Date: Fri, 26 Sep 2003 09:05:44 -0400

Author: Judith Elwell

Subject: Re: Van de Graaff

Post:

--============_-1147540949==_ma============
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

When I was researching a place to get a replacement belt, I ran
across this site:

http://science.howstuffworks.com/vdg3.htm

However, I have not tried making my own belt.

Judy



>Hello tappers,
>
>
>
>Does anyone have ideas about replacement belts for the Winsco Van de
>Graaff generator? The belts can be purchased from Sargent Welch for
>about $10. The problem is these rubber belts only last from 3 to 6
>months in our science building's (we share with chemistry) caustic
>environment. Our budget (none for the moment) does not permit us to
>stock up and these replacement belts go bad on the shelf as well.
>Any ideas for homemade belts?
>
>
>
>Thanks,
>
>
>
>Brian Magness
>
>

--============_-1147540949==_ma============
Content-Type: text/html; charset="us-ascii"


Re: Van de Graaff

When I was researching a place to get a replacement belt, I ran
across this site:



http://science.howstuffworks.com/vdg3.htm



However, I have not tried making my own belt.



Judy







Hello
tappers,



size="-1"> 


Does anyone
have ideas about replacement belts for the Winsco Van de Graaff
generator? The belts can be purchased from Sargent Welch for about
$10. The problem is these rubber belts only last from 3 to 6 months in
our science building's (we share with chemistry) caustic environment.
Our budget (none for the moment) does not permit us to stock up and
these replacement belts go bad on the shelf as well. Any ideas for
homemade belts?



size="-1"> 



size="-1">Thanks,



size="-1"> 



Brian
Magness



size="-1"> 





--============_-1147540949==_ma============--
From dstille@newton.physics.uiowa.edu Fri Sep 26 06:41:19 2003
Date: Fri, 26 Sep 2003 08:24:42 -0500 (CDT)
From: Dale Stille
X-X-Sender: dstille@newton
To: tap-l@listproc.appstate.edu
Subject: Re: Van de Graaff
In-Reply-To:
Message-ID:
References: <8D98F301100827428749C00FCF9A440089CBCC@exchange.calstatela.edu>

MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
X-MailScanner-Information: Please contact the Helpdesk @ 6266 for more information
X-MailScanner-ASU-mta1: Found to be clean
X-MailScanner-SpamCheck: not spam, SpamAssassin (score=-31.9, required 7,
EMAIL_ATTRIBUTION -6.50, IN_REP_TO -3.30, QUOTED_EMAIL_TEXT -3.20,
REFERENCES -6.60, REPLY_WITH_QUOTES -6.50, USER_AGENT_PINE -5.80)
Reply-To: tap-l@listproc.appstate.edu
Sender: owner-tap-l@listproc.appstate.edu
X-Listprocessor-Version: 8.2.10/991025/16:55 -- ListProc(tm) by CREN


Judy,

Sargent-Welch still has the old ones, they just aren't listed in the
catalog but can be found on the website. Should be #WL1913Z @ $14.99.

Dale Stille
U of Iowa

On Fri, 26 Sep 2003, Judith Elwell wrote:

> I'm glad to see a message about a belt for a Van de Graaff. Please
> comment if someone knows where to get a replacement belt for a Van de
> Graaff made by American Electrostatic Company. I have an order in
> for one to Sargent-Welch, but the size isn't quite the same as the
> old one I have.
>
> Judy
>
>
>
>
> >Hello tappers,
> >
> >
> >
> >Does anyone have ideas about replacement belts for the Winsco Van de
> >Graaff generator? The belts can be purchased from Sargent Welch for
> >about $10. The problem is these rubber belts only last from 3 to 6
> >months in our science building's (we share with chemistry) caustic
> >environment. Our budget (none for the moment) does not permit us to
> >stock up and these replacement belts go bad on the shelf as well.
> >Any ideas for homemade belts?
> >
> >
> >
> >Thanks,
> >
> >
> >
> >Brian Magness
> >
> >
>
From tbauer@wellesley.edu Fri Sep 26 06:49:45 2003
Message-id:
Date: Fri, 26 Sep 2003 09:33:01 -0400
Subject: Re: Awesome EM induction demo!
To: tap-l@listproc.appstate.edu
From: "Thomas J. Bauer"
References:

In-Reply-To:
MIME-Version: 1.0
Content-type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-MailScanner-Information: Please contact the Helpdesk @ 6266 for more information
X-MailScanner-ASU-mta3: Found to be clean
X-MailScanner-SpamCheck: not spam, SpamAssassin (score=-22.9, required 7,
EMAIL_ATTRIBUTION -6.50, IN_REP_TO -3.30, REFERENCES -6.60,
REPLY_WITH_QUOTES -6.50)
Reply-To: tap-l@listproc.appstate.edu
Sender: owner-tap-l@listproc.appstate.edu
X-Listprocessor-Version: 8.2.10/991025/16:55 -- ListProc(tm) by CREN

tap-l@listproc.appstate.edu writes:
>Sammy, Zig, Matt, and Tappers all,
>
>I also did this experiment when I was giving a colloquium presentation to
>my department last monday. I had actually obtained a 1 inch thick by 1
>foot square piece of copper and cooled it for the first time for that
>talk. Dropped the magnet from a height of better than two feet. It fell
>to 3 inches above the plate and then bounced back up to 6 inches and then
>slowly dropped back to the plate while sliding sideways. Surprised the
>hell out of me, and I was prepared for it to bounce.
>Kudos to Doug Osheroff for initiating the revival of this "lost" demo.
>
>Dale Stille
>U of Iowa
>

Does the copper really need to be this thick? The induction current is not
very deep, so in theory a piece of 1/16" or thinner sheet should work just
fine, except for staying cold. I was thinking of using a 1/4" x 12" sq.
piece for weight and $ considerations.

Tom Bauer
Wellesley College
From Paul.Nord@valpo.edu Fri Sep 26 07:11:32 2003
Date: Fri, 26 Sep 2003 08:54:26 -0500
Subject: Re: Awesome EM induction demo!
Content-Type: text/plain; charset=US-ASCII; format=flowed
Mime-Version: 1.0 (Apple Message framework v552)
Cc: Paul Nord
To: tap-l@listproc.appstate.edu
From: Paul Nord
In-Reply-To:

Back