Date: Sun, 20 Feb 2011 20:13:30

Author: Paul Doherty

Subject: Re: convection

Post:

Shampoo companies change the formulations twice a year at least.
Just so they can say "new" on the label.
Look for Glycerol Stearate on the contents.

We use it as flowvis solution mixed 1/10 with water in the heated pie pan convection visualization experiments.

Paul D



On Feb 20, 2011, at 7:02 PM, Anthony Lapinski wrote:

> Are there shampoos that are made with this sort of thing? Anyone know of
> particular brands?
>
>
> tap-l@lists.ncsu.edu writes:
>> use Rheoscopic Fluid for flow visualization Great stuff!! available
>> from www.novostar.com --- Wolfgang
>>
>>
>>
>> On Feb 17, 2011, at 4:22 PM, Anthony Lapinski wrote:
>>
>>> I am looking for an easy way to show convection in water. In the past I
>>> put a beaker of water halfway on a hot plate. Turn it on and maybe 10
>>> minutes later add a drop of food coloring. This is hit or miss depending
>>> on the amount of water, when the heat is turned on, etc. Plus the drops
>>> sinks slowly.
>>>
>>> Was thinking about using "heavy" particles that are insoluble in water
>>> (e.g., sulfur, flour, etc.) and just heat the entire beaker. Does anyone
>>> have good ideas for this?
>>>
>>
>>
>
>



From tap-l-owner@lists.ncsu.edu Mon Feb 21 02:28:00 2011

Back