lflage/wiki-talks huggingface dataset:
Talk:Liesegang rings

message: From the article, it does not become clear whether the Liesegang rings are in fact really rings or just layers. If a layer is formed in a test tube, it looks like a ring. If a similar experiment is performed in a wide container or cup, would you really see rings or just thin layers? 
That seems like an important difference to me. Johan Lont 11:57, 14 March 2007 (UTC)
replies: text: You get rings in a wide container. Think of it as a periodic function on the distance to the introduced reactant. It's not always rings,however, in some experiments spirals or, in the case of test-tubes, helixes have formed. --Gmaxwell 21:07, 7 October 2007 (UTC)

text: The effect was named "Liesegang rings" or Liesegang's rings" after the experiments of Liesegang in the 1890s, in which a drop of silver nitrate solution was dropped onto a thin layer of gelatine containing potassium chromate on a glass plate, producing rings. The layers-in-a-test-tube manifestation of the effect was noticed later but the underlying mechanism is probably the same. Longitude2 (talk) 14:21, 3 January 2021 (UTC)

text: The author of the web site has some older published works (in legit reviewed journals) which outline models for Liesegang pattern formation, but I cannot tell if any are the IDNB model since there isn't any detail of the model on the website.  If the model is not one of the published works, perhaps it should not be referred to in the wiki article, and the link removed.  There are some very nice pictures on that website, however.  If the IDNB model is the same as the published works, I do not see a scientific consensus for it being the best model.134.129.87.43 (talk) 22:25, 8 September 2010 (UTC)

message: Some textbooks state that Liesegang's experiments used potassium chromate, not dichromate . Longitude2 (talk) 14:24, 3 January 2021 (UTC)
thread_title:  Chromate or dichromate?
Talk:Linear dynamical system

message: Can someone please translate this article into terms which a non-mathematician would understand?
- An Australian engineer too lazy to log in  —Preceding unsigned comment added by 202.147.46.214 (talk) 00:42, 20 February 2008 (UTC)
thread_title:  Translation please 

message: I think it would be more appropriate to call this voice "Continuous linear dynamical system" because there are also "discrete linear dynamical system"s which are not considered here.--Pokipsy76 (talk) 13:45, 12 July 2010 (UTC)
thread_title:  Maybe we should rename the voice 

message: The opening sentence on this article is a painful tautology to read. Surely it can be improved.
"Linear dynamical systems are dynamical systems that are linear."
199.46.200.231 (talk) 15:01, 7 February 2013 (UTC)
replies: text: That has been fixed, but is it correct: should “whose evaluation functions are linear” perhaps read “whose evolution functions are linear” (though the link, being redirected to dynamical system is actually useless)? PJTraill (talk) 22:45, 28 July 2014 (UTC)
thread_title:  Opening Sentence 

message: the Evaluation functions wiki link is broken  — Preceding unsigned comment added by 2A02:2149:8806:E400:49EF:8D6A:553D:F1A9 (talk) 23:31, 30 August 2018 (UTC)
thread_title:  Evaluation functions 

message: As a classic theory, linear dynamics has been researched a lot with various rigorous results worth a textbook. But landing on this page, I'm very surprise to see the content is so simple... to the point that it seems unrecognizable visually!?!
At least, the classification should be enhanced with visualization like the following:
* 2D: Instead of the text-only figure , there should be sample vector fields attached like this.
Here are some codes (Chebfun2) to generate visuals: https://www.chebfun.org/examples/ode-linear/DynamicalSystems.html
* 3D: Some animation with 3 complex eigenvalues like this: 
07:26, 24 June 2021 (UTC)
thread_title:  The content should be improved with details and visualization
Talk:Head (botany)

message: * "A head where the bracts form an involucre under the basis is called a capitulum - should that be basis, or base?
**Probably "base".
* Ray and disc flowers or ray and disc florets?
** Either is fine. "floret" is a technical term for 'em. Asteraceae and Flower both mention "floret."
* "The capitulum is considered the most evolved form of inflorescence" - most evolved seems a bit odd - most derived maybe? Guettarda 00:03, 29 November 2006 (UTC)
thread_title: Questions
Talk:The Machine That Changed the World (book)

message: Here is the stub, I think I wont have time to expand this.Kerem Ozgur 00:03, 29 November 2006 (UTC)
thread_title: Dumping this here

message: I accidentally removed the notability tag.  I have restored it.--Mockingbird0 (talk) 13:13, 2 September 2008 (UTC)
thread_title: Notability
Talk:Unionist Party (Canada)

message: The infobox states that the Unionist Party was formed in 1911, but the text of the article states it was formed in 1917.Captrobb (talk) 01:41, 9 October 2015 (UTC)
thread_title: Untitled
Talk:Loop entropy

message: Could someone please look at the formula? I'm not too good at these, so someone with more knowledge will need to look at it! Thanks, PhantomSteve/talk|contribs\ 05:26, 24 February 2013 (UTC)
thread_title:  Parsing error.... 

