What's that black dust in monitors?

[Rod Speed]

Don Klipstein <don@manx.misty.com> wrote in
message news:slrnbmsrbl.9u2.don@manx.misty.com...

Rod Speed wrote
Don Klipstein <don@manx.misty.com> wrote
DarkMatter wrote
Rod Speed <rod_speed@yahoo.com> wrote

Have fun explaining why you dont get that
on the HT lead from the FBT to the tube.

I do see that stuff on a fair number of those leads.

At the end away from the FBT ? Its not surprising
that you get some one the FBT end given that the
black soot ends up on all surfaces around the FBT.

All over this lead I have seen this stuff quite a few
times - although not always. Back in the late 1970's
and early 1980's when I was not yet working, TV sets
on the curb for trash pickup were a source of many
parts that I needed, so I have enough experience.

Or with Tesla coils either.

Monitors are left on for hours on end. Tesla coils are
rarely turned on for more than a few seconds at a time

Fair point.

as they are definite FCC violations

Thats not the reason they arent left on for
anything like the sort of time monitors are.

Sometimes is,

I doubt it.

and for whatever reasons it is still relevant that most
Tesla coils don't see the runtime that monitors do.

Sure, I said that.

But other relevant items are the fact that
a few Tesla coils see lots of operating
hours and also the lack of DC component
in the electric fields that they produce.

I have operated a couple for quite a few
hours, and they did not attract that dust.

The ESD air 'purifiers' certainly do. But its not
black soot, just whats obviously visibly just dust.

I suspect DC electric fields pull that stuff
out of air more than AC electric fields do.

Probably, but the ESD air 'purifiers' are DC.

Do those have a fan

Not the ones I have used.

to bring in dust besides what the electric field would attract?
Don't they have the electric field more confined than TV sets have

Nope.

and lower voltages than TV sets have

Dunno.

so that the black sooty dust

None of that around here.

is less attracted until it gets sucked inside along with
other dust that dominates due to being sucked in by a fan?

The ones I was talking about have no fan.

(I have heard of a few older negative ion generators
that cause black dust to fly onto walls!)

Cant see how they can do that when there aint no black dust.

(And those fluorescent fixtures that had it may have
needed 50,000 hours to get a noticeable amount.)

I've never seen the same jet black soot with them.

It is not usual; I am just saying it does sometimes happen. Maybe
specific to a restaurant where steak sandwiches are made

I get a completely different fatty/greasy deposit in that situation.

or where things get fried in deep fat friers
with partially hydrogenated soybean oil,

Ditto.

maybe cigarette smoke has something to do with it.

Ditto.

It does not seem to happen with most, nearly all fluorescent fixtures
elsewhere. And it stopped happening when the fixtures in the restaurant
in question were retrofitted with high frequency electronic ballasts and
T8 lamps as opposed to the older T12 lamps. But when the fixtures in
that restaurant had magnetic ballasts and T12 lamps, the fixtures did pick
up a little of that black dust that, when wiped with a paper towel, has
that "electric-black-dust-inside-a-TV" odor.

Another bit of data: The T12->t8 retrofit in that restaurant involved
reducing the number of lamps per 2-foot-by-4-foot fixture from 4 lamps to
2 lamps. Tolerance of burnt out lamps was greatly reduced - before the
retrofit, usually at any time a couple fixtures had a failed lamp. After
the retrofit they kept up something like 100% of the lamps in uptime
98-99% of the time. And I surely envision fluorescent lamps that have
experienced "end-of-life" having a DC electric field, since usually only
one end has a failed electrode.

Possibly weak-but-not-zero airflow through the fluorescent
fixtures was also a factor. In the space above the false
ceiling there are air conditioning ducts and the supply
and return ducts are almost certainly unequally leaky.

And the ones in my house are over 30
years in use now, with no cleaning at all.

Yes, I do concede that fluorescent fixtures usually dont
attract the "electric black dust". But I have found some
that did among the many that I have tracked as a lighting nut.

