What is Revolution: Definition and 410 Discussions

In political science, a revolution (Latin: revolutio, "a turn around") is a fundamental and relatively sudden change in political power and political organization which occurs when the population revolts against the government, typically due to perceived oppression (political, social, economic) or political incompetence. In book V of the Politics, the Ancient Greek philosopher Aristotle (384–322 BC) described two types of political revolution:

Complete change from one constitution to another
Modification of an existing constitution.Revolutions have occurred through human history and vary widely in terms of methods, duration and motivating ideology. Their results include major changes in culture, economy and socio-political institutions, usually in response to perceived overwhelming autocracy or plutocracy.
Scholarly debates about what does and does not constitute a revolution center on several issues. Early studies of revolutions primarily analyzed events in European history from a psychological perspective, but more modern examinations include global events and incorporate perspectives from several social sciences, including sociology and political science. Several generations of scholarly thought on revolutions have generated many competing theories and contributed much to the current understanding of this complex phenomenon.
Notable revolutions in recent centuries include the creation of the United States through the American Revolutionary War (1775–1783), the French Revolution (1789–1799), the Spanish American wars of independence (1808–1826), the European Revolutions of 1848, the Russian Revolution in 1917, the Chinese Revolution of the 1940s, the Cuban Revolution in 1959, the Iranian Revolution in 1979, and the European Revolutions of 1989.

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  1. P

    Writing the equations of a surface of revolution

    Homework Statement Write the equations of a surface of revolution with axis OZ: A) the Torus obtained by a rotation of a circle x= a + b*sin(u), y= 0, z = b*sin(u) 0 < b < a B) the pseduosphere obtained by the rotation of a tractrix x= a*sin(u), y=0, z= a*(log(tan(u/2) + cos(u))...
  2. J

    Combined velcoities of earth's rotation and revolution + sun + galaxy

    hey since the Earth turns around itself , turns around sun, sun turns around galaxy, galaxy is in movement (or maybe orbiting something bigger, who really knows ?) Well with all these movements, our velocity must be close to c ? thus , what is galaxy turns around ..., which turns around...
  3. S

    Volume of a Solid by Revolution

    Homework Statement Hi, the next problem I thought it was easy...and I really think it is, but I haven't come with the right answer :S. I compare the answer in an internet page of problems and all it says is "wrong"... The problem is the following: Find the volume of the solid obtained by...
  4. marcus

    A minor Immirzi revolution (Corichi, Ghosh, DeBenedictis)

    A minor Immirzi scuffle (Corichi, Ghosh, DeBenedictis) Andrew DeBenedictis and two friends just came out with a paper that will stir up Immirzi controversy. http://arxiv.org/abs/gr-qc/0702036 Already there have been series of papers on the one hand by Corichi et al and on the other by Ghosh...
  5. M

    Volume of Revolution: y=5, y=x+4/x; x=-1

    Homework Statement "The region bounded by the given curves is rotated about the specified axis. Find the volume of the resulting solid by any method." y=5, y=x+4/x; about x=-1 Homework Equations Upon plotting it I decided it would be best to use the shell method. I'm not sure how to...
  6. G

    Calculating Surface Area of Revolution for a Rotated Curve

    Homework Statement Find the area of the surface obtained by rotating the curve about the x-axis: y=cos 2x, 0<=x<=pi/6 Homework Equations Surface area about the x-axis = Integral of 2pi * f(x) * sqrt(1+[f'(x)]^2) dx The Attempt at a Solution I think I set up my integral correctly, so...
  7. D

    Volume of Revolution: Solve Assignment Question

    The question I need to solve for an assignment is as follows: Find the volume of the solid that is obtained by revolving the region R around the x-axis. I figured that the volume would just be the integral of pi R^2 dx, so that would just be pi R^2 x, but that is not the answer. I suspect I...
  8. G

    Advice on volume of solids NOT of revolution?

