What is Class: Definition and 942 Discussions

A social class is a set of concepts in the social sciences and political theory centered on models of social stratification which occurs in class society, in which people are grouped into a set of hierarchical social categories, the most common being the upper, middle and lower classes. Membership in a social class can for example be dependent on education, wealth, occupation, income, and belonging to a particular subculture or social network."Class" is a subject of analysis for sociologists, political scientists, anthropologists and social historians. However, there is not a consensus on a definition of "class" and the term has a wide range of sometimes conflicting meanings. Some people argue that due to social mobility, class boundaries do not exist. In common parlance, the term "social class" is usually synonymous with "socio-economic class", defined as "people having the same social, economic, cultural, political or educational status", e.g., "the working class"; "an emerging professional class". However, academics distinguish social class and socioeconomic status, using the former to refer to one's relatively stable sociocultural background and the latter to refer to one's current social and economic situation which is consequently more changeable over time.The precise measurements of what determines social class in society have varied over time. Karl Marx thought "class" was defined by one's relationship to the means of production (their relations of production). His understanding of classes in modern capitalist society is that the proletariat work but do not own the means of production, and the bourgeoisie, those who invest and live off the surplus generated by the proletariat's operation of the means of production, do not work at all. This contrasts with the view of the sociologist Max Weber, who argued "class" is determined by economic position, in contrast to "social status" or "Stand" which is determined by social prestige rather than simply just relations of production. The term "class" is etymologically derived from the Latin classis, which was used by census takers to categorize citizens by wealth in order to determine military service obligations.In the late 18th century, the term "class" began to replace classifications such as estates, rank and orders as the primary means of organizing society into hierarchical divisions. This corresponded to a general decrease in significance ascribed to hereditary characteristics and increase in the significance of wealth and income as indicators of position in the social hierarchy.

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  1. K

    B What Does the Notation = in Equivalence Classes Conclude to?

    Please refer to the video at 37:02 from the link above. I am struggling with the notation "=" of the property (a) which concludes to [a]=[m]. shouldn't it be [a]⊆[m], just like [m]⊆M.
  2. A

    Fermi Decay: ∆S=0 & ∆J=0 Class of Decay

    I think that this is a relatively easy question (no equations) however I cannot seem to find anything on it. "For which specific class of decay is only the Fermi decay mode possible?" I know Fermi decay is ∆S=0 and therefore ∆J=0 type of decay
  3. S

    Are proofs from calc class needed for EE?

    Hi, I am a first year calculus two student. I found that I have serious trouble understanding the derivation of formulas. For example, I can solve most of the exam problems because they are just using formulas, say arc length = Integral(sqrt( 1+ (dy/dx)^2)dx, but my textbook actually has two...
  4. D

    Brownian motion demonstration in class

    Hello, Einstein evaluated the size of an atom by analysing a brownian motion, assuming the size of the molecules is a a factor. In order to demonstrate this concept, I want to put some powders with different sizes of grains on a vibrator and watch how a ball moves. What is the expected result...
  5. T

    Schools How seriously will colleges take non-AP classes?

    Hi everyone, just a quick question about college applications. I'm in a STEM program at a public school, and some of the classes that I take are weighted as AP even though they are not official AP classes. Some people that I've talked to have seemed to disregard these as just the school being...
  6. Mr Davis 97

    Abstract algebra class equation

    1. The problem statement, all variables and given/known If each element of a group, G, has order which is a power of p, then the order of G is also a prime power. Homework EquationsThe Attempt at a Solution I am not sure really where to get started. I know that the class equation will be used...
  7. jlmccart03

    Identify class for three metal bars (Magnetic Field)

    Homework Statement I need to identify which class bar 1 and bar 2 belong in based on observed attraction/repulsion. Then I need to determine if the end of 2A would attract, repel, or niether to end 3A. EDIT: Could not get this image in the post due to security reason apparently so here is the...
  8. P

    Studying Not doing well in a class -- Teacher is abusive. help please

    So in my upper division mechanics course I've stared to not do well on my quizzes. The difference between a fail is 30 points and a few points extra is a 80 -90. The tests have a very fine line, and the teacher does not think this is a issue. So I go to ask him for help. He gets mad at me when...
  9. blixel

