Date: Wed Oct 14 13:19:45 2009

Author: Zani, Gerald

Subject: Re: Differentail Rotation in Stars and Galaxies

Post:

Dale,

Why use the Lycopodium powder?

Simply to improve visibility? - jz

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On Behalf Of Dale E. Stille
Sent: Wednesday, October 14, 2009 12:46 PM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] Differentail Rotation in Stars and Galaxies

JZ,

See my 8C10.35 demo which is fairly simple.
http://faraday.physics.uiowa.edu/astro/8C10.35.htm


I basically take a 4 liter beaker, ( 1 or 2 liter will work ) and place
it on a rotating table and let her spin for about 30 seconds. Stop the
table and the water continues to spin. Place a drop of food coloring
just off center and watch the spiraling. Watch with a camera from above.

Spinning the table first and then stopping it works better than spinning
up from a stop.

Dale

Zani, Gerald wrote:
> Tappers,
>
> Does anyone have a demo or movie that shows this effect? - jz
>
>
>