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Talk:Micro black hole

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very sensitive to the mass of the black hole. Also, for black holes smaller than the radius of a proton (pretty much all of these examples), the actual interaction mechanism will be absorption of a single quark. The result will be a black hole that carries color charge, which is bound into the nucleon it interacted with until it eats the other quarks. Cross-section for this depends on the wavefunctions of the bound quarks, which is a bit iffy (quark masses and nucleon binding energies aren't precisely known). Alternatively, if the black hole is moving very quickly, it might fail to drag the remaining quarks with it, which gives you a quark/antiquark pair forming when the bonds between the hole and the remaining quarks break. This is important because it affects how quickly the black hole slows down in matter (energy for pair production is sapped from the hole's kinetic energy). Speed threshold for a hole lighter than the nucleon is when the hole's kinetic energy exceeds pair production energy, and for the case where the hole is much heavier, it's where the energy required to accelerate the remaining quarks to the hole's speed is greater than the pair production energy. This is at least a really nifty problem, even if it isn't likely to happen much in the real world. --
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electron and the corresponding wavelength. Within that region they cannot be said to move or have a definite position. All we know is the probability of something reacting with them, such as a photon of the right energy being absorbed and moving the electron to a higher quantum number state with a higher energy, or conversely (as in a laser) a passing photon of the right energy stimulating emission of another photon of that energy as the electron moves to a lower quantum state.
91: 64: 204:: a Knowledge article shouldn't refer readers to an editorial discussion held about another Knowledge article in order to back up a theory. I haven't taken it out because someone who knows what they're talking about can hopefully rephrase it to explain how exactly an electron might be a micro black hole, and who has suggested this. I must say it's the first I've heard of it, but then I'm no physicist. — 304:
a hydrogen atom. How long before it ate the electron? the proton? (Clearly a charged black hole would eat "instantly" until it became neutral, and then slow way down). How long would it take to eat a gram of material (avogadro'snumber worth of hydrogen atoms) How about a few thousand tonns (at which point it becomes gravitiationally significant)? Just curious, and of course you know why :)
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INSULT US WITH THE 'COSMIC RAYS CAUSE THESE PARTICLES ALL THE TIME!' ARGUMENT, THE PARTICLES CREATED BY COSMIC RAYS DON'T GET CREATED AT REST, OR CLOSE ENOUGH TO BEING AT REST TO BE CAPTURED BY EARTH'S GRAVITY (OR SO I READ). NOW THAT'S NOT PROVEN EITHER, BUT YOU DON'T SEE ANY MENTION OF IT IN THE ARTICLE. JUST REASSURANCES THAT NOTHING WILL GO WRONG. NO BIAS IN THIS ARTICLE AT ALL, HEY?
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thousands to millions of times bigger than electrons. Plank length is much smaller than an electron or proton and plank temperature is much hotter than the center of the hottest stars which are trillions of degrees in r,k,c or f = rankine, kalvin, celcius or farenheit. Modern writters seem reluctant to give us numbers.
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If Hawking radiation was "wrong", i.e. didn't exist, so we dealt with a classical black hole that doesn't decay, how long would it take a 1500TeV classical black hole to "eat" some significant chunk of mass? For example, say I plunked the a (neutrally charged) 1500TeV black hole half-an-angstrom from
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Thanks. Reintroducing the paragraph seems like the best option for now. I don't know what to do about this unfortunately - it is not my area of expertise at all. I do feel however that we need to lose the self-reference. If anyone comes to this talk page wondering about that para the link is here for
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and got a headache. From the present article's subsection "Conjectures for the final state", it looks to me like maybe daemons are supposed to be these Planck-scale stable black holes. But I'm not sure how much credence the majority of physicists give to the experiments allegedly detecting them. I'm
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The topics may appear similar, but micro black holes and primordial black holes are not the same thing. Microscopic black holes have a mass that is lower than what is needed for them to form through a gravitational collapse. Hence, they must be formed by some other kind of process, but this may have
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Whilst on the subject of LHC, the article states that the maximum energy is "about 1.15 × 10 GeV". However, the published material on the LHC seems to concur that the energy of the collisions will be approximately 14 TeV (or 1.4 x 10 GeV) which is two orders of magnitude less. Am I missing something
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I'll do what I can during the week. The definition I'd heard was along the lines of "sizes at which quantum effects become significant", which would be anything approaching the Planck mass (from above). However, I have no idea what definitions are accepted as authoritative (could even be a catch-all
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I keep reverting the edits of manmade for humanmade, with the tag of POV edit. Though I can understand, but don't agree with, the PC element, the change itself is pointless as the the etymology of the word human is directly derived from 'belonging to man'. So the editor is changing one POV term, in
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As for "time required to eat things", to get numbers for that, you calculate the interaction cross-section between the black hole and protons/neutrons, and then plug in the density of whatever matter you assume it's orbiting in. I'll grind out numbers on Monday. I expect it to give a result that's
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The introduction to this page does not seem to be editable (sorry but I'm new to Wiki editing). Shouldn't the sentence "However, such quantum black holes would instantly evaporate, either totally or leaving only a very weakly interacting residue. " read "Hawking's theory states such quantum black
