Re: Hard Drive Failure Reprise

On Mon, 9 Dec 2024 17:00:41 -0600, Physfitfreak wrote:

 
The charge on a mesh formed by continuous friction with air is more
likely positive if the mesh is metal or glass, and likely negative if
the mesh is plastic or rubber.
>

No.

Trucks can develop static charges when moving down the highway
at high speed but they used to install chains that dragged on the
ground to dissipate the charge.  Chains are no longer used because
truck tires are made to be conductive and will dissipate any
charge.

A grounded heat sink cannot develop a static charge.

Here is a post on reddit which describes the boundary layer
effects:

https://www.reddit.com/r/askscience/comments/3hcd6s/how_does_a_constantlyrunning_fan_collect_dust/

This is an excellent description and one of the best that I
have seen.

The boundary layer can be very significant.  It's why they
add "dimples" to golf balls.



--
Systemd: solving all the problems that you never knew you had.