Date: Tue, 27 Mar 2012 11:52:49

Author: --- John Welch

Subject: Re: cotton cloth for electrostatics

Post:








That's pretty interesting. "My" acrylic definitely makes a negative
charge, which is what I would expect from its position on the
triboelectric series: It's much farther toward the negative end than
cotton. It's close to PVC. Glass is on the positive end. I wonder if
the rods you're using are acetate or nylon, which are on the positive
end of the series.
-John

Rueckner, Wolfgang wrote:

not my acrylic-- Wolfgang



On Mar 26, 2012, at 6:45 PM, John Welch wrote:



Acrylic gets a higher charge than glass, but it gets a negative charge with cotton, just like PVC.
-John

Rueckner, Wolfgang wrote:


Acrylic (a.k.a. plexiglass) is even better than glass. You can get negative charges by rubbing a cotton t-shirt on a PVC rod and positive charges by rubbing the same shirt on an acrylic rod. -- Wolfgang




On Mar 22, 2012, at 7:46 PM, John Welch wrote:




I just looked at a triboelectric series chart, noticed that cotton is
right in the middle, and tried it with both PVC and glass rods. It works
about the same as wool and PVC and it works tons better than silk for
the glass. Now I don't need to bother with silk and wool, which are
harder to obtain or wash. Just sharing.

--
******************************
John Welch

Cabrillo College Physics Dept.








--
******************************
John Welch

Cabrillo College Physics Dept.








--
******************************
John Welch

Cabrillo College Physics Dept.




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