but had to go somewhere so didn't have time to change it

how well you are able to figure out things

not how much you know, but how complex ways of thinking you can employ in your brain

yes... too easy

I think the energy comes out as gamma rays, heat, light, etc. And gamma rays are extremely harmful but not radioactive.

The radiation from nuclear bombs I'm pretty sure comes from radioactive isotopes in the fallout.

2 easy math riddles... i know the answers but i'm not telling!

1) You are using the scales on the left picture...

You have 9 coins. One of them is fake and weighs lighter then the other ones. After using the scales only twice, how do you figure out which coin is fake?

2) You are using the scales on the right picture (with exact amount)...

You have 10 stacks with 10 coins each. 9 of the stacks are real, and contain coins that weigh 1 gram each. 1 of the stacks is fake and contains coins that weigh 1.1 grams. After using the scales only once, how do you find the fake stack?

i like this one online because it is timed (the longer you take, the worse your score) and I'm one of those people who doesn't read the questions all the way and never checks his answers... and still gets them right

i think the tests usually give too good a score, i get like 130-140, the one above i got like 151... on a proper one i agree mine would be much lower.

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oh i get it ennui...

you got a bad score on the test so you posted this thread to see if it should be taken seriously.... thought I wouldn't figure that out?

I would try some type of acetylcholinergic - and it has to be cns affecting...

acetylcholine is what transmits signals between almost all your nerves

nicotine, for example, increases speed your brain works, which i can agree with, i am definitely a lot sharper after smoking a cigarette once in a while...

dopamine/adrenaline i think increase concentration more, not the actual speed.

but coffee feels nice with a cigarrete...

i don't think increasing sodium or potassium is a good way, their balance is necessary in much more than nerves, i.e. kidney, etc.

and you don't have to smoke as an acetylcholinergic, consider buying something like l-galantamine or huperzine-a...you can buy it online... never tried it though... tried piracetam it was too mild i think...

oh, and don't consider using organophosphates! true, they're acetylcholinestearase inhibitors, so they increase acetylcholine, but they don't work in the brain/central nervous system! they will just make all your other muscles tense up (including your lungs, suffocating you)

Dopamine injected into the bloodstream does not pass the blood-brain-barrier, neither can adrenaline, endorphin, serotonin (I'm not a big fan of serotonin).

No doubt tobacco (and not just nicotine,for example there are some alkalods that inhibit MAO, like harman) increases dopamine. You know one of the meds for quitting smoking, bupropion (zyban, wellbutrin)? That's basically a weaker ritalin.

I smoke cigarettes ocasionally (no more than 2 a day) but i take very deep puffs so afterwards i almost feel like falling down... not hungry but cup of coffee feels good... by the time that fainting feeling ends, i feel pretty sharp for about 2 hours. What else I like about nicotine is that its a potent agonist of acetylcholine at the brain, which speeds up your brain processes. Potent neurotoxin at higher doses.

Come on, surely this is the obvious answer...

 

 

You'll just have to wait and see if there's chemistry between you.

★★★★★

Although I think they could have made better use of the domain name chemistry.com.

Note that there's a difference between silicon and silicone! I have yet to see a girl with metalloid implants. Silicone is in fact a polymer.

Nah, weight lifting is definitely not bad for the heart. Weight lifting is considered anaerobic, but still it stimulates blood flowing through your muscles, and does get you breathing harder and gets your adrenaline pumping. There is some cardiorepiratory training when lifting, so if anything it is good for your heart.

Yeah steroids can cause the heart to gain mass (many other internal organs also, thats why they get a 'turtle belly')

You know how to make a compass out of a needle and magnet right? Just swipe the positive side of the magnet to the point of the needle a couple times, you'll get the electrons to move to the point, balance it and it will stal magnetized long enough to show you where south is.

I think when they say proton, they mean H+ ion (which is basically a proton)...

Of course as you understand, such a highly positively charged particle is not just going to stay ionized by itself in water... its going to find some electrons on some other molecule and try to stick to it... i.e. H2O + H+ > H3O+

NH3 + H+ > NH4+

Apparently it's a bit more complicated than that, but wiki says its used to create very high purity H3O+, so i think that's close enough.

Ok, this was a stupid thread, I was never intending to do organic chem experiments, I just wanted to see the types of experiments you guys do... a great example was nylon, skeptic mentioned, i think i saw it in a popsci do it yourself thing once...

You gotta love DuPont... all of these things- nylon, teflon, neoprene, kevlar... those were all originally trademarks

Anybody want to try this problem?

I know the answer and how to do it, I'll tell you later.

Anyways...

You have a random number generator, that generates the numbers 1-5 randomly (equal probability of each).

You need to make a random number generator out of it that generates the numbers 1-7 randomly (equal probability of each).

