Date: Fri, 08 Aug 2003 10:29:02 -0600

Author: Jerry DiMarco

Subject: Re: Gas Pains

Post:

As it was explained to me, the pressure testing has to be done once
every 5 years. And I think they either stamp the test date on the cylinder
or mark it some other way. So far the price for a refill here remains
reasonable, ~$10 for a "15 pounder". But if it goes up, I know the local
beverage bottler would be able to fill it on the spot for less money...

Jerry


At 10:09 AM8/8/2003, you wrote:
>Sam,
>
>Maybe that's it: in the past they haven't done the pressure test. Is there
>any reason they should? I'll see if I can get them to fill it without the
>test. Otherwise $20 bucks a demo is a bit steep (I get about two uses out of
>the 35 lb. cylinders)
>
>Cliff
>
>----- Original Message -----
>From: "Sam Sampere"
>To:
>Sent: Friday, August 08, 2003 10:51 AM
>Subject: Re: Gas Pains
>
>
> > I just had mine filled for the same price as last year. I think for
> > $45, you get a fill and a pressure test.
> >
> > sam
> >
> > Cliff Bettis wrote:
> >
> > >Hi All,
> > >
> > >I am getting ready for the Fall Semester and was about to have my CO2
> > >cylinders recharged and found the supplier now wants $45 a cylinder. I am
> > >looking for another supplier but I was wondering is anyone else having
>this
> > >problem?
> > >
> > >Cliff
> > >
> > >


<><><><><><><><><><><><><><><><><><><><><><><><><><><><><>

Jerry DiMarco
Manager of Lecture Demonstrations and Instructional Labs
Montana State Univ., Physics Dept.
Bozeman, MT

Our Motto: "There's a demo in there somewhere."
From sampere@physics.syr.edu Fri Aug 8 12:31:54 2003
Message-ID: <3F33D08F.5090802@physics.syr.edu>
Date: Fri, 08 Aug 2003 12:32:15 -0400
From: Sam Sampere
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To: tap-l@listproc.appstate.edu
Subject: Re: Gas Pains
References: <00c601c35dc3$f9ae2010$96245d81@lecturedemo> <3F33C717.4030200@physics.syr.edu> <00d701c35dc7$6f0d17f0$96245d81@lecturedemo>
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Cliff,

In NYS, our tanks need to tested every 10 years. So it's the law that
determines when they need to be tested. I'd argue with them and see
what's up.

Sam

Cliff Bettis wrote:

>Sam,
>
>Maybe that's it: in the past they haven't done the pressure test. Is there
>any reason they should? I'll see if I can get them to fill it without the
>test. Otherwise $20 bucks a demo is a bit steep (I get about two uses out of
>the 35 lb. cylinders)
>
>Cliff
>
>----- Original Message -----
>From: "Sam Sampere"
>To:
>Sent: Friday, August 08, 2003 10:51 AM
>Subject: Re: Gas Pains
>
>
>
>
>>I just had mine filled for the same price as last year. I think for
>>$45, you get a fill and a pressure test.
>>
>>sam
>>
>>Cliff Bettis wrote:
>>
>>
>>
>>>Hi All,
>>>
>>>I am getting ready for the Fall Semester and was about to have my CO2
>>>cylinders recharged and found the supplier now wants $45 a cylinder. I am
>>>looking for another supplier but I was wondering is anyone else having
>>>
>>>
>this
>
>
>>>problem?
>>>
>>>Cliff
>>>
>>>
>>>
>>>

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Cliff,



In NYS, our tanks need to tested every 10 years.  So it's the law that
determines when they need to be tested.  I'd argue with them and see
what's up.



Sam



Cliff Bettis wrote:

cite="mid00d701c35dc7$6f0d17f0$96245d81@lecturedemo">
Sam,

Maybe that's it: in the past they haven't done the pressure test. Is there
any reason they should? I'll see if I can get them to fill it without the
test. Otherwise $20 bucks a demo is a bit steep (I get about two uses out of
the 35 lb. cylinders)

Cliff

----- Original Message -----
From: "Sam Sampere" <sampere@physics.syr.edu>
To: <tap-l@listproc.appstate.edu>
Sent: Friday, August 08, 2003 10:51 AM
Subject: Re: Gas Pains




I just had mine filled for the same price as last year.  I think for
$45, you get a fill and a pressure test.

sam

Cliff Bettis wrote:



Hi All,

I am getting ready for the Fall Semester and was about to have my CO2
cylinders recharged and found the supplier now wants $45 a cylinder. I am
looking for another supplier but I was wondering is anyone else having



this



problem?

Cliff









--------------020006010601020209040906--
From urs.lauterburg@phim.unibe.ch Fri Aug 8 12:37:45 2003
Date: Fri, 08 Aug 2003 11:39:14 -0500
From: Urs Lauterburg
Subject: Re: glass RGB filter set
In-reply-to:
To: tap-l@listproc.appstate.edu
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Dan,

The company who makes them still exists in Germany and is specialized in making
these special, fancy filters with expensive characteristics. You may check:

http://www.seibt.com/premium/goettinger/

The numbers may refer to wavelengths or cutoff frequencies. You may send them a
mail and I am sure they help you. Hold on to those filters, they could be good
stuff. You probably did not find the company because you have to search for
''Göttinger'' and not ''Gottinger''. ''Farbfilter'' says just color filter in
German.