    Anyone have any advice for finding volumes of solids that are not solids of revolution? I have a much more difficult time starting these kinds of problems compared to revolving ones.
  9. C

    Calculating Volume of Revolution: Bounded Figure Rotated about y = -1

    What is the volume of the figure bounded by y = 2x - x^2, y = 2x, x = 2, and rotated about the line y = -1. Is this the correct integral? \[ V = \pi \int_0^2 {((2x + 1)^2 - (2x - x^2 + 1)^2 } )dx \] Thank you for your time.
  10. J

    Why Doesn't a Satellite's Radial Velocity Increase as It Revolves?

    Why doesn't a satellite's radial velocity (falling toward the Earth's center of gravity) increase as it it revolving --- I understand why its tangential speed stays the same but what is stopping the satellite from accelerating in its fall -- there is no air resistance up there. In other words...
  11. P

    Exploring the Atomic Model Since Quantum Revolution

    Hello, I have a few questions concerning what the atomic model currently "looks like" since the quantum revolution. I know that, since the wavefunction, electrons are in probability "clouds" and I know they are standing waves. So this would mean, technically speaking, that the electron...
  12. T

    Revolution Volume by Cylinder Shells

    Rotate about x-axis the region enclosed by y=e^x, y=1/x, x=1 and x=2. I can do the problem with the rings method but I don't how to even set up the integral to solve by the shells method. Help? Thanks
  13. C

    Angular Quantities: Calculating Revolutions

    Hey, I ran into a few things about angular quantites and am a little confused on finding the number of revolutions something such as a tire would make. Would the distance traveled divided by a circumference of a circle equal the number of revolutions? I was finding that there are equations that...
  14. L

    Dance dance revolution oh yeah i rock at that game

    to any and all the player
  15. phoenixthoth

    What is the structure of the Ultra Power Space?

    If U [i.e., set theory] were to be equippable with a vector space type morphology...Prolly more of a module than a v.s.. Yes, a field over a ring, perhaps, if that's possible... dim(U)...: 0. emptiness 1. isolation 2. expansion 3. containment 4. transition 5. hyperspace 6...
  16. C

    Volume Calculation for Solid of Revolution with Rotating Curve and Line y=x

    Hello I have a question here which I've been thinking for quite sometime. And I am still very puzzled. It goes: Find the volume generate by the curve y=lnx rotating about the line y=x. Within the interval of x [4,10]. I would like to know the approach to this problem as I have been asking...
  17. U

    Calculating Volume of Solid Revolution around x = 1

    Find the volume of the solid generated by revolving the region bounded by y = 2x - x^2 and y = x about the line x = 1 Ok, so I can solve this if it were revolved around the y-axis, it would be: \pi \int_0^1 (x)^2 - (2x - x^2)^2 dy If I have to revolve it around x = 1, what do I need to change...
  18. L

    What is the formula for finding the surface area of a surface of revolution?

    Hello can someone please give me some advice on applying the area of a surface revolution. I never seem to plugin the right formula. In the formula S(from a to b) 2pi f(x)**sqrt(1 + f'(x)^2) I never know what to put for f(x)** some times the answers have just x and sometime it has the...
  19. S

    Area of a Surface of Revolution

    I'm having more Calculus troubles here. Here's the problem: Write the definite integral that represents the area of the surface formed by revolving the graph of f(x) = 81 - x^2 on the interval [0, 9] about the y axis; evaluate the integral to determine the surface area. By knowing that f(x) =...
  20. S

    Area of a surface of revolution

    9x=y^2+18 between 2&6..so y=(9x-18)^1/2 and dy/dx= \frac{9}{2 \sqrt{9x-18}} so S = 2 \pi \int_2^6 \sqrt{9x-18} \sqrt{1+ \frac{81}{36x+72}}dx If this is all right..then I am stuck :grumpy: Any help?
  21. K

    Quiet Revolution: Can Our Wind Turbines Power Themselves?

    http://www.quietrevolution.co.uk/ I understand these things can spin, but what I'm questioning is whether they can really produce enough power to even power themselves? I mean, there have got to be a few hundred if not thousand LEDs on each one, as well as a control circuit to control the...
  22. K

    Nintendo's Revolution: Wii - What Do You Think?

