[TheForge] Chimes

[Erik Gutfeldt]

Hi Mike,

Hmmm, I saw this number on the web page you pointed two earlier:
http://home.fuse.net/engineering/Chimes.htm
(bookmarked, thanks)

Any idea where that number comes from? Even fractions like 1/4 (25%) 
makes intuitive sense the way I understand the physics of standing 
waves. I poked around but didn't find anything supporting the 22.42% 
number?

any ideas?

Erik

On Sep 17, 2004, at 9:01 AM, Mike Linn wrote:

>
> The nodal points are actually 22.42 % from either end
>
>
>
> At 09:01 AM 9/17/2004, you wrote:
>> Yeah uh, ok,  but since the length of tube for a chime has to be some 
>> integral component of the wave , where are you sugesting to make the 
>> attachment ( as a fraction of the length)
>>
>> Maybe I am missing it and you have told us that, and I am just too 
>> dense this morning?
>>
>>
>> Charles
>>
>>
>> Bill Alleman wrote:
>>
>>> Larry and Pat Brown wrote on 9/17/2004, 5:04 AM:
>>>
>>> > If I remember correctly from making some wind chimes the attachment
>>> > point is about 1/4 down the tube
>>>
>>> A half-wave, like a jumprope, doesn't get you any useable nodes. One 
>>> full wave (an octave) would be end to end, with a node at the 
>>> center. Then 1.5 waves (like a triangle) divides in thirds. The next 
>>> harmonic, 2 full waves, would have nodes at the 1/4s and 1/2. 
>>> Etcetera. The length, from attachment point to ends, should be an 
>>> integral number of half-waves, and I believe that the lower the 
>>> harmonic of choice, the better the effect. Like the guitar technique 
>>> Yes used in Roundabout...
>>>
>>
>>
>>            Mike Linn
>>      Artist Blacksmith
>>          McCalla, AL
>>        AFC Webmaster
>> http://afc.abana-chapter.com
>>
>>
>> "Don't worry Chief, I can stand the torture if they can stand the 
>> screaming."
>>                                              - Maxwell Smart, Secret 
>> Agent 86
>>
>>
>> ______________________________________________________________________
>>
>>
>>
>>
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