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my favorite grape-in-the-microwave trick (and what does it say about us as a group that there's more than one to choose from???)

-put a thin layer of oil on the bottom of your microwave--remove the rotating dish first!
-put a grape in there, and turn on the microwave
-as the grape heats up, the steam and water vapor will shoot out the stem hole, and your grape will spin and slide all over the floor of the microwave. have grape races with your friends and colleagues!

-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]]On Behalf Of Ilze Groves
Sent: Thursday, October 27, 2005 5:15 PM
To: [log in to unmask]
Subject: Re: measuring the speed of light in a microwave


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

The grape trick can be spectacular - and I've seen it ruin a microwave
oven, though can't remember the exact sequence of events beyond the
initial sparks and flashes. 


Ilze Groves
Questacon - The National Science and Technology Centre
Canberra, Australia
email: [log in to unmask]
______________________________________________


-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of William Katzman
Sent: Friday, 28 October 2005 2:11 AM
To: [log in to unmask]
Subject: Re: measuring the speed of light in a microwave


ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
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There is one danger....ruining your microwave.  Never seen it happen but
apparently they warn that they can overheat when used without anything
(or
with very little) inside them to absorb the microwaves...

Meanwhile I still like the grape experiment (putting a grape cut through
one
side but ot the skin on the other side in the microwave).  That can give
you
plasma as well.

-William

-----Original Message-----
From: jason jay stevens [mailto:[log in to unmask]] 
Sent: Wednesday, October 26, 2005 5:39 PM
Subject: Re: measuring the speed of light in a microwave

ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
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institutions.
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It takes about one second, and will freak out everyone in the lunchroom.

Of course, the metal isn't "gone."  But where is it?
And do I really want to heat up my tea after setting spark to a CD in
the
same little oven?

Anyway, great way to put those AOL discs to good use.


__
jasonJayStevens

exhibits . annArborHands-OnMuseum . [log in to unmask]
734.995.5439 x32

art . potterBelmarLabs . [log in to unmask] www.potterbelmar.org




On Oct 26, 2005, at 3:57 PM, Peter A. Anderson wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology 
> Centers Incorporated, a worldwide network of science museums and 
> related institutions.
> **********************************************************************
> *******
>
> Wayne,  I can't see any danger, really - the microwaves vaporize the 
> thin metallic layer on the CD, and it burns up in the air - a a 
> buzzing and a display of dancing blue fire.
>
> It stops quickly, when the metal is gone.
>
> It's one of the rewards of living in this confusing high tech era.
> It sort of brings things into perspective - if you like fireworks!
>
> Peter A.
>
> **********************************************************************
> *
> More information about the Informal Science Education Network and the 
> Association of Science-Technology Centers may be found at http:// 
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