Reality Check
Penultimate Amazing
better stated in my next post
Last edited:
ROFLMAO.
Low porosity equals high density. Low strength equals brittle.
As in a ROCKY BODY.
ROFLMAO
Debating this group of mental midgets is just a waste of time.

Hi all. First post here. What fun, mind if I jump in?
First...EDM. EDM is the erosion or etching of an electrode. It could be a rapid, dramatic process, or a slow, steady process. Spark machining is used on very hard materials in industrial manufacturing processes. The slow erosion of the electrodes in a neon sign is a slower, less obvious form of EDM. We could say coronal discharge etching, but the electro-static potential may, at times, reach the threshold for arcing. We say EDM because there are multiple discharge levels occurring on comets, from electrostatic cleaning of dust, coronal discharge erosion, "magnetic vortex" etching, and possibly, infrequent arc machining....
Spark machining is a specific, controlled manufacturing process that utilizes the physics of electrode erosion to machine hard materials and is just one type of discharge within the category of EDM.
cadm.zut.edu.pl/pub/prawie%20wszystko%20o%20edm%20(ang).pdf
Four main types of steady or quasi-steady processes exist:
• the Townsend’s dark discharge, characterized by a very weak current (∼ 10−8 A);
• the glow discharge, widely used in many industrial processes, operating at low current (∼ 10−2 A), fairly high voltage (∼ 1 kV) and low pressure (∼ mbar). The glow plasma is weakly ionized and in a non-equilibrium state, and is visible as a uniform glowing column. As in the Townsend’s discharge, electrons are emitted by ion impacts on the cold cathode;
• the corona discharge, also at low current (∼ 10−6 A) but at atmospheric pressure. Corona discharges develop locally (typically around sharp ends of wires) in strongly non-uniform electric field;
• the arc discharge, characterized by high current (∼ 100 A), low voltage (∼ 10 V) and a bright light emission. The arc discharge differs from the glow discharge in the electron emission mechanism. In arcs, electrons are emitted by thermionic processes, due to the heating of the cathode. The plasma of high pressure arcs can beconsidered to be in a state of thermodynamic equilibrium.
Then there is figure 2.1 and solreys quote mining.Chapter 2
EDM plasmas : Background
Although EDM discharges take place in a dielectric liquid, the first section of this chapter will deal with discharges in gases. They have been extensively studied [47–49], and have common features with discharges in liquids. After that, a brief review about the specific characteristics of discharges in liquids will be given in the second section. Finally, other plasmas similar to the EDM plasmas are presented in the last section.
2.1 Discharges in gases
2.1.1 Spark, arc, glow & co.
Depending on the gas pressure, the electrode gap and the electrode configuration, several discharge regimes can be distinguished. They can be classified according to their current voltage characteristics, as shown in figure 2.1.
(emphasis added)
ROFLMAO.
Low porosity equals high density. Low strength equals brittle.
As in a ROCKY BODY.
ROFLMAO
Debating this group of mental midgets is just a waste of time.
Since he did not understand the abstract it was the only thing that he could think of doingInteresting, you don't actually explain yourself and go straight for the ad hom.
(solrey's bolding retained)Only impacts into materials of extremely low strength (< 100 Pa) and of low porousity can create such large crater ejecta masses. Only impacts into materials of extremely low strength (< 100 Pa) and of low porousity can create such large crater ejecta masses. Since comets are expected to be more porous and of somewhat higher strength (at the spatial scale of the impact), we investigate alternative possibilities to explain the large amount of observed dust and gas.
The conclusion in the paper is that the porosity of the comet nucleus is greater than 50%.For a dust-to-volatile ratio of 2, assuming material densities of 2.5 (some denser silicates and some less dense organics) and 1 respectively, this implies a very high porosity of 70% for the bulk properties of the nucleus.
Porosities of meteorites have been measured and range from zero to 24% but half of the samples measured below 6% and half measured above 6%.

