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Tyler31246 posted: 21 Aug at 12:57 am
“when you handle dry ice, be sure to wear gloves” *throws gloves away* xD
beutifulsoul2359 posted: 01 Sep at 5:54 pm
oo aaa what the heck?
QuantenMagier posted: 03 Oct at 5:53 pm
lol i first understood polynom because english is not my native lang, anyway i thought since Alexander Litwinenko was killed with it anyone knows polonium or didnt this story got over the great sea to amerika? :-/
JeffersonLab posted: 03 Oct at 6:59 pm
Of course the Litvinenko story made it over here. The element’s proper pronunciation, however, didn’t lodge itself into our brains. It was three years ago, after all.
adcurtin posted: 13 Oct at 11:36 pm
My local grocery store carries 99% isopropyl alcohol, I don’t think it would be too hard to find at a drugstore.
gork42 posted: 14 Oct at 8:48 am
It’s true that some places do carry 99% isopropanol, but in many places even finding the 91% can be tough.
There is a readily available alternative, however. You can get Iso-HEET (the red bottle) at most auto parts places. It’s 99% isopropanol. It’s not technically “lab grade” though and does have other contaminants (for instance it leaves soot when it burns) so be aware of this if it will be a problem for your application. For a cloud chamber it should be fine.
JeffersonLab posted: 14 Oct at 11:25 am
Good tip. Thanks for that.
adheeb posted: 05 Nov at 10:40 pm
what type of radiation source will we need if we want to analyze or see muons in the cloud chamber?
JeffersonLab posted: 06 Nov at 11:59 am
I’m going to have to talk with a couple of people before I can give you a reasonable answer. Give me a few days…
Pimpmastahanhduece posted: 13 Nov at 7:14 am
hey, i have a tritium light source which uses phospheresence to make a green beacon. will this provide enough high speed electrons to catch in a cloud chamber?
JeffersonLab posted: 13 Nov at 9:52 am
It’s hard to say without knowing the activity of your sign. We have a lantern mantle that our Geiger counter loves, but doesn’t do anything in the cloud chamber.
Give it a try and let us know what happens!
petwalk123 posted: 14 Nov at 7:47 pm
what is the radiation source?
laser pen?
petwalk123 posted: 14 Nov at 7:53 pm
how do u get if from a vender?
lol
JeffersonLab posted: 14 Nov at 9:01 pm
Lead-210.
JeffersonLab posted: 14 Nov at 9:02 pm
The usual way. You place an order and pay for it, then they ship it to you.
ScrewAttackChina posted: 04 Dec at 8:28 pm
@adheeb you can use Americium 241, just rip it out of a fire alarm
thedoors781 posted: 08 Dec at 11:00 am
:13 Hey! LOL
dudegutarman12 posted: 10 Dec at 12:20 am
couldn’t you just boil the isopropyl (sp?) alcohol & water solution to make it closer to 100% I’m assuming that the boiling point of water is lower here.
JeffersonLab posted: 10 Dec at 8:12 am
You could, but you would still need to condense the alcohol vapor again. If you happen to have a fractionating column you could give it a whirl. Don’t know if the isopropanol/water mixture forms an azeotrope or not, so it may be more complicated than this.
JeffersonLab posted: 14 Dec at 7:40 pm
Radioactive sources don’t have the energy to produce muons. You need an accelerator or need to get lucky with cosmic rays.
Envergure posted: 12 Jan at 5:40 pm
FYI it’s “polonium,” not “penolium,” lol
Why don’t beta emissions create trails?
JeffersonLab posted: 12 Jan at 10:50 pm
The betas do create trails, but they are much more difficult to see. They have half of the charge of alpha particles, so they aren’t as effective at ionizing the air. They are also ~7200 times less massive, so they travel much faster. As a result, their trails aren’t as obvious as those created by alpha particles. In reviewing the footage, I see two tracks that are good beta candidates.
Snopphooy posted: 17 Jan at 5:02 am
haha why did you toss away your gloves man!?
Snopphooy posted: 17 Jan at 5:03 am
haha 1.17-1.19 xD ur face man!! priceless
JeffersonLab posted: 17 Jan at 8:55 am
We weren’t going to handle the dry ice, so we didn’t really need the gloves. The table was already crowded enough, so getting rid of them seemed to be the right thing to do.