message: I skimmed the source but couldn't find if it discusses loop entropy or just Wang and Uhlenbeck method. Also, I am not an expert in the subject. Here is a link to a pdf of the journal article: http://216.92.172.113/courses/phys39/simulations/Uhlenbeck%20Brownian%20Motion%20Rev%20Mod%20Phys%201945.pdf
At any rate, the article would benefit from more sources.BananaCarrot152 (talk) 05:45, 14 October 2017 (UTC)
thread_title:  Source
Talk:Tal Ben-Shahar

message: Reverted text due to copvio.  Taken directly from the person's web site.  http://www.talbenshahar.com/bio.php —Preceding unsigned comment added by Whpq (talk • contribs)  2006-11-29
Ben-Shachar's PhD is not from Harvard Business School.  HBS is actually not even authorized by the University to grant PhD's -- their own doctoral students are DBA's, instead.  To deal with this complexity, HBS has several "joint" programs with the Faculty of Arts and Sciences (FAS), among which Organizational Behavior is one (others are Business Economics, Health Policy, and Science Technology and Management).  The Organizational Behavior program is jointly administered with two departments in Harvard University's FAS -- the Psychology and Sociology departments -- and, formally, the PhD is granted by them.  It is in fact more accurate to say that Ben-Shachar holds a PhD from Harvard's Psychology and Sociology departments than it is to say that he holds a PhD from HBS.  But since the situation is messy, let's just say it's a "PhD in Organizational Behavior from Harvard University."
(For a reference on this, please see http://www.hbs.edu/doctoral/programs/ob/, which states: "Offered jointly by the Departments of Psychology and Sociology in the Faculty of Arts and Sciences and Harvard Business School, the program combines training in the theory and methods of psychology and sociology, the study of business administration, and empirical research on organizational phenomena."  )
I can't help but note that much of this article takes a sneering tone toward Ben-Shachar's work and comes pretty close to being POV.  The attribution of his PhD to HBS is, I imagine, just a subtle attempt to discredit his understanding of psychology.  Maybe I'll edit some more later.
208.54.15.215 01:03, 6 September 2007 (UTC)
thread_title: Copyvio

message: I am a Harvard undergrad who has taken Tal Ben Shahar’s Positive Psych class and this link (http://www.thefinalclub.org/blogs/spring2008/PositivePsych/) is to a site with interactive blogs done on Harvard undergrad lectures.  The posts for each lecture are extremely useful (my prep for the final consisted almost solely of reading these blogs) and anyone can read and contribute to the commentary of the texts on the site. 
If you read through a lecture or two and agree, I'd encourage someone with more Wikipedia clout than myself to post on the Tal Ben-Shahar page.  Let me know what you all think.  I'd love to hear your thoughts.  —Preceding unsigned comment added by Bbrasky100 (talk • contribs) 16:23, 19 June 2008 (UTC)
thread_title:  External Links
Talk:Lyapunov time

message: : the time for nearby trajectories of the system to diverge by e.
To a layman, "diverge by e" suggests an absolute distance, though there are no units.  I was about to change it to something like "the time for a difference between nearby trajectories to increase by a factor of e", but thought best to seek confirmation here first. —Tamfang (talk) 17:26, 17 July 2010 (UTC)
thread_title:  what it means 