I hope this helps

Urs


Quoting Stanley A Dodds :

> You might take a look at Edmund Industrial Optics,
> www.edmundoptics.com. They list both dichroic and plastic RGB filters
> at reasonable prices. Other optical suppliers probably have similar
> products.
>
> Theatrical lighting gels, available from a local supplier, might work
> if you sandwiched them in glass for protection. Rosco publishes
> transmission curves on their materials, so you pick what you want.
>
> Stan
>
> On Thu, 7 Aug 2003, Daniel A Margulies wrote:
>
> > Greetings!
> >
> > I am once again laboring under the curse of the lecture demo guy: I need
> > to replace a 40-year old piece of equipment and don't know where to find
> > it! The object(s) in questoin is a set of square red, green, and blue
> > glass slides, about 3 inches on a side. They are labeled "Gottinger
> > Farbfilter" and numbered 108, 333, and 633. A google search returns no
> > useful results.
> >
> > Does anyone out there in demo land know where I could score a set of these
> > or their equivalent? You can see what we do with them at:
> >
> > http://www.physics.umd.edu/lecdem/services/demos/demosn3/n3-21.htm
> >
> > Thanks for anay and all assistance.
> >
> > Dan Margulies
> > University of Maryland, College Park
> > Physics Lecture Demonstration
> > 301.405.5995
> >
> > --------------------------
> > "Be heard, not herd."
> >
> >
>
>


--
========================================
Urs Lauterburg
University of Berne
urs.lauterburg@phim.unibe.ch

--------------------------------------------------
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From kksecres@owu.edu Fri Aug 8 12:45:11 2003
Message-ID: <011101c35dcc$a5b8a940$a7291ec6@kksecres>
From: "Kail Secrest"
To:
Subject: cleaning table tops
Date: Fri, 8 Aug 2003 12:46:42 -0400
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Hello everyone!

We would like to clean our old table tops that are covered with 35 years =
worth of oil from hands. We have those older tables that are dark green =
and very heavy, but
they are not composed of stone or epoxy. Does anyone still have these =
and have any ideas how to clean them? So far we have tried Soft Scrub =
and Windex with a plastic foam-like scrubbing pad, but it has done =
little.

Any help would be appreciated!

Thanks,

Kail Secrest
Ohio Wesleyan University-Physics Dept.
Delaware, Oh 43015
740.368.3775

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charset=3Diso-8859-1">




Hello everyone!

 

We would like to clean our old table =
tops that are=20
covered with 35 years worth of oil from hands. We have those older =
tables that=20
are dark green and very heavy, but

 they are not composed of stone or =
epoxy. Does=20
anyone still have these and have any ideas how to clean them? So far we =
have=20
tried Soft Scrub and Windex with a plastic foam-like scrubbing pad, but =
it has=20
done little.

 

Any help would be =
appreciated!

 

Thanks,

 

Kail Secrest
Ohio Wesleyan =
University-Physics=20
Dept.
Delaware, Oh  43015
740.368.3775

 


------=_NextPart_000_010E_01C35DAB.1E8A5980--
From cablem@wfu.edu Fri Aug 8 12:58:52 2003
Message-ID: <3F33D725.6050306@wfu.edu>
Date: Fri, 08 Aug 2003 13:00:21 -0400
From: Machele Cable
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Subject: Re: Light Bulb Source
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A convert!!!! We LOVE those! hehehe...

Thanks for the link...I've added it to next year's version of the
Resource CD.

Chele



Matt Lowry wrote:

>Howdy all,
>
>I'm new to the TAP-L list, having been "recruited" by Zig Peacock and
>the rest of the PIRA gang at this year's AAPT meeting in Madison.
>
>Anyway, one of the PIRA folks told me to pass on this useful bit of
>info. I accidentally stumbled onto a source for light bulbs, seemingly
>any kind of bulb you could imagine. They're called Top Bulb, and their
>address is
>
>http://www.topbulb.com
>
>Anyway, I figured I would pass that on, for whatever it's worth.
>
>Cheers,
>
>Matt Lowry
>Lake Forest High School
>Lake Forest, IL
>
>
>
>
>

--
~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~
Machele Cable Lab Manager Physics WFU
Phone: (336) 758-5532 Fax: (336) 758-6142
~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~
Friends are the Bacon Bits in the salad bowl of life.
~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~
There's a thin woman inside of me trying to get out,
but I can usually shut her up with some chocolate!


From Ayars@mailaps.org Fri Aug 8 13:03:35 2003
Date: Fri, 8 Aug 2003 10:05:06 -0700
Subject: Re: cleaning table tops
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From: Eric Ayars
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