ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************

Dee

If you build a suismograph, build one that will really work. I suggest 
building a long period style which is insensitive to vistors but 
sensitive to distant eqrthquakes. I built one for the Science Centre in 
Wollongong which records distant earthquakes well even though it sits on 
the exhibit floor in an acrylic box. Visitor noise, wind noise on the 
building and  the effects of large waves on the nearby beach are all 
noticeable but they don't mask significant eqarthquakes. Although 
Australia is a very 'quiet' continent we record eathquakes from New 
Zealand, Indonesia etc. Recently for example many visitors came to look 
our the recording of the Tsunami earthquake. From our site this 
earthquake was 'off scale'.

Glen



Dee Davison wrote:

>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>Apologies for the cross-posting
>
>Our Education Service wishes to purchase the following items that we think
>we should be able to 'buy off the shelf'. 
>
>We would be very grateful for details of suppliers (with contact names &
>details if possible), preferably within the UK, who could provide the
>following:
>1.	Table-top Bernoulli Blower
>2.	Plasma Sphere
>3.	Orb
>4.	Whirlwind
>5.	Van de Graff generator
>6.	Earthquake table, preferably showing the 3 planes of movement.
>7.	Pangaea Puzzle
>8.	Mini-seismograph (not a computer-based one like we have in our
>introductory gallery but a representation of the 'real thing'!)
>
>Harry White at Techniquest has already very kindly provided some
>suggestions, including Kent Recorders in London as a potential supplier for
>a mini-seismograph. Does anyone know whether they are still in existence and
>if so, do you have contact details?
>
>Huge thanks
>
>
>Dee Davison
>Education Manager
>Dynamic Earth Enterprises Ltd
>Holyrood Road
>EDINBURGH
>EH8 8AS
>
>Direct Dial: 0131 523 1231
>E-Mail: [log in to unmask]
>t: +44 (0)131 550 7800
>f: +44 (0)131 550 7801
>e - [log in to unmask]
>w - www.dynamicearth.co.uk
>
>Part-time hours (February - April 2005): 9.30am-4.30pm, Monday - Friday
>
>Pre-historic, volcanic, tropic, antarctic, fantastic!
>Explore the extremes of Our Dynamic Earth!
>
>This message is sent in confidence for the addressee only.  The contents are
>not to be disclosed to anyone other than the addressee.  Unauthorised
>recipients are requested to preserve this confidentiality and to advise the
>sender immediately of any error in transmission.  Opinions, conclusions and
>other information in this message that do not relate to the official
>business of the Company shall be understood as neither given nor endorsed by
>it.
>
>
>***********************************************************************
>More information about the Informal Science Education Network and the
>Association of Science-Technology Centers may be found at http://www.astc.org.
>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]
>  
>

***********************************************************************
More information about the Informal Science Education Network and the
Association of Science-Technology Centers may be found at http://www.astc.org.
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]