 

[Don Klipstein]

In article <bklbf3$30foq$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

Don Klipstein <don@manx.misty.com> wrote in message
news:slrnbmsb0s.e24.don@manx.misty.com...
DarkMatter wrote
Rod Speed <rod_speed@yahoo.com> wrote

Have fun explaining why you dont get that
on the HT lead from the FBT to the tube.

I do see that stuff on a fair number of those leads.

At the end away from the FBT ? Its not surprising
that you get some one the FBT end given that the
black soot ends up on all surfaces around the FBT.

All over this lead I have seen this stuff quite a few times - although
not always. Back in the late 1970's and early 1980's when I was not yet
working, TV sets on the curb for trash pickup were a source of many parts
that I needed, so I have enough experience.

Or with Tesla coils either.

Monitors are left on for hours on end. Tesla coils are
rarely turned on for more than a few seconds at a time

Fair point.

as they are definite FCC violations

Thats not the reason they arent left on for
anything like the sort of time monitors are.

Sometimes is, and for whatever reasons it is still relevant that most
Tesla coils don't see the runtime that monitors do. But other relevant
items are the fact that a few Tesla coils see lots of operating hours
and also the lack of DC component in the electric fields that they
produce.

I have operated a couple for quite a few
hours, and they did not attract that dust.

The ESD air 'purifiers' certainly do. But its not
black soot, just whats obviously visibly just dust.

I suspect DC electric fields pull that stuff
out of air more than AC electric fields do.

Probably, but the ESD air 'purifiers' are DC.

Do those have a fan to bring in dust besides what the electric field
would attract? Don't they have the electric field more confined than TV
sets have and lower voltages than TV sets have so that the black sooty
dust is less attracted until it gets sucked inside along with other
dust that dominates due to being sucked in by a fan?

(I have heard of a few older negative ion generators that cause black
dust to fly onto walls!)

(And those fluorescent fixtures that had it may have
needed 50,000 hours to get a noticeable amount.)

I've never seen the same jet black soot with them.

It is not usual; I am just saying it does sometimes happen. Maybe
specific to a restaurant where steak sandwiches are made or where things
get fried in deep fat friers with partially hydrogenated soybean oil,
maybe cigarette smoke has something to do with it.
It does not seem to happen with most, nearly all fluorescent fixtures
elsewhere. And it stopped happening when the fixtures in the restaurant
in question were retrofitted with high frequency electronic ballasts and
T8 lamps as opposed to the older T12 lamps. But when the fixtures in
that restaurant had magnetic ballasts and T12 lamps, the fixtures did pick
up a little of that black dust that, when wiped with a paper towel, has
that "electric-black-dust-inside-a-TV" odor.
Another bit of data: The T12->t8 retrofit in that restaurant involved
reducing the number of lamps per 2-foot-by-4-foot fixture from 4 lamps to
2 lamps. Tolerance of burnt out lamps was greatly reduced - before the
retrofit, usually at any time a couple fixtures had a failed lamp. After
the retrofit they kept up something like 100% of the lamps in uptime
98-99% of the time. And I surely envision fluorescent lamps that have
experienced "end-of-life" having a DC electric field, since usually only
one end has a failed electrode.

Possibly weak-but-not-zero airflow through the fluorescent fixtures was
also a factor. In the space above the false ceiling there are air
conditioning ducts and the supply and return ducts are almost certainly
unequally leaky.

And the ones in my house are over 30
years in use now, with no cleaning at all.

Yes, I do concede that fluorescent fixtures usually dont attract the
"electric black dust". But I have found some that did among the many that
I have tracked as a lighting nut.

- Don Klipstein (don@misty.com)

 

[Rod Speed]

"Don Klipstein" <don@manx.misty.com> wrote in message news:slrnbmssvs.9u2.don@manx.misty.com...

