Vermin <void@nowhere.com> wrote in message
newsc4lmv8g0qcsokpp422cs5gqt2ipuit5lo@4ax.com...
> Jackie <noreply@bigpond.com> wrote

>> What is that fine black 'dust' one sees inside
>> monitors when the case is removed?

>> Just curious

> Cooked skin mostly (carbonised dust).

Dont believe it. Its too fine for that and the distribution
inside the outer case doesnt fit that either.

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:bke59m$n9mq$1@ID-69072.news.uni-berlin.de...
>
> Vermin <void@nowhere.com> wrote in message
> newsc4lmv8g0qcsokpp422cs5gqt2ipuit5lo@4ax.com...
> > Jackie <noreply@bigpond.com> wrote
>
> >> What is that fine black 'dust' one sees inside
> >> monitors when the case is removed?
>
> >> Just curious
>
> > Cooked skin mostly (carbonised dust).
>
> Dont believe it. Its too fine for that and the distribution
> inside the outer case doesnt fit that either.


** All the facts fit.

Electrostatically charged soot consists of very fine particles,
follows air currents and sticks to plastic and metal.





............... Phil

On Fri, 19 Sep 2003 15:47:33 +1000, "Rod Speed" <rod_speed@yahoo.com>
wrote:

>
>Vermin <void@nowhere.com> wrote in message
>newsc4lmv8g0qcsokpp422cs5gqt2ipuit5lo@4ax.com.. .
>> Jackie <noreply@bigpond.com> wrote
>
>>> What is that fine black 'dust' one sees inside
>>> monitors when the case is removed?
>
>>> Just curious
>
>> Cooked skin mostly (carbonised dust).
>
>Dont believe it. Its too fine for that and the distribution
>inside the outer case doesnt fit that either.
>

It's not caused by arcing or my Tesla coil would be covered in soot.

http://www.users.bigpond.net.au/brok...t/DSCF0015.jpg

On Fri, 19 Sep 2003 15:47:33 +1000, "Rod Speed" <rod_speed@yahoo.com>
Gave us:

>
>Vermin <void@nowhere.com> wrote in message
>newsc4lmv8g0qcsokpp422cs5gqt2ipuit5lo@4ax.com.. .
>> Jackie <noreply@bigpond.com> wrote
>
>>> What is that fine black 'dust' one sees inside
>>> monitors when the case is removed?
>
>>> Just curious
>
>> Cooked skin mostly (carbonised dust).
>
>Dont believe it. Its too fine for that and the distribution
>inside the outer case doesnt fit that either.
>


Actually, it is dust from your local region that collects any
moisture in the air after it has been attracted to, and attached to
whatever surfaces of whatever charged devices are in the monitor case.
That would be the HV supply elements, and the tube itself. Then, all
the chassis collects, because it is the return for some of the fields
present. It takes on moisture and gains color. It isn't "baked".

This is why all military CRTs had fully potted HV supplies, and an
oversized anode lead such that less corona is generated, and dust
isn't as big a factor. Next to none on a supply that has a full
faraday cage around it.

On Fri, 19 Sep 2003 16:05:17 +1000, "Phil Allison"
<philallison@optusnet.com.au> Gave us:

>
>
> ** All the facts fit.
>
> Electrostatically charged soot consists of very fine particles,
>follows air currents and sticks to plastic and metal.


It should actually read "sticks to charged surfaces". They are
usually non-conductors, such as plastic, but conductors that are
isolated from ground can gain charge, and become attractors.

Of course, electrostatically charged elements in a CRT monitor are
the huge capacitive picture tube. Quite a field surrounds them.

"DarkMatter" <DarkMatter@thebarattheendoftheuniverse.org> wrote in message
news:hu8lmv8j2onurhl1cg5u23h32l3sf3g8j3@4ax.com...
> On Fri, 19 Sep 2003 16:05:17 +1000, "Phil Allison"
> <philallison@optusnet.com.au> Gave us:
>
> >
> >
> > ** All the facts fit.
> >
> > Electrostatically charged soot consists of very fine particles,
> >follows air currents and sticks to plastic and metal.
>
>
> It should actually read "sticks to charged surfaces".