You haven't demonstrated at all that the coma is produced by electrical discharge.
The sublimation of frozen 'ice; is reasonable. But please focus on the notion that ice is only water and not any other frozen material.
The material once released will interact in the unmysterious and unmagical fashion of standard physics.
Sol88:
I just want to check that you still believe 0.6 g/cc (the measured density of actual comets) is 3 g/cc (the predicted density of EC comets).
Is this right?
You mean the many actual measurements of the densities of both comets and asteriods as listed in many scientific papers and textbooks?Okay so (I think) Sol88 thinks the density should be 3 g/cc. RC thinks it should be 0.6 g/cc.
Evidence? Both of you?
Read the question again.Ahhhh i see why your are so gleefull RC, I misread your question!
The impact ejected material from the nucleus that was composed of 20-50% of water and 80-50% dust.In the post-impact briefing at 0100 Pacific Daylight Time (08:00 UTC) on July 4, 2005, the first processed images revealed existing craters on the comet. NASA scientists stated they could not see the new crater that had formed from the impactor, but it was later discovered to be about 100 meters (328 ft) wide and up to 30 meters (98 ft) deep.[33] Lucy McFadden, one of the co-investigators of the impact, stated "We didn't expect the success of one part of the mission [bright dust cloud] to affect a second part [seeing the resultant crater]. But that is part of the fun of science, to meet with the unexpected."[34] Analysis of data from the Swift X-ray telescope showed that the comet continued outgassing from the impact for 13 days, with a peak five days after impact. A total of 5 million kilograms (11 million pounds) of water[35] and between 10 and 25 million kilograms (22 and 55 million pounds) of dust were lost from the impact.[33]

Now, a second instrument on board India's Chandrayaan-1’s lunar orbiter confirms how the water is being produced. The Sub keV Atom reflecting Analyzer (SARA) corroborates that electrically charged particles from the Sun interact with the oxygen present in some dust grains on the lunar surface to produce water. But the results bring out a new mystery of why some protons get reflected and not absorbed.
The incoming protons are part of the solar wind, a constant stream of particles given off by the Sun. They collide with every celestial object in the Solar System but are usually stopped by the body’s atmosphere. On bodies without such a natural shield, for example asteroids or the planet Mercury, the solar wind reaches the ground. The SARA team expects that these objects too will reflect many of the incoming protons back into space as hydrogen atoms.
far as I can tell they're rocks??? Same as the moon asteroids and rocky planets!
Really simply shown to be wrong you meanMore Water on the Moon: Second Instrument Confirms Findings
And comets???far as I can tell they're rocks??? Same as the moon asteroids and rocky planets!
The process is just far more energetic on comets (highly charged rocks). Simple really!![]()
.Welcome to the thread Davidlpf.One simple question to the EU proponents, there are asteroids that travel in elliptical orbits from lets say from the earth to mars but do not have tail like a comet?
First yes such asteroids exists. Here is a link to a JPL webpage listing potentially dangerous asteroids. All go from within the orbit of the Earth to some with orbits several times the orbit of the Earth. Would you not agree there would be enough potential difference between the 2 points to generate the potential difference needed.
Second most electrical comets theory says there is a change in charge from the outer to the inner solar system and some effect causes a tail and the compostion for asteroid and comets are the same. So if both are composed of the same materials why the differnce between the two?
http://neo.jpl.nasa.gov/orbits/
One simple question to the EU proponents, there are asteroids that travel in elliptical orbits from lets say from the earth to mars but do not have tail like a comet?
First yes such asteroids exists. Here is a link to a JPL webpage listing potentially dangerous asteroids. All go from within the orbit of the Earth to some with orbits several times the orbit of the Earth. Would you not agree there would be enough potential difference between the 2 points to generate the potential difference needed.
Second most electrical comets theory says there is a change in charge from the outer to the inner solar system and some effect causes a tail and the compostion for asteroid and comets are the same. So if both are composed of the same materials why the differnce between the two?
http://neo.jpl.nasa.gov/orbits/