Date: Mon, 25 Feb 2002 10:25:11 -0700

Author: Tim Cook

Subject: RE: Cloud chamber alcohol type?

Post:

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Thanks everyone for the good information. Apparently there was some delay in
the system so we didn't get the responses until Monday but we experimented
1st with 70% Isopropyl alcohol and got nothing. Then we were able to buy a
pint of 99% which they warned us probably had more water than that because
it came from a drum that they dispensed from over a long period of time.
That worked very nicely and was a great success.

The thought about the explosive potential is a concern. I wonder if there is
enough water vapor in the chambers drain off the charge?

Tim

> ----------
> From: Tim Cook
> Reply To: tap-l@listproc.appstate.edu
> Sent: Friday, February 22, 2002 9:08 AM
> To: 'tap-l@listproc.appstate.edu'
> Subject: Cloud chamber alcohol type?
>
> Hello all:
>
> We've got one of those Supersaturated Environments cloud chambers on order
> but wouldn't you know we have a request to use one today so we are going
> to try a quick &a mp; dirty one. A how-to page on the web recommends
> "pure(not 70%) isopropyl alcohol". To get this we'll have to get a gallon
> from our chem stores.
>
> What do others use? I'm hoping something else works also. Thanks for any
> suggestions.
>
> Tim Cook
>
> Physics & Astronomy Instructional Resource Team
> Arizona State University, Department of Physics & Astronomy
> PO Box 871504, Bldg PS Rm F470, Tempe, Arizona 85287-1504
> 480-965-4020; fax 480-965-7954; tim.cook@asu.edu
>
>

--Boundary_(ID_f50EmvhD+AmX7gV4UhfaEA)
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=0D=0A=0D=0A EAD>=0D=0A rset=3Dus-ascii">=0D=0A e Server version 5.5.2655.35">=0D=0ARE: Cloud chamber alcohol =<br> type?=0D=0A=0D=0A=0D=0A=0D=0A

0000FF" FACE=3D"Arial">Thanks everyone for the good information. Appa=
rently there was some delay in the system so we didn't get the respon=
ses until Monday but we experimented 1st with 70% Isopropyl alcohol a=
nd got not
hing. Then we were able to buy a pint of 99% which they warned us pro=
bably had more water than that because it came from a drum that they =
dispensed from over a long period of time. That worked very nicely an=
d was a great success.

=0D=0A=0D=0A

F" FACE=3D"Arial">The thought about the explosive potential is a conc=
ern. I wonder if there is enough water vapor in the chambers drain of=
f the charge?

=0D=0A=0D=0A

=3D"Arial">Tim=0D=0A

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