What is Discussion: Definition and 278 Discussions

Conversation is interactive communication between two or more people. The development of conversational skills and etiquette is an important part of socialization. The development of conversational skills in a new language is a frequent focus of language teaching and learning. Conversation analysis is a branch of sociology which studies the structure and organization of human interaction, with a more specific focus on conversational interaction.

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  1. C

    Exploring Other Dimensions: A Discussion

    Im not sure if this is the proper area for this but when they say that there might be other dimensions that we don't no about are they referring to more than xyz? i mean how could something have another dimension, it seems weird to think about. Just looking for someone who has some insight on...
  2. W

    Which Books Can Help Clarify Chapter 3 of Linear Algebra in Boas?

    I find that Chapter 3(Linear Algebra) in Boas is not very clear in certain areas. Could someone please recommend a book which does so more clearly?
  3. R

    Continuing Dopfer discussion

    Continuing the Dopfer discussion from other thread: Well of course there would be a pattern when you change from a near field experiment (Dopher) to a far field experiment (pinholes) you get different results from an entirely different experiment. There is no “In This Case” as there is no...
  4. humanino

    Another political discussion

    Ivanhoe and Isaac became pirates a long time ago. Both of them run for the position of captain. Everybody slips his envelop in the box one after the other. Ivanhoe receives P votes, and Isaac receives Q votes. Assuming P>Q, what is the probability for Ivanhoe to lead during the entire voting...
  5. L

    Does the proximity of a string to a spinning object affect its speed?

    I wonder, if you tie a string to a stone and spin it around, does the string that is closer to your hand move faster than the string that is tied to the stone? *EDIT* This question leads to a much greater topic of discussion, and the reason for leading off with this question is because the...
  6. ZapperZ

    So You Want To Be A Physicist Discussion

    "So You Want To Be A Physicist" Discussion Discussion on the article https://www.physicsforums.com/showthread.php?t=240792" by ZapperZ Comments, suggestions, questions are welcome. The series has almost reached the end of its intended purpose. At this point, I'm looking over it to plug...
  7. L

    Discussion of 'Valid method of proof'.

    definitely you can assume the premis and arrive at a truth and then consider your theorem truth only if the way from the premises to the truth result is connected by double implications. see 2 examples in the attached file
  8. U

    Pervect's discussion re photon/light perspective/reference frame

    Hi Pervect, You concluded the thread titled “Another question about photon perspective, concerning entanglement” initiated by Anticitizen with this post: You also concluded the thread titled “Reference frame of Light” initiated by Klotz with this post: I am having difficulty...
  9. T

    Online Discussion: The End of the World in 2012?

    I pose the question of why some are saying the end of the world is in 2012? some say we will flip, others say the north pole will fall to the side (becoming the new equator). Dave suggested i bring my question online to discuss.
  10. S

    Harmonic Motion with Multiple Springs - Examples & Discussion

    Greetings, Can you recommend a website or sites that has worked examples and discussion of harmonic motion with 2+ springs in various configurations? Thanks Sparky
  11. J

    Portal Discussion: Human at Speed of Light

    Hi all, I am very new to this forum so please let me know if I have posted this in the wrong place, and thanks in advance for any replies :) Backstory: My friends and I were playing a game called Portal in which you can place two portals (each of which leads to the other). We were...
  12. garrett

    An Exceptionally Technical Discussion of AESToE

    The media frenzy is dying down a bit, and I'm opening this thread to discuss technical questions from researchers and students as they read this paper. I'd like the discussion to involve short questions and statements involving equations so it can be quick and conversational. The main purpose...
  13. N

    Discussion on an easy MCQ problem

    Just a few hours ago,I have posted a problem in the homework section.Here I want to discuss a similar problem---I mean the interpretation of the answer of a similar problem. A block is placed against a vertical wall,and another block is placed against this block.We apply a horizontal external...
  14. radou

    A boundary value problem discussion

    A boundary value problem "discussion" So, let's say we are given a function f : [0, 1] --> R and constants a, b, and we want to find u : [0, 1] --> R such that u''(x) + f = 0 on <0, 1> with u(1) = a and u'(0) = -b. One can easily obtain the exact solution to this problem merely by using...
  15. Ivan Seeking

    Time travel discussion with Ron Mallet tonight

    Dr. Ron Mallett shares his research into time travel. http://www.coasttocoastam.com/ This is highly controverial, and my understanding is that it has been shown that his solutions are not valid. A PF discussion about this: https://www.physicsforums.com/showthread.php?t=147946
  16. S

    Prosaic discussion of basic lagrangian field theory

    I'm currently trying to pre-familiarise myself with the course on lagrangian dynamics I'll be taking in the upcoming year, by reading the course notes supplied. I'm somewhat getting the hang of it, but I could really do with some more indepth discussion about the whys and wherefores. Could...
  17. N