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We use to think the proton was about 1700 times smaller than an electron, but about 1700 times heavier, thus making the density about 3 million times greater. Electrons and protons are much too small to view with a microscope, but we have had some recent success imaging larger molecules which are
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AND NOT ONLY THAT JIM... IT'S QUITE OBVIOUS FROM READING THE ARTICLE, THAT THE AUTHOR WAS TRYING TO CONVINCE THE READER THAT MICRO BLACK HOLES POSE NO THREAT TO EARTH, WHEN THAT HAS NOT BEEN CONCLUSIVELY PROVEN. DON'T GET ME WRONG, I'M NOT AGAINST THE LHC, I SAY SWITCH THAT BAD BOY ON! BUT DON'T
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There was a short paragraph concerning the possibility of an electron being a black hole, however, I felt the text was redundant and there should simply be a link to a more thorough discussion of the topic. I agree that the sentence should be taken out, but should I then just re-enter the random
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Wow, thanks! Care to summarize some portion of this, and place it in the article directly? This is to serve several purposes: first is that I gather that there are conflicting definitions of what constitues "micro": by some, its stuff in the million-kilogram range, not the GeV range. The other
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This statement is nonsense and should be removed. Electrons do not orbit. Having both position and momentum simultaneously defined by orbital parameters violates Heisenberg Indeterminacy. Bound electrons are encountered somewhere near nuclei, mostly within a radius defined by the energy of the
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GeV, with no reference next to the number to indicate where this value comes from. BTW. Is it just me, or do other people find it strange to give the number as like 1.15 * 10 GeV. Why not: 1.15 * 10 eV or 1.15 PeV ? It is really confusing to mix SI prefixes with 10 notation together.
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The electron is shown to be gravitationally collapsed to its photon orbit radius. The electron angular momentum prevents collapse to its Schwarzschild radius and so the electron is not a black hole, though it is gravitationally confined. The electron mass has a specific relationship to the
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But I'm not sure how well what I've written reads. For one thing, I've now made it too long as a single lump of text without subdivision. For another, I suspect that too many of my sentences are too ungainly, so the whole thing could do with simplifying, spring-cleaning and freshening.
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and changed the article around quite a bit, to try to play up much more and much sooner why the Planck mass for a black hole is so important -- basically this is the mass below which we would expect Hawking radiation to be suppressed, and the gravitational entropy to get really granular.
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The electron spin may explain its stability. Black hole theory predicts that a rotating black hole with maximal spin will not have the elevated temperature needed to emit Hawking radiation. See book "Hidden Unity In Nature's Laws" by John C. Taylor, pages 370 and 371.---
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very skeptical myself. Is it worth linking to the daemons article or should a remark be added to "Conjectures for the final state" stating that recent experiments have claimed to detect them but they are still generally considered theoretical? .
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The Hawking citation(2) and the text disagree. Hawking posits minimum mass of 10^-5 g. No mention of Planck mass, only Planck length. I'm just trying to learn this stuff, so it would be good if someone who knew something could repair this.
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I think there's a little too much reference to the Large Hadron Collider in this article. There should be separate articles for Micro black holes, and the potential issues (including but not limited to them) that may arise from the LHC.
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paragraph, take it out entirely, or create a complete and official section on the possibility? Feel free to change it yourself if you think you know what to do. (in the mean time I will replace the sentence with the original paragraph.
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07:25, 16 May 2007 (UTC) Mainstream resently has decided electrons don't orbit, they vibrate. If they orbit at accelerating speeds they would approch the speed of light and approach infinate mass relative to an ouside observer.
420:, making these results unphysical (read: "really suspicious"). In practice, this reflects the fact that objects that small can't be black holes if our understanding of physics is correct (the smallest black hole is roughly the 875:
There are increasing calls and research pointing to a new prespective, seeing Atoms themselves as mini black holes from the space-vacum-zero-point energy around them. I found some really interesting info on the subject
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I hope people will think that anyway what I have done is still on balance an improvement. But I suspect the article could now definitely benefit from a good reactive sorting-out edit from other eyes and other hands.
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for "anything sub-stellar"). As for RHIC black holes, I'll do what I can to outline the arguments both ways (this seems to come up every time there's a new particle accelerator). For now, I'm going to sleep :). --
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There really should be a reference for these numbers in the article. Here I am reading the internet and I see everyone talking about a 7 TeV for the LHC. Then I go to Knowledge and I see the number 1.15
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Can someone add numerical estimates for following: what is the Hawking decay time for a 511KeV micro black hole? a 1 GeV micro? A 1500 TeV micro black hole (the last would be creatable by
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aspect has been lay-peoples concerns on hearing that RHIC may produce black holes; an at least partly-informed discussion along the lines you give would be suitable for this article.
