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If it's the consistency that works, agitators kind of make it solidify round
the blades, and that really isn't good for the machinery. I once had to
dissuade someone from doing the mixing in a cement mixer........ Needs to be
mixed fresh and then disposed of immediately afterwards. I did leave a 10m
long tank of it overnight at the London Science Museum and it was OK next
morning, but it did need a new layer of cornstarch on the top, and it wasn't
as great as it would have been fresh, but it was for a TV stunt, so OK for
the job.
IAN SIMMONS
I can't understand why people are frightened of new ideas. I'm frightened of
the old ones - John Cage
Science Centre - www.life.org.uk
Forteana - www.forteantimes.com & www.anomalist.com
Science Writing and Sound Reviews - www.nthposition.com
----- Original Message -----
From: "Luke Donev" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 15, 2011 9:22 PM
Subject: Re: oobleck run through
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
> *****************************************************************************
>
> Has anyone tried leaving a slow-speed agitator in the oobleck (like a
> paddle on a motor) to keep agitating it overnight and prevent it from
> settling out? Not sure if it's worth the effort, but it might let you
> re-use batches over a weekend.
>
> -----Original Message-----
>
> *****************************************************************************
>
> We made a test batch in a large aquarium tank about 8" deep and left it
> overnight to see if we could re-use it the next day. The issue wasn't
> evaporation, as much as separation. By morning, the Oobleck had separated
> dramatically, with about 1" of just water on top and the cornstarch packed
> densely below. Re-mixing it proved impossible.
>
> --Jeff--
>
> Jeff Rosenblatt
> Director, Science City
>
> Union Station Kansas City, Inc.
> 30 W. Pershing Rd. Suite 850
> Kansas City, MO 64108
> Office: 816-460-2218
> [log in to unmask]
>
>
>
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