    Class Project: Tennis Ball Launcher

    What I'm here to find out I am in the early stages of planning for a tennis ball launcher I'm doing with my group for a class project. I want to find 2 cheap electric motors that will spin fast enough, and have enough torque, so that I can attach some wheels to the spinning motors for the...
  10. N

    MHB Creating a Public Item & Cart Class

    Make everything in public to save time or have public and private data members and functions: 1) Create a "Item" class with the following members and functions: Item_name Item_price item_qty get/set functions 2) Create a "Cart" class with the following members and functions...
  11. N

    Courses When is it worthwhile to retake a class?

    I'm a freshman who just finished their first semester at (insert elite university that I don't want to namedrop here), and I am an engineering physics major with a hope to one day do grad school in applied physics at a similar school. Anyway, due to the almost non-existence of a curve and the...
  12. Z

    Class AB or Class D for a home theater amplifier

    I am planing to assemble a 5.1 channel amplifier. I selected the famous TDA2030 as the basic element and is simple to proceed. But I have a confusion, whether to use some other Class D amplifier for better quality.Conceptually, a Class D amplifier is considered by some music purists to be less...
  13. S

    I Finding the Class Equation of SL2(F3)

    Hello! Is there a way to find the class equation of SL2(F3), other than writing down all the 24 matrices and do all the necessary computations?
  14. AD MCFC

    Studying Review for Upper Division Class Mechanics course?

    Hello, I will take Classical Mechanics I (upper division) course fall of 2017. I have not seen Mechanics material since fall of 2014 and would like suggestions on how to review the concepts prior to taking the class. I was pretty good in that class and do not need to "re-learn" anything per...
  15. N

    Elements of an Equivalence Class

    < Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown > Question: Let ~ be the equivalence relation on the set ℤ of integers defined by a~b if a-b is divisible by 5. Let k ∈ Em belong to the equivalence class of m, and l ∈ En belong to the equivalence...
  16. E

    C/C++ [C++] Unit testing of a class HELP

    I'm given the code: #include <iostream> using namespace std; class InventoryTag { public: InventoryTag(); int getQuantityRemaining() const; void addInventory(int numItems); private: int quantityRemaining; }; InventoryTag::InventoryTag() { quantityRemaining = 0; } int...
  17. mktsgm

    Medical Why do students struggle to stay awake in class?

    Many a time we all have faced it while sitting in a class. During lectures we have a strong urge to sleep (rather we make a strong effort not to fall asleep. Especially if you are seated in the front rows.) It is not just boredom. I feel it is only when we want to concentrate, we tend trio fall...
  18. L

    A Why the Chern numbers (integral of Chern class) are integers?

    I am a physics student trying to self-learn Chern numbers and Chern class. The book I am learning (Nakahara) introduces the total Chern class as an invariant polynomial of local curvature form ##F## ## P(F) = \det (I + t\frac{{iF}}{{2\pi }}) = \sum\limits_{r = 0}^k {{t^r}{P_r}(F)} ## and each...
  19. David Wallace

    Interview for Engineering Class

    Can an Engineer briefly answer these questions for me? Its an assignment for my Principles of engineering class. Interviewee name: Interviewee’s specific degree: Interviewee’s place of employment: Interviewee’s email address Please describe your engineering field. What is your current job...
  20. E

    Schools Did anyone ever failed a physics class in college?

    I did horrible in my first 2 tests in physics (electric and magnetism). But when I read the book, I understand everything that it is saying. I understand the derivations, the explanations and the theories. I also did good on the homework that the proffesor gave us. But when it came to the...
  21. Y

    Courses What physics class should I start out with?