    Electrostatics Problem - Understanding Inertial Systems in Mechanics Discussions

    It is a mechanics discussion regarding a problem of electrostatics. Couple of months ago I dealt with a problem:Given two electric dipoles, separated at a distance r and are perpendicular to each other.We are to find the torque exerted on each other. I took p1 as vertical and p2,right to...
  18. N

    Mechanics problem Discussion

    Consider the following question:(this is not a homework problem,but it is one I want to discuss regarding its feature) A ball is falling onto a ground from a certain height and collides elastically and reaches the same height and the process continues.What is the averages force on the ground...
  19. D

    Classic buoyancy demo discussion on fluid dynamics

    Hello, I was attending a physics discussion on fluid dynamics (fairly basics concepts) and the classic buoyancy demo came up. (A test tube is inverted and allowed to be filled with enough water to float with the volume of air trapped in the tube, the test tube is inside a larger bottle which...
  20. L

    So I had a discussion with my research advisor about resistance vs. impedance

    He insists they are synonymous. I said I didn't agree. I told him that impedance is specifically the ratio of voltage to current in the s-domain or frequency domain. Impedance carries much more information that resistance alone. Is it technically correct to think of impedance as being the...
  21. V

    Fuse Wire Length and Capacity: A Discussion

    Homework Statement does the length of the fuse wire influence its cpacity? why? Homework Equations R=pL/a The Attempt at a Solution My teacher said no. I think it should because R depends on L Thanks for your time.
  22. N

    Friendly discussion: How do you feel the singularity came to be?

    Hello. It seems from what I’ve gathered on these forums since I’ve read and posted on here, it seems there are only a few possibilities of how the original singularity came to be, which caused the big bang. Those are: 1.) Oscillating universe – The universe goes through a natural cycle of...
  23. S

    More discussion on evolution and abiogenesis

    Science has no idea of the mechanism. All that will be said is that it just happened and because it did there was life, which continued. There is no explanation beyond that. Of course there are other explanations outside science which account for this issue, which I believe, but I cannot talk...
  24. N

    Matter being created from calorie intake? Interesting discussion

    Today my wife and I got into a little discussion on calorie intake and weight gain. A dietitian will tell you that if you take in an extra 3500 calories a day in your food, you will gain an extra 1lb if you do not burn off that 3500 calories. This is usually true, since there is no food out...
  25. P

    News Post election and new policy discussion

    To me, this election is over. Time to move on I must say, I am sad to see moderate Republican losing their seats because of their party affiliation. People like Lincoln Chafee deserves to have a say in the current political climate. Unfortunately, these moderates became indirect casualties of...
  26. O

    Another discussion with a friend

    A workmate and I have on-going disc^H^H^H^H arguments about Physics and I need a third party to break the deadlock on the latest one. I hope you guys can help. He is of the opinion that the effect on a car driver of running into a brick wall at 60mph is the same as if he had a head-on...
  27. A

    Questioning the Possibility of Immortality: A Forum Discussion

    The other day I was browsing a forum dealing with immortality and I read people taking their idiotic ideas to absolutely mind-bending directions. I quote: "I do fully agree with you about creating our own universe and stuff (just don't think it's going to happen any time soon). But...
  28. L

    Heated discussion about a flaw

    Dear all, I am having a heated discussion about this web paper: http://zanket.home.att.net/" I would like you to comment my opinion that this paper is wrong already in its introduction. I reproduce here the first lines of a figure caption found in the introduction: I don't discuss...
  29. A

    Velocity v & c^2: Simultaneous Events

    The set of events that are simultaneous to a person moving with velocity v is the same set of events that would be occupied by a hypothetical particle moving at (c^2)/v
  30. S

    Backward Causation in Quantum Mechanics: A Refreshing Discussion

    http://realityconditions.blogspot.com/2006/09/on-price-and-penrose-on-time-asymmetry_18.html" is a very interesting discussion of a proposal to allow backward causation in quantum mechanics. The basic idea is that the time asymmetry of QM ("collapse of the wave function") violates our...
  31. E

    Can a Car Perform the Same on a Planet with Less Gravity?

    Hello, I'm not much of a physics entrepeneur, but I was just discussing this with my friend, and hunger for a more difinitive answer came upon me: Say you design a car, and it does 0-60km/h in 2 seconds. Now say you want to redesign the car to do exactly the same results on planet Q, which...
  32. T

    Settle the Debate: Boiling Time of Water at Different Temperatures on Stove

    Here's the issue in question. Let's say you had two equally sized pans filled with equal amounts of water. The only difference between them is the water in one pan is 50 degrees while the other is 100 degrees. Next, they are put on the stove with equal flame applied, would the pan with 100...
  33. Andre

    E-mail to JV (Global Warming discussion)

    E-mail to Jan Veizer Subject: The missing link is albedo variation (Pallé et al, EOS Jan 2006) Just showing that the global warming of the previous decennium can be explained by natural factors.
  34. T

    Discussing Other Minds: Referencing Avramides' Book (2001)

    Hi, I was hoping to discuss the book "Other Minds" (2001) by Avramides. Or rather : discuss the topic of other minds, and use the book as a reference (as I understand it gives an historical overview of approaches to the problem). The problem of other minds interests me a lot. I feel...
  35. H

    Is there a difference between normal and anti-gravitating geodesics?