In article <bkle68$30e6a$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

"Don Klipstein" <don@manx.misty.com> wrote in message news:slrnbmscvu.e24.don@manx.misty.com...
In article <bkjhps$2bcv1$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

DarkMatter <DarkMatter@thebarattheendoftheuniverse.org> wrote
in message news:gmgqmvs1rnlnnltu4086t5gcmhsh8rhq2f@4ax.com...
Rod Speed <rod_speed@yahoo.com> wrote

Dust ends up in PC regardless of moisture and or
tars and isnt anything like the color of the black stuff in
monitors. So it cant be just dust as some have claimed.

It is dust. It just happens to take on a different
color than the dust accumulations in PCs.

Dust color discrimination eh ? So its fairys sorting out the
different colored dust and putting the jet black dust into the
monitors and the other non jet black dust into the PCs and
onto the front glass tube surface of the monitors eh ?

Yup!

Not all dust particles are equally prone to carrying charges.
Different materials rank differently on the "triboelectric scale".
Maybe that black stuff is prone to carrying negative charges,

There aint no jet black soot/dust around here
except inside monitor cases adjacent to the FBT.

You just don't see it until it's concentrated enough to see.

I dont believe there is any at all, except there.

But I have entirely electrical heating.

What does that have to do with anything?

Its obviously possible to get some black
soot with some combustion systems.

and that would explain its being attracted to positively
charged surfaces, especially any with corona.

The inside of a monitor case doesnt have that.

Certainly parts of the case closer to positive
high voltage points would have a positive charge,

Not the sheet metal bits close to the FBT and
they have the same jet black soot on them.

and in a few cases much of the inside of the case can do that.

But not the metal.

And in my TV-trashpicking days, I often saw the "electric black dust" on
some but not all of the inside surface of the case, and not on the chassis
nor on most of the circuit boards. I have seen more ordinary dust on the
chassis and the lower voltage components sometimes with the "electric
black dust" in higher potential areas and nonconductive interior surfaces
that could pick up positive charge from corona on positive high voltage points.

Ever notice that cobwebs are not the same color as ordinary dust?

They're lighter colored than the dust here.

Are your webs spider webs?

Yep.

My cobwebs are formed from dust and darker and
greasier/stickier (when rubbed with fingers enough) than other dust.

Yep, but mine are lighter colored than the dust.

 

[Rod Speed]

"Don Klipstein" <don@manx.misty.com> wrote in message news:slrnbmssjm.9u2.don@manx.misty.com...

In article <bkldvn$30ek9$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

Don Klipstein <don@manx.misty.com> wrote in message
news:slrnbmscaf.e24.don@manx.misty.com...

Maybe similar to cobwebs - which are dry to the touch initially,
but turn out to be gooky if you roll them up in your hands.

The jet black soot from the inside of the monitor
case adjacent to the FBT never gets 'gooky'
no matter how much you rub it with your fingers.

Often feels a bit greasy to me when I do that!

And cobwebs are black

Not here they arent. Quite a light brown, actually.

- certainly darker than ordinary dust

Dont get that either, if anything they are lighter.

- and it does appear to me that electric fields and maybe
ionic currents play a role in their stringy formation.

What ? There are no electric fields near any of my cobwebs.

But where I live, half the time I work
up a charge when I walk on my carpet.

OK, I dont have any carpet at all.

1/3 of the time I produce a serious charge dragging
anything of cloth over anything of a different fiber.

I avoid everything except cotton and wool as much as possible.

And I believe this happens not everywhere
but a lot more than most people think,

Yeah, seen that quite a bit in a work situation, particularly
with airconditioning in winter where you take the already
quite dry air and heat it up, making it even drier.

and DC electric fields (although weaker than
in a TV set) at least here-and-there in homes
are somewhat common much of the time.

Sure.

