[Phys-l] Fwd: [tap-l] Breaking a wine glass

[Bernard Cleyet <bernardcleyet@redshift.com>]

Begin forwarded message:

> The main difficulty with performing the breaking glass with resonance
> demo reliably is proper tuning.
>
> To help overcome errors in tuning it is best to use a microphone  
> and an
> oscilloscope.  If you know what to look for with an oscilloscope it is
> possible to get very precise fine tuning at resonance.  This is
> tremendously helpful to achieve success.
>
> Another difficulty is getting a good horn driver that can withstand  
> the
> high audio output level.
>
>  - jz