message: I think I can describe it better. It is the time constant of the size of the effect of any perturbation, and this includes the effect of the uncertainty of the measurements. The term "time constant" usually being reserved for non-chaotic systems defined by first order linear differential equations, such as charging a capacitor through a resistor (for which the time constant is the resistance times the capacitance - and it's also normally a decaying exponential, whereas this is an increasing one). In other words, if your measurements were to be more precise and accurate by a factor of e, that would only buy you this amount of additional time for which your predictions would be accurate: you could trust your calculations into the future (and reconstruction into the past) by an additional quantity of this amount of time. The "size" of a perturbation may not be easily objectively quantifiable when the perturbation gets amplified by chaos to the extent that the state of the systems with and without the effects of the perturbation bear little resemblance to each other, but at the beginning when the perturbation (or uncertainty due to limitations in measurement) is essentially an infinitessimal, it is meaningful to say it has increased by a factor of e in this amount of time. Especially if the precision is extreme. For instance, if you had 9 digits of precision, as ln(10) is about 2.3, that would mean that whatever predictions you make would very nearly equally reliable for the same system measured accurately with 10 digits of precision but predicted 2.3 of these time constants longer into the future. The magnitudes of the uncertainties in position and momentum of every element in the chaotic system should increase by a factor of e in that time, because that is the factor by which the effects of an infinitessimal perturbation exhibits in that amount of time relative to the course of events if the perturbation had not happened.
75.164.251.184 (talk) 06:18, 24 November 2013 (UTC)
thread_title:  a better statement of this - as a time constant 

message: Hello all. I have left a tag on this article because it is too difficult for the layman to understand. I know that some people don't like tagging articles, but those people need to remember that I can't fix it myself because it's too complicated to understand!  Chase me ladies, I'm the Cavalry (Message me) 18:04, 10 July 2014 (UTC)
thread_title:  Too technical 

message: What exactly is being predicted here? The trajectories of the individual atoms? I do not have access to the original source; perhaps somebody who does could specify it in the article?  — Preceding unsigned comment added by 86.49.8.80 (talk) 13:10, 26 March 2020 (UTC)
thread_title:  Argon examples
Talk:Madelung constant

message: what is sech in the converging formula for the Madelung constant of NaCl ?  — Preceding unsigned comment added by 37.138.169.178 (talk) 13:57, 25 October 2019 (UTC)
replies: text: Sech(x) is the hyperbolic secant of x. 2804:14D:4683:10CD:9184:E581:DE56:E4E (talk) 14:43, 27 November 2023 (UTC)
thread_title:  sech
Talk:Thin plate spline

message: This is verbatim from "A new point matching algorimth for non-rigid registration" Haili Chui, Anand Rangarajan.  I don't know who copied from who.  I tried implimenting this algorithm and found numerous mistakes (i.e. dimension mismatch of matrices for multiplication).  I've corrected the ones present in this wiki article too.
DRH: This article is horribly written (as are most articles on TPS).  The nomenclature is used inconsistently.  For example, x and y are used for space coordinates (i.e., the x-coordinate and the y-coordinate of a 2-D space) and as the domain (x) and range (y) of a function (i.e., f:x -> y).  There are numerous other problems.  Are there supposed to be multiple phi's (script phi and non-script phi)?  Is phi a 1-D function or a 3-D function?  If it is 1-D, why is it dotted with a 3-D vector?  Someone who really knows TPS ought to rewrite this article so that it makes sense. --Darrell
The advantages listed in the Application section are not well expressed:
1. The word "interpolation" is used, but the thin plate spline solutions in general will not interpolate the data points (x_i, y_i), since it is a form of penalised least-squares regression. In the limiting case for an infinite weight parameter lambda the solution will be the same as a simple linear regression through the data points, which will only be an interpolating function if all the data points lie on a plane.
2. It is claimed that "the model has no free parameters that need manual tuning" - my understanding is that the non-negative weight parameter lambda still needs to be set appropriately - from memory Wahba's book explains some ways to do this using cross validation. This certainly sounds like tuning to me!  —Preceding unsigned comment added by 138.194.29.10 (talk) 00:47, 5 May 2011 (UTC)
thread_title: Untitled
Talk:Magnetic dipole–dipole interaction