How do you make it out of the first generator? For example, you can take a number from the first one, and run it through the first one 5 more times, and say if you get some answers tell the generator to start over again, etc.

yeah sisyphus, i've got kind of stuck on trying to create the equation, i think it's something of this nature

[math]x\sum^{\infty}_{1}.5^n = my\sum^{\infty}_{1}.5^n[/math]

x= dist. covered

y= time passed

m= speed

n= goal number

but basically it simplifies to x = my... plus mathemetically you know .5 + .25 + .125 + .0625 ..... = 1

it would make more sense as y = mx, since usually x should be the independent variable, time. but since i already put x as distance in my last post...

lol iNow...nice one

I think that plants might need waves of light such as ultraviolet or infrared, which come from the sun but maybe not from ordinary lamps..

i like your avatar picture by the way cameron...

and i'm guessing thats jujitsu on yours, iNow?

is it possbile to just get some contacts and put some type of paint or adhesive on them{that still alows your eyes to breath} and does the same thing? anyone know of anything like that? i doubt sharpie would be too healthy.

lol i wouldn't try it... if i accidently touch the inside part of my contact when putting it on, i'll feel the dirt bothering my eye... and if you paint it, the paint will get on your eyelids, which will get back to your eye...

what are scleral contacts? cover more than the iris? sound horrible...

When the subject of antimatter comes up, one of the things that also comes up is antimatter bombs. Since antimatter annhilates matter to create pure energy, it has the highest energy density than anything else ever could...

so maybe a grenade size bomb could have a nuclear size reaction (according to CERN, the 20 or so antimatter atoms they created can power a lightbulb for 1 minute!) 20 atoms! A grenade has like a thousand million trillion quadrillion atoms! That's like powering a city for 5 million years!

However, despite this great energy density, its not like nuclear weapons where you could already find this great amount of energy stored in the uranium mines or whatever...

So to create an antimatter bomb, first you'd need some type of nuclear reactor, to get the electricity to generate antimatter... and then you have to use a strong magnetic field to contain it...and given that the efficiency isn't perfect, the only positive over nuclear weapons is that the bomb won't have to weigh 5 million tons.

And given that nuclear weapons are thus going to be more efficient, I doubt any antimatter bombs would be put into use, except maybe some tested as a proof of concept. Although the idea is nice- unimaginable amount of pure energy, no radiation...

Although I doubt that nuclear weapons will ever be used again... at least till germany develops nuclear weapons...

The only reason a virus may be better than chemical/nuclear is that you can only infect a couple people and let the virus spread... although i suppose you can have tiny bombs of viruses drop in little parachutes...

It maybe as effective as chemical warfare (i.e. nerve gas) because say VX and some botulinium are both highly toxic and both very 'dirty'... in that way nuclear warfare will probably always be a quicker and more powerful approach, although it is also a bit 'dirty' when you consider the radiation mutations (even the clean more powerful non radioactive fusion H-bombs need a dirty easier to initiate fission booster)

in the case you are trying to grow crystals... (i thought you were just trying to precipitate silver)... it's very hard to say... but if only reacting with silver nitrate will give you crystals, you might as well just put the AgNO3 and nitric acid out in the sun for a couple days, let the acid evaporate... (although i'm not sure AgNO3 may decompose in light)

first time i tried to edit it, it says my ip range is blocked

i could supposedly get it unblocked but i have to use some special work issued email account... too much of a drag...

Didn't seem to work on firefox on my mac.

 

The first pic popped up but I couldn't rate it. Lines of strikethrough text everywhere as well.

Same on internet explorer on windows, for one in every couple pictures,... text says something about javascript... even if i click where the lines should be and submit, it will come back around to that picture...although I just went through the pictures again, trying to find the indian girl lakmilis is talking about, and no javascript problems...

I just gave at most 15 on a fairly decent white girl, most of them I put less than 5 also...for attractivenss (around 0 for everything else and i definetely did not want to perform oral sex on them!)

I wonder if the girls I know, if you took a close up photo of their face if they would look that bad (no offense). Maybe I just don't focus on their face...

Sherlock, I don't think this is a very highly funded project- it's done on a free webhosting site by a university student (no offense laura)

It probably wouldn't make much of a difference, it would be a bit better if you seperate the crystals first if either you don't want to produce NO2 in the second reaction, or you don't have excess copper...but NO2 will be produced in the first reaction anyways...

[ce]Ag + 2HNO3 -> H2O + AgNO3 + NO2[/ce]

[ce]2AgNO3 + Cu -> Cu(NO3)2 + 2Ag[/ce]

I would think you are trying to dissolve a piece of jewelry or something into scrap silver?

Copper nitrate is very pretty by the way.

engineer will get close enough

i agree lakmilis, not to be offensive, but i wish they had more attractive women in there

it might be something like women who don't like the way they look

maybe in real life they would look better, not in close up snapshots

but I would have put some very attractive women in there too, for comparison

some pages have broken javascript

1 in every couple pages, the number lines or whatever disappear... and so I can't answer, just press submit, and when you don't answer then the pictures come back around... so I can't see the results or whatever! Although my rating was maybe at most 15 for one of them