ISEN-ASTC-L Archives

Informal Science Education Network

ISEN-ASTC-L@COMMUNITY.LSOFT.COM

Options: Use Forum View

Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Natasha Aristov <[log in to unmask]>
Reply To:
Informal Science Education Network <[log in to unmask]>
Date:
Mon, 11 Jan 2010 19:22:55 +0100
Content-Type:
text/plain
Parts/Attachments:
text/plain (41 lines)
ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************

Hello everyone,

Does anyone know the theories about how siphoning was 
discovered?  What were the first hoses?  It seems to me that 
intestines wouldn't work for siphoning,  but I'm a vegetarian chemist 
and have never actually had an intestine in my hand, well I guess I 
have, back in my meat-eating days, but the things they put sausages 
in don't seem stable enough for a siphon.  Were reeds really the 
first hoses/pipes?

And a related question:  how, do people think, a pump spray mechanism 
was invented/discovered?  I guess it's the same principle as the 
ground water pump.  Archimedes' screw is ingenious, but simple-minded 
in comparison, isn't it?  ( I mean one of these things: 
http://techalive.mtu.edu/meec/module06/title.htm )

Unrelated to this, but another thing I'm working on:  the shape of 
amphorae.  I can think of a number of reasons why they were made to 
not stand up by themselves, but I'm wondering if anyone's come across 
real scholarly work instead of just educated guesses.

Thanks very much for any enlightenment!

Natasha

***********************************************************************
For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.

Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.

The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.

To remove your e-mail address from the ISEN-ASTC-L list, send the
message  SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]

ATOM RSS1 RSS2