Re: What Are the Odds?!?

In article <[EMAIL PROTECTED]>, 
[EMAIL PROTECTED] (Mort) wrote:

> I got in to work this morning and found that overnight, one of my tanks
> bottom glass "gave out".
> 
> I didnt realise what had happened right away...
> 
> I had assumed that the bottom seal gave out so naturally I took 
> everything
> out and was going to re-seal the tank.
> 
> I was amazed when I got to the bottom and saw the tempered glass was
> shattered!

Tempered glass under stress can be shattered by vibration, I think the 
culprit is low frequency.  At least the examples I know of (none of which 
have been tanks) have been associated with things like heavy lorries going 
past.


Roger Sleet
Roger's Aquatic Pages http://www.sleet.plus.com