 

[Don Klipstein]

In article <1bosmvg11srqs40qp09rk6cqn1dtd2tlfr@4ax.com>, DarkMatter wrote:

On Sun, 21 Sep 2003 22:54:20 +0000 (UTC), don@manx.misty.com (Don
Klipstein) Gave us:

The anode lead is DC, but it fluctuates. It is simply dust, AND
moist or oily particulate that has carburized after being there for so
long. TIME is the big factor here. Even after several hours, a tesla
coil wouldn't start to gather dust. It is an entirely different
animal. AC, not electrostatic as in the charged capacitor that a huge
CRT tube IS. Hehehe...

If it was ordinary dust that carbonizes from corona, then I should have
found the dust accumulated somewhere on neon signs and connections thereto
to be of the "electric black dust" form. And I don't see how fluorescent
fixtures (in the unusual but known case that they accumulate some
"electric black dust") would carbonize ordinary dust.
But no, 10-year-old dust everywhere on neon signs seems more ordinary.
Looks more likely that the "electric black dust" is something different
and is different even as soon as it's precipitated from the air. It seems
to be a clue that cobwebs are also rather black in color.

- Don Klipstein (don@misty.com)

 

[Don Klipstein]

In article <bkldvn$30ek9$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

The black soot on the inside of the monitor case near the FBT
isnt sticky/tarry/greasy at all, its completely dry to the touch.

I think tarry/greasy particles coated with soot (or something
else dry) or oxidized into something with a drier surface.

Dont buy that either, the jet black soot is too fine.

Maybe similar to cobwebs - which are dry to the touch initially,
but turn out to be gooky if you roll them up in your hands.

The jet black soot from the inside of the monitor
case adjacent to the FBT never gets 'gooky'
no matter how much you rub it with your fingers.

25 years ago I got many of my parts from TV sets tossed onto the curb,
so I ahve handled lots of that "electric black dust". I have found it to
usually be a little greasy if you squeeze it and dig into it, although it
is perfectly dry if you touch it lightly.

- Don Klipstein (don@misty.com)

 

[MC]

Argghh....
to the eternal block-list I hereby consign you all,
"Dark Matter", "Rod Speed" and "Phil Allison"

 

[Don Klipstein]

In article <bkldvn$30ek9$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

Don Klipstein <don@manx.misty.com> wrote in message
news:slrnbmscaf.e24.don@manx.misty.com...

Maybe similar to cobwebs - which are dry to the touch initially,
but turn out to be gooky if you roll them up in your hands.

The jet black soot from the inside of the monitor
case adjacent to the FBT never gets 'gooky'
no matter how much you rub it with your fingers.

Often feels a bit greasy to me when I do that!

And cobwebs are black

Not here they arent. Quite a light brown, actually.

- certainly darker than ordinary dust

Dont get that either, if anything they are lighter.

- and it does appear to me that electric fields and maybe
ionic currents play a role in their stringy formation.

What ? There are no electric fields near any of my cobwebs.

But where I live, half the time I work up a charge when I walk on my
carpet. 1/3 of the time I produce a serious charge dragging anything of
cloth over anything of a different fiber. And I believe this happens not
everywhere but a lot more than most people think, and DC electric fields
(although weaker than in a TV set) at least here-and-there in homes are
somewhat common much of the time.

- Don Klipstein (don@misty.com)

 

[Don Klipstein]

In article <bkle68$30e6a$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

"Don Klipstein" <don@manx.misty.com> wrote in message news:slrnbmscvu.e24.don@manx.misty.com...
In article <bkjhps$2bcv1$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

DarkMatter <DarkMatter@thebarattheendoftheuniverse.org> wrote
in message news:gmgqmvs1rnlnnltu4086t5gcmhsh8rhq2f@4ax.com...
Rod Speed <rod_speed@yahoo.com> wrote

Dust ends up in PC regardless of moisture and or
tars and isnt anything like the color of the black stuff in
monitors. So it cant be just dust as some have claimed.

It is dust. It just happens to take on a different
color than the dust accumulations in PCs.

Dust color discrimination eh ? So its fairys sorting out the
different colored dust and putting the jet black dust into the
monitors and the other non jet black dust into the PCs and
onto the front glass tube surface of the monitors eh ?

