From: Yvonne White (evloner@hotmail.com)
Date: Tue Oct 08 2002 - 18:57:49 PDT
From: "Yvonne White" <evloner@hotmail.com> Subject: Re: Pinhole Digest #1025 - 10/01/02 Date: Wed, 09 Oct 2002 01:57:49 +0000 Message-ID: <F93Ci6nx8dyDd3OJXsN00000318@hotmail.com>
Hello,
I am looking for approximately 40grams of sodium polyacrylate for a
laboratory I want to do soon. Sodium polyacrylate is what is used in
diapers to absorb liquids. If anyone has some laying around on your self
please contact me.
Thank you,
Yvonne L. White
San Leandro High School
>From: "Pinhole Listserv" <pinhole@exploratorium.edu>
>To: "Pinhole Listserv" <pinhole@exploratorium.edu>
>Subject: Pinhole Digest #1025 - 10/01/02
>Date: Tue, 1 Oct 2002 00:20:01 -0700
>
>Pinhole Digest #1025 - Tuesday, October 1, 2002
>
> Re: pinhole lead and plutonium
> by "Roy Mayeda" <roy_mayeda@isd743.k12.mn.us>
> Gem-O-Rama
> by "Eric Muller" <emuller@isaac.exploratorium.edu>
> tastebuds question
> by "Kevin Kinsella" <kkinsella@woodside1.woodside.k12.ca.us>
>
>
>----------------------------------------------------------------------
>
>Subject: Re: pinhole lead and plutonium
>From: "Roy Mayeda" <roy_mayeda@isd743.k12.mn.us>
>Date: 30 Sep 2002 12:14:56 -0500
>
>Saw the same figures as Neil on the accumulation of plutonium. Note: Since
>Pu-239 is produced from U-238 in reactors, its supply is finite as well.
>(Natural abundance of U-235 was given as about 0.72% of total uranium, so
>it is rather inefficient to refine it, and it makes Pu-239 production much
>more appealing.) That Pt is rather pricey compared to lead is an
>understatement! But it might lead to an interesting line of questioning:
>What would a brick made of Pt cost vs. Pb? What would the masses of those
>bricks be? (Use "standard" building bricks as a comparison.)
>
>Roy Mayeda
>
>
>
>----------------------------------------------------------------------
>
>Subject: Gem-O-Rama
>From: "Eric Muller" <emuller@isaac.exploratorium.edu>
>Date: Mon, 30 Sep 2002 14:58:13 -0700
>
>Pinholers,
>
>If anyone is interested in collecting minerals, Paul Doherty and I
>will be heading over to the City by the Brine - Trona, CA!
>
>The annual Gem-O-Rama is happening Oct. 12 -13th (Columbus Day
>weekend) at Searles Lake California (near Trona).
>
>Located only 411.4 miles away (according to Yahoo), this show will
>feature such events as:
>
>Mud Trip- Cluster & pancake hanksite, trona, borax
>Blow Hole - Hanksite, halite, borax, sulfohalite dry surface
>Pink Halite - In brine, under hard salt
>Pinnacles National Natural Landmark - Self guided, info at show
>IMC Chemical Plant Tour
>
>Hey, who could ask for anything more!
>
>For more information go to:
>http://www1.iwvisp.com/tronagemclub/FLYER.htm
>
>This is not a TI sponsored event, but we'd like to see you there.
>If you want to come, send me an email and let me know. We will try
>come up with a rendezvous location.
>
>
>--
>Eric Muller
>Exploratorium Teacher Institute
>Science Educator
>3601 Lyon St.
>San Francisco, CA 94123
>
>415-561-0386
>emuller@exploratorium.edu
>
>www.doscience.com
>
>----------------------------------------------------------------------
>
>Subject: tastebuds question
>From: "Kevin Kinsella" <kkinsella@woodside1.woodside.k12.ca.us>
>Date: Mon, 30 Sep 2002 15:57:47 -0700
>
>Two summers ago I took Karen Kalumuck's terrific class about activities
>for teaching the Human Body. In one activity about taste, I believe
>someone mentioned that the idea that different parts of our tongue are
>responsible for sensing different tastes is now considered wrong. If so,
>could someone please shed some light and/or direct me to some
>research/reference material regarding the subject.
>
>Kevin kinsella
>Woodside elementary
>
>
>----------------------------------------------------------------------
>End of Pinhole Digest
>
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