From: Heidi Black (blackh@exchange.esuhsd.org)
Date: Thu Sep 23 1999 - 10:51:39 PDT
Message-ID: <37EA68A8.CF155136@exchange.esuhsd.org> Date: Thu, 23 Sep 1999 09:51:39 -0800 From: Heidi Black <blackh@exchange.esuhsd.org> Subject: Re: pinhole what IS glass
The October issue of Discover has a 2 page article that addresses this
very question. Their answer is that glass is..well, a glass. I'm no
chemist, but I enjoyed the article.
Heidi Strahm Black
Science Fair Coordinator
East Side Union High School District
San Jose, Ca
blackh@exchange.esuhsd.org
Paraluman Stice-Durkin wrote:
> Every year, when we discuss phases of matter, glass always comes up.
> In
> the past, I have gotten into the habit of discussing with students
> that
> glass actually does flow, using the example of old window panes that
> are
> thicker at the bottom. At the alumni institute this summer, I heard
> that
> there is evidence that glass does NOT flow, and that it has been
> reclassified. Does anyone have an update on this?? I heard that the
> reason old glass is thicker on the bottom is because of how it was
> blown...please advise.
>
> aloha
> paraluman
>
> ***************************
> Paraluman Stice-Durkin
> Punahou Academy
> Chemistry and AP Chemistry
> 1601 Punahou Street
> Honolulu, HI 96822
> (808) 943-3654
>
> --------------
> ------------------------------------------------------------
>
> To unsubscribe from pinhole, send an email to
> requests@exploratorium.edu
> with the words 'unsubscribe pinhole' (without the quotes) in the
> SUBJECT
> of the email.
>
> To subscribe to the digest and only get 1 combined message a day, send
> an
> email to requests@exploratorium.edu with the words 'subscribe digest
> pinhole' (without the quotes) in the SUBJECT of the email.
> ----------------------------------------------------------
> ----------------
This archive was generated by hypermail 2b29 : Thu Oct 19 2000 - 11:09:33 PDT