Yup!

Not all dust particles are equally prone to carrying charges.
Different materials rank differently on the "triboelectric scale".
Maybe that black stuff is prone to carrying negative charges,

There aint no jet black soot/dust around here
except inside monitor cases adjacent to the FBT.

You just don't see it until it's concentrated enough to see.

But I have entirely electrical heating.

What does that have to do with anything?

and that would explain its being attracted to positively
charged surfaces, especially any with corona.

The inside of a monitor case doesnt have that.

Certainly parts of the case closer to positive high voltage points would
have a positive charge, and in a few cases much of the inside of the case
can do that.
And in my TV-trashpicking days, I often saw the "electric black dust" on
some but not all of the inside surface of the case, and not on the chassis
nor on most of the circuit boards. I have seen more ordinary dust on the
chassis and the lower voltage components sometimes with the "electric
black dust" in higher potential areas and nonconductive interior surfaces
that could pick up positive charge from corona on positive high voltage
points.

Ever notice that cobwebs are not the same color as ordinary dust?

They're lighter colored than the dust here.

Are your webs spider webs? My cobwebs are formed from dust and darker
and greasier/stickier (when rubbed with fingers enough) than other dust.

- Don Klipstein (don@misty.com)

 

[Mike Harding]

On Mon, 22 Sep 2003 15:53:57 +1000, MC <mc@non.existant.place> wrote:

Argghh....
to the eternal block-list I hereby consign you all,
"Dark Matter", "Rod Speed" and "Phil Allison"

You mean you don't think it's amusing watching three
fools spending hours arguing about... dust?

Mike Harding

 

[Rob Judd]

Mike Harding wrote:

On Mon, 22 Sep 2003 15:53:57 +1000, MC <mc@non.existant.place> wrote:


Argghh....
to the eternal block-list I hereby consign you all,
"Dark Matter", "Rod Speed" and "Phil Allison"

You mean you don't think it's amusing watching three
fools spending hours arguing about... dust?

It's a mote point.

Rob

 

[Rod Speed]

Don Klipstein <don@manx.misty.com> wrote in
message news:slrnbmt65a.c3f.don@manx.misty.com...

Rod Speed wrote
Don Klipstein <don@manx.misty.com> wrote

(I have heard of a few older negative ion generators
that cause black dust to fly onto walls!)

Cant see how they can do that when there aint no black dust.

Or not visible until concentrated by those particular devices that
precipitate and concentrate such black dust into noticeable deposits?

Dont believe there is any thats invisible
when only electrical heating is used.

There may well be with other forms of heating
used, particular gas which isnt externally vented.

 

[Simon Harris]

MC <mc@non.existant.place> wrote in message
news:3F6E8E75.262F393A@non.existant.place...

Argghh....
to the eternal block-list I hereby consign you all,
"Dark Matter", "Rod Speed" and "Phil Allison"

Maybe no one actually cares what
some gutless fuckwit chooses to read ?

Block lists do actually work if you dont
announce what's in them, fuckwit.

But then you wouldnt be able to posture, would you ?

 

[Jackie]

What about me ????

I asked the original question and I still don't know !!!!!

Jackie



Mike Harding wrote:

On Mon, 22 Sep 2003 15:53:57 +1000, MC <mc@non.existant.place> wrote:


Argghh....
to the eternal block-list I hereby consign you all,
"Dark Matter", "Rod Speed" and "Phil Allison"


You mean you don't think it's amusing watching three
fools spending hours arguing about... dust?

Mike Harding

 

[Don Klipstein]

In article <bkm1c6$34d2n$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

Don Klipstein <don@manx.misty.com> wrote in
message news:slrnbmsrbl.9u2.don@manx.misty.com...

(I have heard of a few older negative ion generators
that cause black dust to fly onto walls!)

Cant see how they can do that when there aint no black dust.

Or not visible until concentrated by those particular devices that
precipitate and concentrate such black dust into noticeable deposits?