message: I have started a general discussion of the many treatments of the magnetic dipole field at Wikipedia talk:WikiProject Physics#Treatments of the magnetic dipole field. RockMagnetist (talk) 03:09, 3 August 2011 (UTC)
replies: text: This note aims to clarify the origin of the magnetic dipole-dipole interaction between dipoles 1 and 2, which is usually given as -B1(r2)•m2 or -B2(r1)•m1, or the equivalent. The point of confusion is that each dipole feels the field of the other, so why isn't the interaction the sum of these terms? The answer is the following. The total energy of the two-dipole system is the energies of the dipoles plus magnetic field energy: U = U1,0 - B2(r1)•m1 + U2,0 - B1(r2)•m2 + ʃ dV B1(r)•B2(r)/μ0. It happens that ʃ dV B1(r)•B2(r)/μ0 = B2(r1)•m1 = B1(r2)•m2, hence the usual interaction energy. By the way, the total field energy is: ʃ dV [B1(r)+B2(r)]2/2μ0, but the self-field energies of the two dipoles are implicit in the energies of the dipoles and therefore do not appear explicitly. This physics should appear at least in the Wikipedia section on the magnetic dipole-dipole interaction. TLemb11 (talk) 00:12, 3 January 2023 (UTC)
thread_title:  Treatments of the magnetic dipole field 

message: Would be very interesting if someone added an example such as electron proton interaction.  Thanks!   Daniel.Cardenas (talk) 17:54, 13 March 2024 (UTC)
thread_title:  Electron proton interaction?
Talk:Geoffroi de Charny

message: This page is a mess.  Anybody know what the Order of the Star stuff is about?  Lordjim13 00:13, 29 November 2006 (UTC)
replies: text: Order of the Star : French fleeting chivalric order created by John II of France, November 6th, 1351. See :fr:Ordre de l'Étoile if you understand French. No link with the article Order of the Star. --BeatrixBelibaste 06:33, 29 November 2006 (UTC)
replies: text: Merci!  That clears things up and I will link to the French page.  If somebody wants to create an English page on the medieval Order of the Star, that's cool, too.  Lordjim13 23:44, 12 December 2006 (UTC)
replies: text: Translated, plus some. See also the Dutch Wiki. Srnec (talk) 05:42, 13 July 2008 (UTC)
thread_title: Untitled

message: Have removed some uncited material, mainly about the unproven (and possibly unprovable) relationship to Knight Templar. Have cited some other material. Also, I have added description of his affiliations with Scotland and his death by Froissart which is corroborated by English accounts.
This man is a difficult subject to write about.  Much of the materials about him have not yet been translated in Modern French or English. His and/or his wife's affiliation with the Shroud of Turin produces much material which may or may not be true.  One has to be very careful to meet Wiki standards.  
This great Knight deserves careful research.  Perhaps one of the French or Dutch critics would like to contribute rather than just criticising? Forgot to sign. signing now Mugginsx (talk) 17:01, 24 June 2012 (UTC)
thread_title: Cleaned up the Article, added substantial information
Talk:List of Romanian-language publishers

message: Likelihood of all these getting articles that read more than "X is a publishing house in Y, Romania"? Probably low. So do we want links around all of them to begin with? Biruitorul 00:24, 29 November 2006 (UTC)
replies: text: Actually, I've selected the ones that are likely to be expanded beyond that point (in theory, all of these and others I shall add could have smallish-to-featured articles). Dahn 00:33, 29 November 2006 (UTC)
replies: text: Oh, OK. That is about 84 orange links, but if there's hope for substantive articles emerging, that's all that matters. Biruitorul 01:23, 29 November 2006 (UTC)
replies: text: As long as you're not expecting me to create all 84 substantive articles. :) Dahn 01:29, 29 November 2006 (UTC)
thread_title: Untitled
Talk:MODTRAN

message: "MODTRAN5" is so written at one point in the article. What does the number 5 mean, please?Chjoaygame (talk) 20:57, 18 July 2010 (UTC)
thread_title: what does the number 5 mean in "MODTRAN5"
Talk:List of justices of the Supreme Court of Canada by court composition

message: Can somebody please fix the graph in the "Wagner Court" section? Someone updated it for the new justice, but the graph isn't showing. Can somebody please fix it so it can show up? Please. — Preceding unsigned comment added by 2600:6c48:427f:f84e:b818:e140:af2e:225b (talk) 01:04, 13 July 2021 (UTC)
replies: text: TheFeds 22:54, 17 September 2021 (UTC)
thread_title:  Fix the graph
Talk:David Dixon Porter

message: Hello! This is a note to let the editors of this article know that :File:David Dixon Porter - Mathew Brady's National Photographic Art Gallery.jpg will be appearing as picture of the day on June 8, 2016. You can view and edit the POTD blurb at Template:POTD/2016-06-08. If this article needs any attention or maintenance, it would be preferable if that could be done before its appearance on the Main Page. — Chris Woodrich (talk) 00:30, 23 May 2016 (UTC)
thread_title:  [[:File:David Dixon Porter - Mathew Brady's National Photographic Art Gallery.jpg]] to appear as POTD soon 