    Hi everyone. I am currently studying at a community college to attain a degree in Computer Science. I eventually will go on to get a Bachelors in Computer Science therefore will require a semester or two of University Physics or Physics for Engineers depending on which University I attend. I am...
  22. Z

    Cooperative Threads: Inner Class Problem

    Hi, I am trying to create an array of 20 threads to perform addition of 20 elements of two arrays. I have created an inner class. I don't know if my inner class syntax is correct or not. My code is:public class Question{ static int [ ] input1 = new int[20]; static int [ ] input2 = new...
  23. N

    Dirac notation for conjugacy class

    Is the RHS of the conjugate relationship Ad(g)x = gxg-1 from the Lie algebra equivalent to: <g|λ|g> In the Dirac notation of quantum mechanics? I am looking at this in the context of gluons where g is a 3 x 1 basis matrix consisting of components r,g,b, g-1 is a 1 x 3 matrix consisting of...
  24. T

    Interfacing with uCs class geared toward simple physics experiments

    Hey guys, So this is what actually made me join today. We are taking a interfacing class were most of us students don't even know how to code. However, I currently work in one of the research groups under the professor who is running the class, he gave me the assignment to figure out what parts...
  25. Y

    Programs Phd one class at a time? Going back for another Bachelors?

    So I know some school out their will gladly take my money from me, but my question is can you pursue a phd in engineering while working full time, by just taking one class at a time? That is what I'm currently doing for my masters degree, and wondering if it's even possible for a phd. I know...
  26. S

    I Pinwheels for Wind turbines? In class, pinwheels proved most

    In class, of all the shapes we tested, the pinwheel won in the total amount of current and voltage, power generated. (used a regular fan and blew a bunch of different blade designs) Question is, why don't we see pinwheels designs for turbines? Where else can I look for turbines designs? Thanks.
  27. A

    Programs Peer online degree programs, No in-person class -- Good idea?

    Hello all, I just had a few questions about online degree programs and was wondering if they can be done/are worth it. First let me explain my situation as to why I want to do online school as opposed to a brick-and-mortar school. I'm currently in the military and as you can imagine its pretty...
  28. Kanad

    What is the relationship between wavelength and compression in sound waves?

    Just a quick question. Wavelength is defined as the distance between two crests of a wave, so in a sound wave, is the wavelength the distance between two compressions.
  29. whitsona

    Class Making a T.E.A. Laser-- we have questions....

    I run a Maker group for teens in Florida at the Pensacola MESS Hall. We are building a T.E.A. Laser powered by a Wimshurst machine along the lines of a Rimstar project we found on YouTube. But, we have some questions about the laser it will produce: (1) I read that the TEA Laser has high...
  30. A

    Studying Supplementary book for intro signal processing class

    The required textbook for my intro signal processing class is "Signal Processing First" by James McClellan. So far I like the book quite a lot because the author does a good job to explain the concepts clearly. However I feel like the book doesn't provide enough practice problems. I just want to...
  31. O

    Other Does a NP in a Pass/No Pass Class Impact Grad School Admissions?

    Hey there everyone! First post here, sadly on a bad note. So I'm currently a second year physics major and I'm really trying to aim to get into a top 20 physics grad program but I just received my grades back from this last semester and I actually did pretty well! However, I found out that I...
  32. Zack K

    Admissions AP class didn't run this year for my school

    Hey guys and gals. So it's the end of the school year and I chose one of my courses to be AP physics 11 since physics is the career I want to pursue. Unfortunately the course didn't run because not enough people signed up and it's freaking me out. Should I take the May AP exam and self study...
  33. Z

    Attributes without type in Class Diagram

    Hi, I am using a book for studying UML. It shows attributes without any data types: dataReceived isPrepaid number: String price: Money What is the data type associated with above two i.e dataReceived & isPrepaid & what is their visibility (i.e publc /private). Some body please guide me. Zulfi.
  34. MidgetDwarf

    Studying Do People Actually Read The Notes They Take In Class?

    I am curious to know whether or not people on this forum read/review their notes taken in lecture? I have never reviewed notes taken in class. I do quite well in my classes. I do ask questions, participate in lecture, and always go to office hours. I do write lectures notes, but it seems that it...
  35. D

    Which Science Courses Should I Take? Physics Major, Last Year.

    Physics major. Last year. Should I A. Take calculus three during he next semester AT MY home institution and take computer science during this summer at a community college. Or B. Take calculus 3 this summer and take Theory of Probabilty next semester at my home institution. Let hear some...
  36. T

    Find TX turns ratio and 'class' questions?

