Chladni plate video

http://www.wfu.edu/Academic-departments/Physics/demolabs/demos/avimov/waves=
/chladni_plates/resonance_square.MPG

This is really something! Take a look. /Ö

WOW! I had a little trouble with the link- heres a tinyurl version:

http://tinyurl.com/koaq

Reminds me to be on the lookout for a second hand copy of "Cymatics" by Hans
Jenny.

thanks Mats

Dante

>

NICE

--- In metatuning@yahoogroups.com, "Dante Rosati"
<dante.interport@r...> wrote:
> WOW! I had a little trouble with the link- heres a tinyurl version:
>
> http://tinyurl.com/koaq
>
> Reminds me to be on the lookout for a second hand copy
of "Cymatics" by Hans
> Jenny.
>
> thanks Mats
>
> Dante
>
> >

--- In metatuning@yahoogroups.com, Mats Öljare <oljare@h...> wrote:
> This is really something! Take a look. /Ö

Gad, what a waste of perfectly good cocaine! :)

But seriously, I've used a similar procedure for years: sprinkle a little s=
alt aproximately 2/5 of the way in from the end of a marimba bar blank, tap =
lightly, and it will form a line across the bar at the nodal point. This is =
where you drill for the hole that the suspension string passes through.

Thanks, Mats...

Cheers,
Jon

what is it as i did not want to spend an hour downloading it!

Paul Erlich wrote:

> NICE
>
> --- In metatuning@yahoogroups.com, "Dante Rosati"
> <dante.interport@r...> wrote:
> > WOW! I had a little trouble with the link- heres a tinyurl version:
> >
> > http://tinyurl.com/koaq
> >
> > Reminds me to be on the lookout for a second hand copy
> of "Cymatics" by Hans
> > Jenny.
> >
> > thanks Mats
> >
> > Dante
> >
> > >
>
>
> Meta Tuning meta-info:
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-- -Kraig Grady
North American Embassy of Anaphoria Island
http://www.anaphoria.com
The Wandering Medicine Show
KXLU 88.9 FM WED 8-9PM PST

--- In metatuning@yahoogroups.com, kraig grady <kraiggrady@a...> wrote:
> what is it as i did not want to spend an hour downloading it!

A square plate, probably metal, that is set into vibration with a frequency that gradually ascends. On the surface is sprinkled a white substance (sand, salt, crushed moon rocks, who knows...) and when the plate hits certain resonant frequencies the surface matter forms patterns.

I just saved you some time. I downloaded mine while I was out trying to uninstall a broken washing machine... :(

Cheers,
Jon

I like it when you do this and the line runs diagonally, which wood will do

Jon Szanto wrote:

> --- In metatuning@yahoogroups.com, Mats �ljare <oljare@h...> wrote:
> > This is really something! Take a look. /�
>
> Gad, what a waste of perfectly good cocaine! :)
>
> But seriously, I've used a similar procedure for years: sprinkle a little s=
>
> alt aproximately 2/5 of the way in from the end of a marimba bar blank, tap =
>
> lightly, and it will form a line across the bar at the nodal point. This is =
>
> where you drill for the hole that the suspension string passes through.
>
> Thanks, Mats...
>
> Cheers,
> Jon
>
>
> Meta Tuning meta-info:
>
> To unsubscribe, send an email to:
> metatuning-unsubscribe@yahoogroups.com
>
> Web page is http://groups.yahoo.com/groups/metatuning/
>
> To post to the list, send to
> metatuning@yahoogroups.com
>
> You don't have to be a member to post.
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

-- -Kraig Grady
North American Embassy of Anaphoria Island
http://www.anaphoria.com
The Wandering Medicine Show
KXLU 88.9 FM WED 8-9PM PST

there is a sound artist Damien Romero up here who does wuch things with metal plates over speakers which he cranks out loud volume and you end up with a picture at the end. anomolous Records used to put these pictures up from time to time!

Jon Szanto wrote:

> --- In metatuning@yahoogroups.com, kraig grady <kraiggrady@a...> wrote:
> > what is it as i did not want to spend an hour downloading it!
>
> A square plate, probably metal, that is set into vibration with a frequency that gradually ascends. On the surface is sprinkled a white substance (sand, salt, crushed moon rocks, who knows...) and when the plate hits certain resonant frequencies the surface matter forms patterns.
>
> I just saved you some time. I downloaded mine while I was out trying to uninstall a broken washing machine... :(
>
> Cheers,
> Jon
>
>
> Meta Tuning meta-info:
>
> To unsubscribe, send an email to:
> metatuning-unsubscribe@yahoogroups.com
>
> Web page is http://groups.yahoo.com/groups/metatuning/
>
> To post to the list, send to
> metatuning@yahoogroups.com
>
> You don't have to be a member to post.
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

-- -Kraig Grady
North American Embassy of Anaphoria Island
http://www.anaphoria.com
The Wandering Medicine Show
KXLU 88.9 FM WED 8-9PM PST

What i wonder is if there is a way to mathematically define, and
predict the shape of nodal patterns? I guess that the plate itself is
inharmonic, and that one of a slightly different shape or
thickness-perhaps even material, would also have different nodal
patterns. /Ö

> -----Original Message-----
> From: Mats �ljare [mailto:oljare@...]
> Sent: Thursday, August 21, 2003 12:57 PM
> To: metatuning@yahoogroups.com
> Subject: [metatuning] Re: Chladni plate video
>
>
>
> What i wonder is if there is a way to mathematically
> define, and predict the shape of nodal patterns? I guess
> that the plate itself is inharmonic, and that one of a
> slightly different shape or thickness-perhaps even
> material, would also have different nodal patterns. /�

i saw exactly the same kind of presentation at the
Galleria dell'Accademia in Florence, Italy, in 2001.

i went there to see Michelangelo's _David_, but i
had the good luck catch an exhibit they had on
"musical science", with such artefacts as Helmholtz's
sirens, Maelzel's metronomes, etc.

the resonating "salt on the dish" was part of that
exhibit, outdoors in the courtyard. The sirens and
metronomes and such were inside in glass cases, but
the stuff they had set up outside was a kind of
"please touch" deal. so for this particular exhibit,
you got to pour some salt on the copper dish, then
use a violin bow to create the sounds, IIRC, by scraping
the bow across the dish itself ... or perhaps there
was a string set up near the dish. i don't remember.
what i do remember is that it was very cool. :)

-monz

"Cymatics" is back in print!

http://www.cymaticsource.com/index.html

--- In metatuning@yahoogroups.com, Mats Öljare <oljare@h...> wrote:
>
> What i wonder is if there is a way to mathematically define, and
> predict the shape of nodal patterns?

yup, they're the eigenfunctions of the plate's dynamics.

see

http://icg.harvard.edu/~phys15c/lectures/Lect13.pdf

and

http://www.nhn.ou.edu/~johnson/Education/Juniorlab/Presentations/Chlad
ni_F2001.ppt#3