- Don Klipstein (don@misty.com)

 

[Don Klipstein]

In article <bkm1mj$35pu8$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

"Don Klipstein" <don@manx.misty.com> wrote in message news:slrnbmssvs.9u2.don@manx.misty.com...
In article <bkle68$30e6a$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

But I have entirely electrical heating.

What does that have to do with anything?

Its obviously possible to get some black
soot with some combustion systems.

But I have seen it in homes without combustion devices. Maybe it is
possible to get such black dust from neighbors or others upwind, and where
I am I certainly think the atmosphere has some soot from diesel-fueled
trucks and buses!

and that would explain its being attracted to positively
charged surfaces, especially any with corona.

The inside of a monitor case doesnt have that.

Certainly parts of the case closer to positive
high voltage points would have a positive charge,

Not the sheet metal bits close to the FBT and
they have the same jet black soot on them.

and in a few cases much of the inside of the case can do that.

But not the metal.

In my TV-trashpicking experience, the metal is not as much a target.

And in my TV-trashpicking days, I often saw the "electric black dust" on
some but not all of the inside surface of the case, and not on the chassis
nor on most of the circuit boards. I have seen more ordinary dust on the
chassis and the lower voltage components sometimes with the "electric
black dust" in higher potential areas and nonconductive interior surfaces
that could pick up positive charge from corona on positive high voltage points.

Ever notice that cobwebs are not the same color as ordinary dust?

They're lighter colored than the dust here.

Are your webs spider webs?

Yep.

That supports my assertions related to cobwebs, since I was talking
about ones that are not made by spiders. There is such a thing as cobwebs
made of nothing but dust, and apparantly guided into stringy forms by
electric fields and/or ionic currents, and these are quite common!

My cobwebs are formed from dust and darker and
greasier/stickier (when rubbed with fingers enough) than other dust.

Yep, but mine are lighter colored than the dust.

- Don Klipstein (don@misty.com)

 

[Don Klipstein]

In article <bkm5jq$34bgh$1@ID-69072.news.uni-berlin.de>, Rod Speed wrote:

Don Klipstein <don@manx.misty.com> wrote in
message news:slrnbmt65a.c3f.don@manx.misty.com...
Rod Speed wrote
Don Klipstein <don@manx.misty.com> wrote

(I have heard of a few older negative ion generators
that cause black dust to fly onto walls!)

Cant see how they can do that when there aint no black dust.

Or not visible until concentrated by those particular devices that
precipitate and concentrate such black dust into noticeable deposits?

Dont believe there is any thats invisible
when only electrical heating is used.

I sure see many thousands of diesel trucks, enough of which spew soot
into the air. And more-badly-out-of-tune cars do some of the same. Along
with enough nearby buildings that have combustion sources, including
40-plus-year-old oil-fueled heating systems within a mile from me often
upwind from me. No matter how clean my home is in terms of not adding
soot to the air in it, I have to import air from elsewhere or else the CO2
level would become unacceptable and the oxygen level would drop from my
respiration. I get black dust accumulating in my TV and my monitor in a
4th floor apartment!
Heck, "particulates" ("usually from combustion and industrial processes"
as far as I remember) is usually the Number 2 air pollutant reported in my
metropolitan area and often at levels worse than "good"!

- Don Klipstein (don@misty.com)

 

[Rod Speed]

Don Klipstein <don@manx.misty.com> wrote in
message news:slrnbmt7fi.c3f.don@manx.misty.com...

Rod Speed wrote
Don Klipstein <don@manx.misty.com> wrote
Rod Speed wrote
Don Klipstein <don@manx.misty.com> wrote

(I have heard of a few older negative ion generators
that cause black dust to fly onto walls!)

Cant see how they can do that when there aint no black dust.

Or not visible until concentrated by those particular devices that
precipitate and concentrate such black dust into noticeable deposits?

Dont believe there is any thats invisible
when only electrical heating is used.

