Path: ...!weretis.net!feeder8.news.weretis.net!reader5.news.weretis.net!news.solani.org!.POSTED!not-for-mail
From: Physfitfreak <physfitfreak@gmail.com>
Newsgroups: comp.os.linux.advocacy
Subject: Re: Hard Drive Failure Reprise
Date: Mon, 9 Dec 2024 17:00:41 -0600
Organization: Modern Human
Message-ID: <vj7sqp$11m4u$1@solani.org>
References: <pan$29913$3dee281c$acf48d23$708c61b7@linux.rocks>
 <vj4utg$jt3n$2@solani.org> <pan$b3e96$8733afcd$e95ebe41$da554f24@linux.rocks>
 <vj540o$jt3n$3@solani.org> <pan$b98e$91827277$67931da0$e465d520@linux.rocks>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Mon, 9 Dec 2024 23:00:41 -0000 (UTC)
Injection-Info: solani.org;
	logging-data="1104030"; mail-complaints-to="abuse@news.solani.org"
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:S4c8+5JmU5LZVsjkIrz0CrjQpTc=
X-User-ID: eJwNyMERACEIA8CWFBKQcpAx/Zdwt8+lx45JBAMUlda4YtnV9uFEeW6z94/ngb/ouFlCHwwXao2e2rhOVdp8OZEUug==
Content-Language: en-US
In-Reply-To: <pan$b98e$91827277$67931da0$e465d520@linux.rocks>
Bytes: 2619
Lines: 34

On 12/8/24 5:05 PM, Farley Flud wrote:
> If a metallic structure is grounded, it cannot develop a static
> charge.


In what you described, friction with air is continuous, so it maintains 
some degree of non-zero charge formed on the surface even if the device 
is grounded. Charge is constantly moving of course, because of the 
grounding, but the net charge at a spot on the surface won't be zero 
where friction is taking place. This attracts particles of net opposite 
charge and eventually you have a lot of dust on your mesh.

Even in the absence of a fan blowing air at it, you see dust forming 
eventually because even the temperature difference between the metal 
mesh and air causes tiny air flow around it (convection) which in turn 
begins a tiny friction that's continuous, and as cooler air replaces the 
warmed one around the mesh (or vice versa depending on which has higher 
temperature) more and more particles come in contact with the mesh.

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. So depending on what the mesh is made 
from, you can use air filter devices that can give negative or positive 
charge to the particles in your room, and choose one to create same sign 
charges on the particles that you have on your mesh, thus preventing the 
dust from getting attached to the mesh.