[Asterisk-Users] UPS for Asterisk

[Jay Milk]

> Why would the heads come in contact with the platters on a 
> powerfail?  The 
> arms are very rigid -- the heads only float a few thousandths 
> of an inch over 
> the platters -- something that I don't believe has anything 
> to do with the 
> platters spinning (that may *help* but I don't think the 
> heads will contact 

Search google on "Bernoulli Effect"