Date: Wed Sep 26 17:46:45 2007

Author: simcha Segev

Subject: Re: Visualization fluid for electric field lines demo

Post:
Dan,

I also use castor oil but instead of hair or felt I put a small amount of
semolina that can be kept for the whole semester. All I need, as Mike wrote,
is to stir the semolina. The important thing about castor oil in an open
container is to eliminate from water (humidity) absorbing.

http://www.tau.ac.il/~simcha/Electricity/index-e.htm demo no. 8
Clicking on each example opens a larger image.

Simcha


Simcha Segev – Technical Manager
Physics Demonstration Lab
School of Physics and Astronomy
Tel Aviv University, Ramat aviv, Israel
Tel. 972-3-6408077 Fax. 972-3-6429306
E-mail: simcha@post.tau.ac.il
Web site : http://www.tau.ac.il/~simcha



-----הודעה מקורית-----
מאת: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] בשם
Daniel A Margulies
נשלח: ד 26 ספטמבר 2007 17:13
אל: tap-l@lists.ncsu.edu
נושא: [tap-l] Visualization fluid for electric field lines demo

Greetings,

Does anyone have a simple recipe for the fluid used in the elctric field
lines demo, or know where such fluid can be purchased commercially? You
can see our version at:

http://www.physics.umd.edu/lecdem/services/demos/demosj3/j3-03.htm

My predecessor mixed up the last batch and left behind neither ingredients
list nor instructions. I have tried felt shavings in castor oil, but
without much success.

dan

Dan Margulies
University of Maryland, College Park
Physics Lecture Demonstration Group
301.405.5996

---------------------------------

"Go over to the physics department and take a look at a real scientist's
laboratory here on Earth. It looks just like the space station, only
much worse."

- Some guy on the internet



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