** I was alluding to the chemical reactivness of soot particles - eg
soot from a fire in a fibreglass PCB leaves dark stains on plated metal
surfaces that cannot be removed with solvents.





............ Phil

"DarkMatter" <DarkMatter@thebarattheendoftheuniverse.org> wrote in message
>
> This is why all military CRTs had fully potted HV supplies, and an
> oversized anode lead such that less corona is generated, and dust
> isn't as big a factor. Next to none on a supply that has a full
> faraday cage around it.


** That may be so unless the air is full of photocopier toner particles -
as when a busy office copier is sited next to the PCs. In the case I saw
all the insides of the monitors and the PC's PSUs with coated in the black
stuff.





............ Phil

Like the Tesla photo. Almost as impressive as this one...

http://hot-streamer.com/ross/Biggg/biggg.htm


--
Delete BOX to get my real email address
"Vermin" <void@nowhere.com> wrote in message
news:d08lmv0ftpknkh0jaje7g2r192e3gafi1a@4ax.com...
> On Fri, 19 Sep 2003 15:47:33 +1000, "Rod Speed" <rod_speed@yahoo.com>
> wrote:
>
> >
> >Vermin <void@nowhere.com> wrote in message
> >newsc4lmv8g0qcsokpp422cs5gqt2ipuit5lo@4ax.com.. .
> >> Jackie <noreply@bigpond.com> wrote
> >
> >>> What is that fine black 'dust' one sees inside
> >>> monitors when the case is removed?
> >
> >>> Just curious
> >
> >> Cooked skin mostly (carbonised dust).
> >
> >Dont believe it. Its too fine for that and the distribution
> >inside the outer case doesnt fit that either.
> >
>
> It's not caused by arcing or my Tesla coil would be covered in soot.
>
> http://www.users.bigpond.net.au/brok...t/DSCF0015.jpg
>
>

On Fri, 19 Sep 2003 17:01:37 +1000, "Phil Allison"
<philallison@optusnet.com.au> Gave us:

>
>"DarkMatter" <DarkMatter@thebarattheendoftheuniverse.org> wrote in message
>news:hu8lmv8j2onurhl1cg5u23h32l3sf3g8j3@4ax.com.. .
>> On Fri, 19 Sep 2003 16:05:17 +1000, "Phil Allison"
>> <philallison@optusnet.com.au> Gave us:
>>
>> >
>> >
>> > ** All the facts fit.
>> >
>> > Electrostatically charged soot consists of very fine particles,
>> >follows air currents and sticks to plastic and metal.
>>
>>
>> It should actually read "sticks to charged surfaces".
>
>
> ** I was alluding to the chemical reactivness of soot particles - eg
>soot from a fire in a fibreglass PCB leaves dark stains on plated metal
>surfaces that cannot be removed with solvents.
>
>
http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=pyrolysis>

On Fri, 19 Sep 2003 17:05:22 +1000, "Phil Allison"
<philallison@optusnet.com.au> Gave us:

>
>"DarkMatter" <DarkMatter@thebarattheendoftheuniverse.org> wrote in message
>>
>> This is why all military CRTs had fully potted HV supplies, and an
>> oversized anode lead such that less corona is generated, and dust
>> isn't as big a factor. Next to none on a supply that has a full
>> faraday cage around it.
>
>
> ** That may be so unless the air is full of photocopier toner particles -
>as when a busy office copier is sited next to the PCs. In the case I saw
>all the insides of the monitors and the PC's PSUs with coated in the black
>stuff.
>

Yes, and just like clean dry dust, it is a non conductive,
dielectric even material that will be attracted to any surface that
does not have a net zero charge.