message: Is anyone opposed to the addition of the category "people of delaware county".  I had added it to this page but it was deleted by Naterybner.  With the comment "Chester and Delaware County are far apart".  They are not.  Chester is a city within Delaware County.
:If Porter was from Chester and did not live outside the city, do we need both? If the county claims him as a "native son," yes, otherwise...--Georgia Army Vet Contribs Talk  16:48, 4 February 2018 (UTC)
thread_title: Inclusion of Category:  People of Delaware County
Talk:List of Negima episodes

message: List of Oh My Goddess episodes is a featured list for anime episodes.  Let's see if we can mimic that. KyuuA4 00:31, 9 March 2007 (UTC)
thread_title: What a Featured List looks like

message: Okay, I know for sure that there is an OVA or two of this show.  How come no info on those shows up on this page? 66.219.158.194 (talk) 03:09, 12 July 2009 (UTC)
thread_title:  OVAs? 

message: Anyone have them? Mirrors (film) featured a Negima anime poster as well as a Tsubasa Chronicle one so I'm curious. ScratchMarshall (talk) 01:22, 28 March 2018 (UTC)
thread_title: English dates
Talk:Zelda

message: thankyou for fixing the page :)
even though they may be shameful, the CD-i games should also be here, no? --AnY FOUR! 17:33, 27 July 2007 (UTC)
thread_title: Untitled

message: Not related to Indonesia lol. But this thai statioin hates Poland.
I wonder what is the program "No Poland"  is about?
I love the Zelda drama at 20:00. I watched yesterday.
--125.25.12.210 (talk) 23:30, 11 August 2009 (UTC)
thread_title:  Zelda TV (TV in Thailand. It's so indonesiatic!) 
Talk:Moving magnet and conductor problem

message: I was looking for, but did NOT find it: A real experiment involving an electromagnet that is switched on and off, a short piece of copper wire or a coil situated within the magnetic field, and a sensitive voltmeter connected to the two ends of that wire. As that electromagnet is switched on a voltage pulse would be generated as shown on the voltmeter in one direction, and as the electromagnet is switched off that would result in a voltage pulse in the opposite direction. What  quantitive relations can be measured?
And how about a different experiment during which the magnetic field is measurable and variable and so is its rate of change in both directions.70.27.152.243 (talk) 23:35, 8 July 2016 (UTC)
thread_title: Untitled 3

message: I can't follow the proof, in the section "Transformation of fields, assuming Galilean transformations", subsection "Conductor frame". Suppose the relative motion between the magnetic field and conductor is along the X-axis, and suppose the magnetic field is constant through space and everywhere directed parallel to the Z-axis. Then in the conductor's frame of reference, there is no changing magnetic field anywhere. In this case you'd need Special Relativity to prove the result, so this "Galilean proof" seems dubious to me.— Preceding unsigned comment added by 2600:8800:7b84:7000:918f:eaf2:ae46:8d5e (talk) 07:46, 29 October 2017 (UTC)
thread_title: Untitled 4

message: The section doesn't seem to add anything to the article.  Its only readable by specialists.  It might be appropriate for a physics textbook for upper division dynamics, but it not useful for the average reader (or even the better than average reader) of physics articles.  Constant314 (talk) 19:36, 12 March 2019 (UTC)
thread_title:  Suggest "Newton's law of motion in modern notation" section to be deleted.
Talk:Multi-wavelength anomalous diffraction

message: MAD vs SIRAS?
As I understand it, the description in the first paragraph "where two crystal structures exist -- one structure for which one or more atoms has been replaced by heavy-atoms" is wrong: if there are two structures (crystals) in one of which light atom(s) has been replaced by heavy anomalous scatterers, that involves Isomorphous Replacement. The particular scenario described would be called SIRAS - single isomorphous replacement with Anomalous Scattering. MAD involves a single crystal with anomalous scatterers, which may have been prepared by soaking a native crystal with heavy atom, but if so the native crystal is not used. In the case of "native mad" there is no replacement at all- a naturally ocurring anomalous scatterer such as iron in a heme or ironsulfur cluster provides the anomalous signal. The description was more accurate before the revision of 31 July 2011. Eaberry (talk) 06:00, 19 April 2012 (UTC)