    http://revolution.nintendo.com Nintendo recently announced the official name of their next console, previously knows as Revolution... and it's going to be called... Wii. So, what do you think? I'm curious... :rofl: If you're not familiar with revolution, er, Wii, it's...
  23. D

    Volume of Revolution: Finding % Filled in Bowl

    I have a question about finding the volume of a hemisphere, I've got that bit sorted but the next bit asks, if the bowl is partially filled what percentage of the bowl is filled. I think i understand the method but i need to find the x value when the bowl is filled 4.5cm of a hemisphere...
  24. M

    Volume of Solids of Revolution: y=sqrt(6x+4) & y=2x

    Find the volume formed by rotating the area contained by y=sqrt(6x+4), the y-axis and the line y=2x about the y-axis. Set up, but do not evaluate the integral. First I graphed it, then did the "washer" method of finding the area of the circle formed, and found that the radius is...
  25. Hootenanny

    Calculating the Volume of Revolution for e^x + 1 on x-axis

    If the finite region bounded by the curve y = \text{e}^{x} +1 , the y-axis and the line x = \ln2 is rotatated around the x-axis by 360^{\circ} show that the volume of the solid formed is: \frac{\pi}{2} (7 + \ln4 ) I did the intergral and got: V = \pi \left[ (\text{e}^{4} + 2\text{e}^{2}...
  26. G01

    Volume of Revolution Problem: Finding the Volume of a Solid of Revolution

    Find the volume created by revolving: y=x^2 +x - 2 and y=0 about the x axis. y=x^2 +x - 2 intersects the x-axis at -1 and 1 so those are the bounds of integration. the radius of the figure = -( y=x^2 +x - 2 ) so: V = - \pi \int_{-1}^1 (x^2 + x - 2)^2 dx After integrating that I get...
  27. O

    Calculating Surface of Revolution for a Torus | Math Problem Solution

    Hello, I am trying to find the surface area of a torus. I know there are equations for finding this but in this problem I must use a surface of revolution. Given in the problem is the distance to the center of the torus is 12 and the radius of the torus is 2. By using the equation...
  28. J

    Darwin's Theory of Natural Selection: A Scientific Revolution

    I know zip about biology, but I know a little physics. Before Einstein's general theory of relativity challenged it, the prevailing scientific theory of gravitation was Newton's theory. In the minds of most physicists, the issue was resolved in favor of Einstein's theory as a result of an...
  29. J

    News Rice urges Revolution of Reform at UN

    Rice urges "Revolution of Reform" at UN Saturday, September 17, 2005 "The time to reform the United Nations is now," she said. "And we must seize this opportunity together." Sounds just lovely. So, how can that be accomplished? With empowerment. And the UN, the whole that is the sum...
  30. O

    News Thoughts on a second American Revolution

    Why i think this IS possible: Classes The polarization of classes in this country has become an increasingly large issue; http://www.census.gov/hhes/www/pove...04/pov04hi.html poverty was 12.7% in 2004, i don't have 2005 figures. So it is evident that the middle class is disappearing, which...
  31. W

    Could someone explain undulation per revolution?

    Could someone explain undulation per revolution? I would prefer to have a mathematical function defining it also if possible. Can any explain ONE also? .
  32. dduardo

    Nintendo Revolution Controller

    http://www.1up.com/do/newsStory?cId=3143782 This is quite a departure from the standard controller. Instead of pressing a button to swing a sword, you actually swing the controller.
  33. A

    Volume of Solid Revolution: Find x=2 Rotation

    Could someone please explain how to do this question. Find the volume of the solid formed when the area between y=√x and y=x^4 is rotated about the line x=2. I know how to do this when it's rotated about the x and y axes, but I'm not sure how to do it with a different line. Thank you.
  34. L

    Stunning Revolution in Physics or dumb Newspaper?