    Hi, Just made a small thought experiment on the train, haven't really thought about it in depth. I was just wondering, if I created the above scenario (open circuit secondary and a voltmeter), would I get a voltage (assuming there is a difference in turns for primary and secondary)? Neglecting...
  37. jedishrfu

    New Book Lab Girl -- Building a World Class Lab Cheaply

    ARS Technica reviewed the book Lab Girl about overcoming funding issues to build a world class lab and about being a woman scientist in today's world: http://arstechnica.com/science/2016/05/how-two-determined-scientists-built-a-world-class-lab-out-of-radio-shack-parts/
  38. W

    MHB Creating Objects within a Class

    Working on a project here - I've got the classes [MINUS Billing] defined and, as far as I know, meet the requirements for the constructors, accessors, and mutator functions. My problem lies with the Billing class. It asks me to create an athlete and trainer object inside the billing class but...
  39. rtd

    B Parallex Method: Struggling in 11th Class?

    iam in class 11th iam suffering from a great difficulty to understand parallex method , inspite of book's example
  40. G

    I Star Radius & Mass from Spectral Class, B-V, Luminosity

    I have a data set of 120k star systems that I'd like to import into a project, and, while it has a lot of useful infomation, I'd like to display these stars in a visual fashion. This means that I need to figure out the radius, when zoomed into the star system, and its mass, to simulate objects...
  41. T

    MHB What is the proper way to write a unit test for addInventory() in C++?

    I got one correct for my code...what i am missing...any tips or guide? Write a unit test for addInventory(). Call redSweater.addInventory() with parameter sweaterShipment. Print the shown error if the subsequent quantity is incorrect. Sample output for failed unit test given initial quantity is...
  42. Prof. 27

    Program Bug: Programming Class

    Homework Statement So, I'm getting two blocks of zeroes in my console output from this program. After much effort (and stack exchange) I'm still unable to get it working. Could someone point me to a solution? Mod note: Added code tags Homework Equations #include<iostream> #include<iomanip>...
  43. FallArk

    MHB How to make this nested class work?

    So, I was asked to make a program that will calculate my own grade, and it is required to use subclasses inside a class. main is posted below and cannot be changed: int main() { Grade gradeMe; gradeMe.getExercises(); gradeMe.getClickers(); gradeMe.getLabs(); gradeMe.getTraces()...
  44. FallArk

    C/C++ How to Implement a Game Using Class in C++?

    Main is posted below and cannot be modified. Still need to fill out the functions needed, only this time I need to use class. int main() { int uRow = 0, uCol = 0; int oRow = NUMROWS - 1, oCol = NUMCOLS - 1; bool win = true; int move = 0; Board board; board.initialize()...
  45. P

    Physics Do physicists make enough to be middle class?

    I don't really care about money that much but i would still like to live comfortably and afford a house
  46. G

    Courses Random Signals Class: Advice for EE Student

    Hi All, Looking for Advice on taking Random Signals Class in the summer, I am EE student, Is it very difficult? very challenging or demanding?. I have taken classes in the summer in a community college and I have done OK(B), however I am a little unsure about this one. I work full time and have...
  47. E

    Crankshafts, which class of lever

    For those that are familiar with the 3 classes of lever (and the fact that all simple machines are fundamentally either a lever or an inclined plane) I have a question regarding rotational levers such as in a crank shaft. It seems to me that a crankshaft could simultaneously be considered more...
  48. ramzerimar

    Digital Systems class for a MechE

    Hey people, I need some help, preferably from the Electrical Engineers... Classes start next month and I'm stuck deciding some electives to take during my third mechanical engineering semester. Here's the thing: I decided to take some electives from the EE department so I have a good basis to...
  49. C

    What to do about physics class

    I had a thread on here ( I don't understand physics ) and completely used it as a rant. Well since then I've taken precautions on losing temper and understanding physics. Forging to play on my strengths, I combined my interest in learning about great white sharks and using physics to make it...
  50. R

    Failing a Class? Advice for Physics/Math Major

    Ok, so this is really weird. I am a second year physics major at a decent university. My GPA at the moment is not steller (3.3). I think I totally bombed my lower division linear algebra midterm, and I might (a big maybe, because I am confident that I could pass this class if I put my 110%...
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