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Old Yesterday, 04:23 AM   #2721
Sol88
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Fulle et al. (2016) examined the dust particle material composition encountered in space. Estimating the microporosity of the dust particles and a filling factor, the material density of compacted dust particles is found to be kg/m3. This was updatet to kg/m3 (Fulle et al., 2017) which is a shift towards a higher compacted average dust material density but it covers essentially the same density range as in Fulle et al. (2016) and it fully includes the densities assumed by Pätzold et al. (2016), Kofman et al. (2015) and Herique et al. (2016).
Quote:
2000 - 3500 kg/m3.
I’ll go back quite a few posts now and dig out my estimations shall we?

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Old Yesterday, 04:42 AM   #2722
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Originally Posted by Sol88 View Post
I’ll go back quite a few posts now and dig out my estimations shall we?

What estimations? The density of 67P is ~530 kg/m3. End of story.
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Old Yesterday, 04:44 AM   #2723
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Originally Posted by Sol88 View Post
How’s irrelevant?

What’s the density of the dust from stardust and 67P?

Irrelevant, funny flocker you is.
Please tell us how it is relevant. It isn't. Not to the failed EC woo.
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Old Yesterday, 04:49 AM   #2724
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Originally Posted by jonesdave116 View Post
What estimations? The density of 67P is ~530 kg/m3. End of story.
So you agree on the dust density estimate?

My wishy washy friend?
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Old Yesterday, 04:55 AM   #2725
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Originally Posted by Sol88 View Post
So you agree on the dust density estimate?

My wishy washy friend?
Listen sunshine, I'm not the one with a failed model and nothing to replace it. I'm not the one refusing to answer questions on that failure. Your questions are irrelevant. Thousands of tonnes of ice excavated at Tempel 1. Crater too large to have been made in rock. Squillions of pieces of ice around Hartley 2. Vapour detected at all comets. No mechanism to explain that vapour. Et cetera. This thread is about the stupid, failed electric comet woo. You don't want to talk about that, so what are you doing here?
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Old Yesterday, 05:31 AM   #2726
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Settle Gretel, your living in the past with an outdated model.

Rosetta has knocked Whipple’s old model for six and out.

Every new paper tends to confirm the ELECTRIC COMET!

You struggle with the simple fact that there is an ambipolar electric field at comet 67P, the dust has the density of stony meteorites/asteroidsand is highly negatively charged and sublimation is untenable as a mechanism to emit the observed dusty jets.

Poor fella.
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"No, never electric discharges" [Tusenfem]

Dust, if you are talking about mass. Vacuum if you are talking about volume.[Jonesdave116 7/12/18]
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Old Yesterday, 05:43 AM   #2727
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Originally Posted by Sol88 View Post


Settle Gretel, your living in the past with an outdated model.

Rosetta has knocked Whipple’s old model for six and out.

Every new paper tends to confirm the ELECTRIC COMET!

You struggle with the simple fact that there is an ambipolar electric field at comet 67P, the dust has the density of stony meteorites/asteroidsand is highly negatively charged and sublimation is untenable as a mechanism to emit the observed dusty jets.

Poor fella.
You are talking utter crap. There is no electric comet model. It has been debunked. There is ice. Therefore you fail. There is no rock. Therefore you fail. There is vapour. Therefore you fail. There are no discharges, or EDM (lol). Therefore you fail. No mechanisms, no science, no evidence, no model. Therefore you fail. Still batting zero.
And ambipolar fields are irrelevant. You fail.
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Old Yesterday, 05:45 AM   #2728
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You struggle with the simple fact that there is an ambipolar electric field at comet 67P, the dust has the density of stony meteorites/asteroidsand is highly negatively charged and sublimation is untenable as a mechanism to emit the observed dusty jets.
Who said the dust is highly charged? And all those things happen at asteroids. Why are asteroids not outgassing? Answer.
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Old Yesterday, 10:48 AM   #2729
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Originally Posted by Sol88 View Post
How’s irrelevant?

What’s the density of the dust from stardust and 67P?

