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I have seen these and they certainly work to show what's inside but I
think a larger unit might be good. I did build a version of Faraday's
original 1831 experiment with a magnet and coil and its worked well but
I also wanted to have a true rotary device that could put out some real
power.
John B
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Jonah Cohen
Sent: Thursday, June 01, 2006 3:41 PM
To: [log in to unmask]
Subject: Re: Energy Exhibit Ideas?
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
It's kinda small, but hand-powered flashlights like this one
http://www.sciencekit.com/category.asp_Q_c_E_756015
Do make it easy to see the spinning magnet + wire coils. This one even
comes
in assemble-it-yourself form.
-Jonah
"The difference between genius and stupidity is that genius has limits."
-Albert Einstein
-----Original Message-----
From: John Bowditch [mailto:[log in to unmask]]
Sent: Thursday, June 01, 2006 3:41 PM
To: [log in to unmask]
Subject: Re: Energy Exhibit Ideas?
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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*
Hi Jonah,
The reason these are "black boxes" is that modern generators are totally
enclosed. One could section the outer case but the armatures and/or
rotors are also not at all easy to understand. My only point was to make
the inner parts of the generator--the magnets and coils of wire more
obvious.
John B
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Jonah Cohen
Sent: Thursday, June 01, 2006 10:21 AM
To: [log in to unmask]
Subject: Re: Energy Exhibit Ideas?
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
-----Original Message-----
From: John Bowditch [mailto:[log in to unmask]]
The main problem with all these units is they rarely if ever show the
interior of the generator and so the basic principles are "black-boxed"
out of the picture.
--------------------------------------
Pardon my incredible engineering ignorance here, but... are the workings
of
the generators you describe black boxed because they're literally hidden
in
an opaque box, or because there's just so much machinery layered in the
contraption that you can't see what's underneath some of the parts?
I'm no exhibits expert, so this might seem like a dumbass suggestion,
but:
if it's the former that's at issue, seems like a simple plexiglass
casing
could solve it. Or if it's the former, could a generator be sliced into
segments, so one could have the whole device, then slide out a drawer
showing the top layer and revealing what's underneath (repeat as
necessary)?
You know, the way some exhibits do with the human body.
And shame on you for for the business is booming, joke, John. The
business
at the atomic museum is so small, it can't be seen with the naked eye!
Ouch,
Jonah Cohen
Outreach & Public Programs Manager
The Children's Museum
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