[TheForge] Re: triangle bells/rebar

[john tobako]

> But I have a vague recollection from high school physics that tubes
> have weird vibration modes and harmonics.  Maybe I have to know
> exactly where the nodal point(s) of the vibration are.
> 
> Say, maybe you could analyze the triangle gongs to determine where 
> the
> least-vibrating nodal point(s) is(are).  Um, lessee: magnetize one
> just enough so that iron powder just barely kinda sorta sticks to
> it. Very light coat of white paint.  Iron powder all over.  Ring it
> and see where the iron powder falls off.  Those place are 
> vibrating,
> aren't nodes and shouldn't be used to suspend it.  Or something 
> like
> that... 
> 
> - Mike
>
check xylophone construction.  when tubes are used they have to be
supported at nodes - something like 1/4 in from each end.

john tobako

________________________________________________________________
Get your name as your email address.
Includes spam protection, 1GB storage, no ads and more
Only $1.99/ month - visit http://www.mysite.com/name today!