    Ok, I was looking through technocrat and I saw a link to this article which claims, that physicists have not only succeeding in slowing down, but also in speeding up the speed of light. I assume it is actually talking about the speed of light in the medium or something, but the article doesn't...
  35. S

    Revolutionizing Nanotube Production

    Nanotube revolution? http://www.nature.com/news/2005/050815/pf/050815-8_pf.html 10 metres * 5 centimeters, 50 nanometers thick ribbon per minute can be produced.
  36. J

    News What is the Potential Outcome of the Growing Disparity in America?

    I had the opportunity the other day to watch a most enlightening program broadcast by UCTV. The one-hour program was called "How Unequal Can America Get Before We Snap?" presented by President Clinton's former labor secretary Robert Reich. "Inequality of income, wealth, and opportunity in...
  37. W

    Exploring the Mysterious History of 360 Degrees in a Revolution

    Why was the number '360' chosen to be the number of degrees in a complete revolution? How far back does the number go?
  38. Z

    Ps3,x-box360 or nintendo revolution

    If you are getting one, what would it be. Im getting the new xbox. simply because of halo 3
  39. J

    Keplers laws, weight, and revolution of planet

    A planet has mass Mplanet = 4.46e24 Kg and a radius Rplanet = 5900 Km Some space explorer lands on the equator of this planet and he weighs 161lbs, whereas he weight 185lbs on Earth. He journeys over to the North pole and he finds himself weight only 95% of what he did at the equator. Now the...
  40. C

    Volume of Revolution: R around Y-Axis

    R is bounded by the curves y=(x-1)^2 and y=2(x-1). Axis of revolution: y-axis. How am i supposed to do this. I know how to do the washer method, I know how to apply it when it is revolved arround the x-axis, but I don't know how to do it when it is the y axis. Can anybody explain to me the...
  41. Integral

    How is Bimolecular Revolution Influencing Space Travel Technology?

    Is the Human Genome project complete? How is the current technology advancing in comparison to the predictions made in Visions
  42. RadiationX

    MATLAB Matlab & solids of revolution?

    matlab & solids of revolution?? Does anyone know if MATLAB can graph solids of revolution by just using the information contained in the integral form of the problem? :confused:
  43. S

    News Can Anarchism provide a solution to the flaws of Democracy?

    There isn't a thread about this yet? Honestly people... http://www.eurasianet.org/departments/civilsociety/articles/pp032605.shtml http://www.antiwar.com/justin/?articleid=5301
  44. Ivan Seeking

    Robot Revolution: Artificial Chromosomes to Feel Lusty

    Why does this sound like the beginning of something really scary? http://www.guardian.co.uk/life/science/story/0,12996,1403780,00.html
  45. D

    Surface Area (Surface of Revolution) - Discrepancy

    So this question has been bothering me for a very long time... but only recently have I mustered up courage to register to ask it. Before though, let me draw a parallel analogy, so you can see where I'm coming from. When you take the volume of a region enclosed by one or more functions...
  46. C

    Gender Representation on TV: An Unfinished Revolution?

    I'm in India, I don't know about other places. I can't seem to find a channel broadcasting programmes and commercials without a woman. It's not that I don't want women on TV, but its the way they potray women that I don't like. Is this what Men and women who fought for equal rights for women...
  47. H

    Software for Calculating Volumes of Revolution on Linux, Mac, Windows

    I need software that can calculate volumes of revolutions, the only requirement is that it runs on any of the following: * Linux (i386) * Mac OS X * Windows XP (i386) Like calculate the volume when tan x is rotated around the y-axis with upper boundaries 0.2 and lower boundraries 0.1.
  48. Jameson

    Methods of Solving Solids of Revolution - Jameson

    Ok. I just need someone to explain the methods for me, if it's not too much trouble. I know you have the shell method, disk method, and washer method. I am taking AP Caclulus BC in high school. I want to know if all of these methods are useful of if one of them is more important. Thanks...
  49. iansmith

    G-Wash: Launch Your Clean Car Revolution!

    http://g-wash.com/index.php?pageid=content_launch&id=192
  50. S

    News Is the Revolution in 'World of Evil' a Mix of Humor and Darkness?

    The Revolution will be televised, it won't be pretty, but it'll have an awsome sound track!
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