Irrelevant, funny flocker you is.
Maybe the problem is you can't support your own model and do you own calculations, the 'density of dust'.
I wonder how many factors that includes
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Old Yesterday, 01:13 PM   #2730
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Originally Posted by Sol88 View Post
What do we find and whats it's density?
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies
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Old Yesterday, 01:14 PM   #2731
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Originally Posted by Sol88 View Post
How’s irrelevant? ....
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies
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Old Yesterday, 01:17 PM   #2732
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Originally Posted by Sol88 View Post
I’ll go back quite a few posts now and dig out my estimations shall we?
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies

Sol88's insanity that the measured density of dust is not the measured density of dust and we need his insane lie of "estimates" !
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Old Yesterday, 01:21 PM   #2733
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Thumbs down Usual insanity and lies from Sol88

Originally Posted by Sol88 View Post
So you agree on the dust density estimate?
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies

Utterly insane lies from Sol88.
jonesdave116 wrote The density of 67P is ~530 kg/m3.. That is 6 times less than the density that Sol88 's electric comet insanity demands (density of asteroids is ~3 g/cc)
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Old Yesterday, 01:22 PM   #2734
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Originally Posted by Sol88 View Post
Settle Gretel,....
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies
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Old Yesterday, 01:34 PM   #2735
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Originally Posted by jonesdave116 View Post
Who said the dust is highly charged?
An easily answered question, jonesdave116!
Sol88 has been writing insane lies in every post so when Sol88 wrote the dust is "highly negatively charged" it is yet another insane lie.

There is no negatively charged dust. There was the detection of ice or dust grains that were negatively charged.
There were none of the insane levels of charge that Sol88's electric comet insanity demands.
The "highly negatively charged" is an insane lie because it was ice or dust grains with a single charge.

Sol88s insanity includes that Sol88 has cited the appropriate paper and it still exists to show how insane his lies are:
Negatively charged nano-grains at 67P/Churyumov-Gerasimenko (PDF)
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Old Yesterday, 01:48 PM   #2736
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Originally Posted by Sol88 View Post
....and sublimation is untenable as a mechanism to emit the observed dusty jets.
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies

A insane lie because there is no scientific literature or evidence that says this. The ejection of dust and gas in jets from sublimating ices is standard, textbook astronomy. The basic mechanism is easy enough for a child to understand but not Sol88 after 12 years of comet insanity !
The surface layers of a comet are not perfectly homogenous. Some areas will heat up more then others and the ices will sublimate more. Those areas will sink below their surroundings forming pits. We have images of these pits. The pits will generate jets and we have images of jets from pits. There are also fractures that generate jets.
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Old Yesterday, 07:00 PM   #2737
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Originally Posted by jonesdave116 View Post
Who said the dust is highly charged? And all those things happen at asteroids. Why are asteroids not outgassing? Answer.
Laakso did.

Quote:
This can be explained better by the latter model because strongly charged dust particles can stream within the rays.
Electric Fields and Cold Electrons in the Vicinity of Comet Halley

Quote:
However, even in the case of the electrostatic mechanism, some circumstantial evidence can be found. For example, 67P/C-G shows ponded deposits (Thomas et al. 2015b) that are also seen on asteroids and have been attributed to the effect of electrostatic forces (Hartzell et al. 2013).
Quote:
In summary, the simplistic model of dust production resulting from gas drag overcoming gravity is no longer tenable. However, the dominant mechanism is still unclear. While activity from “cliffs” has been observed by Rosetta (Vincent et al. 2016a;Pajolaetal.2017b), it remains difficult to prove that it dominates the emission. The relationship of the uppermost (optically visible) surface to icy material just below the surface and the means of releasing the dust component remains a subject of speculation
Quote:
The amount of electric charge collected by fluffy and sub-µ m dust particles affects their motion in comae and tails and their lifetime against electrostatic fragmentation. The Rosetta mission provided the first direct evidence for the presence of electrically charged dust particles in a coma.
Cometary Dust
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Last edited by Sol88; Yesterday at 07:10 PM.
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Old Yesterday, 07:11 PM   #2738
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Originally Posted by Reality Check View Post
Sol88's insane electric comet playbook of ignorance, delusions, idiocy (god of the gaps/false dichotomy/irrelevant mainstream citations), insults (an insane one of Michael O'Hearn), lies

A insane lie because there is no scientific literature or evidence that says this. The ejection of dust and gas in jets from sublimating ices is standard, textbook astronomy. The basic mechanism is easy enough for a child to understand but not Sol88 after 12 years of comet insanity !
The surface layers of a comet are not perfectly homogenous. Some areas will heat up more then others and the ices will sublimate more. Those areas will sink below their surroundings forming pits. We have images of these pits. The pits will generate jets and we have images of jets from pits. There are also fractures that generate jets.
You seem to have a firm understanding, reality check.
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"No, never electric discharges" [Tusenfem]

Dust, if you are talking about mass. Vacuum if you are talking about volume.[Jonesdave116 7/12/18]
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