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that gave his name to the radius, Schwarzchild himself contemplated the possibility ("If similar laws exist for the molecular forces, this circumstance could be of interest there").
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It fails to explain it's key terms in everyday language-- for example what is a Plank mass or a Hawking measure and why are they significant to the discussion of micro-black holes?
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Black hole analogies, are merely that -- analogies of black holes. They are not micro black holes with a new name. They do not belong in this article. For more information see
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happened at any time. Primordial black holes were formed in the extreme conditions directly after the big bang, but they may have any size from microscopic to super massive.
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well, you could probably get a rough estimate based on newton's universal gravitation. I don't know exactly how accurate this would be compared to an all out GR calculation.
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Could the second sentence of this article thus be amended to say something along the lines of, 'The concept that black holes may exist that are smaller than stellar mass was
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14TEV is the center of mass energy for a proton-proton collision which means 7TeV per charge. for a Pb-Pb collision the center of mass engergy is therefore 1150TeV
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I added the paragraph concerning the electron being a black hole because it seemed interesting and informative. If this is not appropriate please delete it. User:
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Harrison, B. K.; Thorne, K. S.; Wakano, M.; Wheeler, J. A. Gravitation Theory and Gravitational Collapse, Chicago: University of Chicago Press, 1965 pages 80-81
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their mind, to one which has greater POV connotations. Gender neutrality is not obtained by changing one word for another of the same etymological background.
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This article is about mBH not CERN or the LHC's production of them or it's consequences. There is an article already dedicated to LHC safety issues
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I also may have now too much downplayed (basically reflecting my ignorance) the discussion of what "quantum" black holes with mass less than
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And especially given the nature of Knowledge as a public informtaion source-- translation and clarification are needed here.
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Mention is made in the second sentence that Hawking first conceived of black holes smaller than a stellar mass. In fact, in
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I found this to be an absolutely fascinating exposition so I wikified it and turned it into a full-fledged article at
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ps: to me, mini black holes mean something else, but that's not in the topic of wikipedia as it is hypothetical :3
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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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Good science writing for public consumption will speak clearly to both the scientist and the lay person--
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Is there an article anywhere which details this phenomena (or lack of)? - Inquiring minds wish to know. --
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holes would instantly evaporate, either totally or leaving only a very weakly interacting residue."
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on Knowledge. If you would like to participate, please visit the project page, where you can join
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This article needs to explain it's main points so that non-scientists may follow it's essence.
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Many of the significant statements in this article are unreferenced or false, or both.--
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If you found an error with any archives or the URLs themselves, you can fix them with
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http://www.absoluteastronomy.com/discussionpost/Electron_as_a_ring_singularity_56595
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www.armonpogosyan.com Samwel Pogosyan - "Lattice from Primordial black holes".
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introduced in 1971 by Stephen Hawking.'? (with reference as provided above)?
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Do we really need this section? Why not a merge and a see also link to
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09:12, 6 July 2007 (UTC) Or are they just a combination of strings....
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All particles when their wave function collapses are micro black holes
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As it stands, this is an insular piece written for physics insiders.
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We ought to get rid of this sentence: "It has been suggested that the
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might be like - which was the original focus of the article.
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may be a micro black hole, for more info see the discussion
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for additional information. I made the following changes:
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Article on the lack of radiation from orbiting electron?
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is in kg. 1 eV is about 1.78e-36 kg, So decay times are:
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Appears out of proportion to the rest of the article.
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Knowledge level-5 vital articles in Physical sciences
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That was my aim, anyway; which I hope was sensible.
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Subbing in constants, it works out to: 292:Request for order-of-magnitude estimates 60: 19: 1012:External links modified (January 2018) 784:they seem to be used interchangeably. 412:All of these are far shorter than the 408:1.5 PeV (RHIC total energy): 1.6e-78 s 1122:Article Lead-in (first two sentences) 7: 112:This article is within the scope of 402:511 keV (electron mass): 6.3e-107 s 319:The evaporation time is derived at 49:It is of interest to the following 14: 1023:. Please take a moment to review 976:Wheeler and artificial black hole 1215:Knowledge level-5 vital articles 980:This statement in the article : 99: 89: 62: 29: 20: 1245:Mid-importance physics articles 152:This article has been rated as 1225:C-Class level-5 vital articles 967:06:20, 18 September 2011 (UTC) 605:This Article Needs Translation 540:04:15, 14 September 2006 (UTC) 405:1 GeV (proton mass): 4.7e-97 s 1: 1181:Very good I would say. 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Index


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Physics
Relativity
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icon
Physics portal
WikiProject Physics
Physics
the discussion
Mid
project's importance scale
the relativity task force
electron
here
self-referential
Trilobite
(Talk)
rmrfstar
(Talk)
Talk:Electron#Is the electron a small black hole?
Trilobite
(Talk)
DonJStevens
DonJStevens
14:47, 7 December 2005 (UTC)
http://www.absoluteastronomy.com/discussionpost/Electron_as_a_ring_singularity_56595

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