I sure see many thousands of diesel trucks,
enough of which spew soot into the air.

You dont get much black soot inside houses from those.

And more-badly-out-of-tune cars do some of the same.

Nope. And bugger all of that ends up inside houses anyway.

Along with enough nearby buildings that have combustion
sources, including 40-plus-year-old oil-fueled heating
systems within a mile from me often upwind from me.

We dont see much of that anymore, oil fueled.

No matter how clean my home is in terms of not adding
soot to the air in it, I have to import air from elsewhere
or else the CO2 level would become unacceptable and
the oxygen level would drop from my respiration.

Doesnt mean you import much 'invisible soot'

I get black dust accumulating in my TV
and my monitor in a 4th floor apartment!

You claimed you get it everywhere, not just in the TV and monitor.

I dont buy that.

Heck, "particulates" ("usually from combustion and industrial processes"
as far as I remember) is usually the Number 2 air pollutant reported in
my metropolitan area and often at levels worse than "good"!

Yes, but that aint necessarily the jet black we are discussing.

Most smog seen with citys is actually brown, not jet black.

 

[Rod Speed]

Don Klipstein <don@manx.misty.com> wrote in
message news:slrnbmt6ra.c3f.don@manx.misty.com...

Rod Speed wrote
Don Klipstein <don@manx.misty.com> wrote
Rod Speed wrote

But I have entirely electrical heating.

What does that have to do with anything?

Its obviously possible to get some black
soot with some combustion systems.

But I have seen it in homes without combustion devices.

I doubt it with the jet black non greasy soot being discussed.

Maybe it is possible to get such black
dust from neighbors or others upwind,

I doubt it inside a house.

and where I am I certainly think the atmosphere
has some soot from diesel-fueled trucks and buses!

Bugger all of that ever gets inside houses, certainly bugger all
of that inside mine, and I have got that characteristic jet black
soot adjacent to the FBT in all monitors and nowhere else.

and that would explain its being attracted to positively
charged surfaces, especially any with corona.

The inside of a monitor case doesnt have that.

Certainly parts of the case closer to positive
high voltage points would have a positive charge,

Not the sheet metal bits close to the FBT and
they have the same jet black soot on them.

and in a few cases much of the inside of the case can do that.

But not the metal.

In my TV-trashpicking experience, the metal is not as much a target.

Its certainly got that jet black soot in all my monitors.

And in my TV-trashpicking days, I often saw the "electric black dust" on
some but not all of the inside surface of the case, and not on the chassis
nor on most of the circuit boards. I have seen more ordinary dust on the
chassis and the lower voltage components sometimes with the "electric
black dust" in higher potential areas and nonconductive interior surfaces
that could pick up positive charge from corona on positive high voltage points.

Ever notice that cobwebs are not the same color as ordinary dust?

They're lighter colored than the dust here.

Are your webs spider webs?

Yep.

That supports my assertions related to cobwebs,

Nope.

since I was talking about ones that are not made by spiders.

No such animal.

There is such a thing as cobwebs made of nothing but dust,

Nope.

and apparantly guided into stringy forms by electric
fields and/or ionic currents, and these are quite common!

Nope. No such animal.

My cobwebs are formed from dust and darker and
greasier/stickier (when rubbed with fingers enough) than other dust.

Yep, but mine are lighter colored than the dust.

 

[Rod Speed]

Jackie <noreply@bigpond.com> wrote in message
news:3F6EA11B.6010408@bigpond.com...

What about me ????

I asked the original question and I still don't know !!!!!

A Japanese would at least have the decency to disembowel itself.

Dont make a mess of the carpet.

Mike Harding wrote:
On Mon, 22 Sep 2003 15:53:57 +1000, MC <mc@non.existant.place> wrote:


Argghh....
to the eternal block-list I hereby consign you all,
"Dark Matter", "Rod Speed" and "Phil Allison"


You mean you don't think it's amusing watching three
fools spending hours arguing about... dust?

Mike Harding