    Dear vanesh, I have decided to move the anti-gravitation discussion into a new thread. At least in this regard josh is right, it's gotten a bit off-topic in the old one. For those who want to follow, discussion is about the paper http://arxiv.org/abs/gr-qc/0508013" see also...
  36. Gokul43201

    Spectroscopy Discussion Thread

    The intent of this thread (for now) is to introduce the basic theoretic principles of rotational/vibrational spectroscopy, follow this up with a brief sketch of the expermiental techniques and finally zoom in on the experimental and theoretical aspects of a specific technique of recent interest...
  37. P

    Split from Spectroscopy Discussion Thread

    A laser in visible is used in Raman spectroscopy and the resultant spectrum is in IR and Microwave region(which means molecular vibrations and rotations are excited), what type of interaction is this that induces these levels? ( I cannot think more than..."To be Raman active molecules should...
  38. Evo

    General Discussion Quiz: Test Your PF Knowledge Now!

    I posted this in a newbie thread and no one has gotten it. Come on, I know there are members out there that know this stuff. This is a PF scavenger hunt. You can search PF for the answers if you don't already know them. I'll bet BobG nails this one. 1) What did tribdog do to his...
  39. K

    Was the universe created? (not an evolution discussion)

    Hi. I have a problem with a statement that was in the first chapter of my "World Religions" book for school. It first explains that the word "God" can have many different meanings. It then concludes the chapter with "It is a fact, not a mystery, that God, whatever or whoever God might be...
  40. J

    Cellular respiration biology lab discussion

    I need help writing a discussion for the biology lab report that I'm doing. If anyone could help in explaining the results it would be much appriciated. Here's the experiment... We had 6 flasks each containing yeast, sugar and water. 2 of the six we added 5ml of 1.0 M HCl and into two others...
  41. G

    Relative Velocity Discussion

    Relative Velocity? OK - I'm having problems visualizing a relative velocity problem. Please let me know if I am on the right track... problem involves a jet with initial V of 300 mi/h due east that encounters winds at 100 mi/h in a direction 30 degrees north of east. I need to calculate new...
  42. R

    Bob Avakian in a Discussion with Comrades on Epistemology

    Hey everyone, I am new to these forums and want to make it clear up-front that I am coming from a revolutionary Marxist-Leninist-Maoist perspective. The philosophy that I uphold is very much in line with the point that Karl Marx made that "the various philosophers have interpreted the world...
  43. ohwilleke

    Exploring Heim Theory: A Discussion

    I'm not endorsing Heim theory, which is described here: http://en.wikipedia.org/wiki/Heim_theory But, I am interested in what anyone has to say about it.
  44. C

    Motion Mountain: Reader Reviews & Discussion

    Has anyone read Motion Mountain? If so, how good is it? :smile:
  45. I

    Solving Box Sliding Down Plain: V(0) Calculation

    I was asked to solve the following problem: A box is sliding down a plain inclined 30 degrees above the horizontal. towards a spring attached to the start of the plain. when the box hit the spring its velocity is V(0). the box continue moving for another 0.1m until a complete stop. *...
  46. B

    Qualifications for Verbal Discussion

    I propose the following self-test to determine whether your reading comprehension is high enough to engage in rational discussion on a message board: Get a copy of an old verbal SAT (these can be found in one of the books "10 SATs"). Find the passage reading comprehension sections, and do...
  47. L

    Living with Diagnosed Condition: A Discussion

    so how many other people on this board have been diagnosed with such condition? (blank stare for 5 minutes) ok. please reply
  48. Gokul43201

    What are vvvdat tables and how can they help with introductory physics homework?

    This is space to start writing up and discussing ideas, structure and content for a possible Physics Homework FAQ type of sticky thread. Note : This is an attempt to implement marlon's idea in the Feedback Forum
  49. R

    Uncovering the Truth: A Discussion

    Truth a fact that has been verified; reality - actuality That's my definition. But how do you get past those who say that the truth is a statement merely accepted to be true. And is there absolute truth? I am typing. Is the above an absolute truth? I believe, it is at least true...
  50. F

    Debating Object Buoyancy: Hollow vs Solid Spheres in Water

    I have been having a discussion with a friend for the past few days, and we are in sort of a stand still on a problem. We would greatly appreciate some input into our discussion. The question is this: A hollow spherical object weighs ten pounds with a certain density, and size floats in...
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