What is Generation: Definition and 362 Discussions

A generation is "all of the people born and living at about the same time, regarded collectively." It can also be described as, "the average period, generally considered to be about 20–⁠30 years, during which children are born and grow up, become adults, and begin to have children." In kinship terminology, it is a structural term designating the parent-child relationship. It is known as biogenesis, reproduction, or procreation in the biological sciences.
Generation is also often used synonymously with cohort in social science; under this formulation it means "people within a delineated population who experience the same significant events within a given period of time". Generations in this sense of birth cohort, also known as "social generations", are widely used in popular culture, and have been the basis for sociological analysis. Serious analysis of generations began in the nineteenth century, emerging from an increasing awareness of the possibility of permanent social change and the idea of youthful rebellion against the established social order. Some analysts believe that a generation is one of the fundamental social categories in a society, while others view its importance as being overshadowed by other factors including class, gender, race, and education, among others.

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  1. C

    DC generation back during Edison

    DC generation back during Edison... Hi all, As most EE's know, back in the late 1800's, there was a debate on how electricity should be generated and distributed. Edison was the advocate of distributing DC electricity (since he owned all the appropriate patents) while Westinghouse and Tesla...
  2. I

    Langevin dynamics random force term generation algorithm

    Hi, Can anyone tell me an algorithm to generate the stationary Gaussian distribution R(t) with \langle R(t) \rangle = 0 (zero mean) \langle R(t) R(t')^{T} \rangle = A \delta(t-t') , A = 2 \gamma k_B T m (autocorrelation) ? What I just wrote is from the Wikipedia article "Langevin...
  3. L

    Can Software Automatically Create Tree Diagrams from Research Paper References?

    Hello everyone! Quick question, anyone know of any computer codes that will take in a long list of block data linked to other lists of block data and will create tree diagrams? My specific problem is for documents (research papers) that reference other papers and so on. If not, should I...
  4. A

    Improving a Galaxy Generation algorithm

    Hello there, I'm developing a 4x Space Opera game. For my galaxy generation algorithm I'm using an improved version of the "Accrete" one, which I'm sure some of you may have heard. It generates fairly believable planets. Rocky ones are placed in the inner system, while gas giants in the outer...
  5. S

    Electricity generation without using magnet

    would like to ask, is that possible to generate electricity without using available electric and magnet? is that if we don't have magnet, we wouldn't have electricity? could the positive or negative field be gathered without using the magnet?
  6. R

    The Dumbest Generation? - 8 Reasons Explained

    i read an article in the boston globe about this being the dumbest generation due to all the amenities of the digital age. the author contends that our great technology, instead of making youth brighter, has had the opposite effect. for example, he says that students use the internet not to...
  7. T

    The Physics Involved in Coal-Fired Generation of Electricity

    Hi, I'm new to this forum. I'm doing a self-taught course on physics and I've been given a research topic of coal-fired generation of electricity. I'm supposed to answer the following questions: 1. An explanation of the physics involved in the energy production, including the application of...
  8. L

    About thermoelectric generation

    Hi all, i was trying to use a thermoelectric board to generate electricity from a presistently hot surface. I wonder if there are any effective ways to boost the power generated? I tried to use a heat sink on the cool side of the board to maintain the temperature difference, but the effect is...
  9. P

    Maximizing Atmospheric Water Generation: Efficient and Sustainable Solutions

    Hello everyone. I have searched the forum and didn't find a discussion about atomospheric water generation anywhere so far. If you know of a better place for this post, please let me know. There are several companies that claim to extract water from the atmosphere. Does anyone know how to...
  10. V

    Exploring the Vortex Flow: Properties, Generation & Behaviour

    Hi please explain the vortex flow the vortex flow properties the vortex flow Generation the vortex flow behaviour Ryan
  11. R

    Transfer function generation tool

    Dear experts, I'm thinking if there are any free tools available for download which are capable of generating transfer functions based on a drawn amplifier circuit?
  12. L

    How to Construct an Ozone Generator Using a Discharge Tube?

    Ozone Generation (Help required) I am working on the project of "Ozone generation". Generation of ozone is done using discharge tube working at around 6KV. But the source from where I got the details of the project doesn't provided the information on the construction part of it. Please...
  13. DaveC426913

    Mechanical electricity generation

    I was just thinking last night about the generation of electricity. Are there any mechanical forms (as opposed to chemical or solar or other) of electricity generation that are not ultimately dependent on permanent magnets? If we had no permanent magnets, would we have any way to generate...
  14. Simfish

    Generation of isomorphic fields by separate algebraic elements

    So this sentence kind of confuses me: "On the other hand, if \alpha is a root of x^3 - x + 1, then \beta = \alpha^2 is a root of x^3 - 2x^2 + x - 1. The two fields Q(\alpha) and Q(\beta) are actually equal though if we were presented only with one of the two polynomials, it might take us some...
  15. I

    Solar concentrated power generation (~5kW)

    I want to look into the feasibility of manufacturing "dirt cheap" solar powered electricity generators for small businesses and households in sunny third world countries. MARKET IDEA Small electric generators of any kind are obviously uneconomic compared to a central grid. But vast rural...
  16. P

    Maze generation algorithm for specified parts

    I am an undergraduate student studying mechanical engineering. We are doing a project called the labyrinth cutter, we're constructing a piece of artwork consisting of a a gantry connected to a cutter head. The cutter is supposed to cut out a labyrinth to a piece of music. I decided to use the...
  17. LydiaAC

    Generation and recombination in stationary state

    I know that in a semiconductor in thermal equilibrium generation and recombination are equivalent. This is obvious from continuity equation since in thermal equilibrium there is no time derivatives nor spatial gradients. However, I have read that in "stationary state" generation and...
  18. T

    EM Waves: How Do They Get Generated?

    I read that em waves get generated by oscillating and/or accelerating charges. I am confused on how this occurs. Doesn't this violate energy conservation? Say 2 charges( a +& a -) are separated by a certain distance. So they have potential energy. Then you let them go. The potential energy is...
  19. M

    Is a Theory Generation Program possible?

    Since many problems in physics are proving difficult, would it be possible to create a theory generator? It would be set to focus on one problem, like quantum gravity. It would be fed experimental results and goals and then be set free to evolve theories that produced those results. Has this...
  20. C

    Raising a generation of Really Bad Readers?

    In another thread, ZapperZ wrote something which reminded me of a concern I have harbored for some time: I have noticed--- or think I have noticed--- a steady decline in the reading and writing skills of PF newbies who appear to belong to the juvenile cohort, biologically speaking. Many...
  21. M

    Mathematica Power generation in Mathematical city

    Mayor of a mathematical city promised that electrical energy will be free for their future citizen, because they will consume no energy for electrical power generation! He said;” in our power plant, the generators start working with a little prime mover and produce a lot of electrical energy.”...
  22. S

    Re: Microbiology Hwk Problem, Calculating generation time

    Calculate the time it will take to increase the cell number from 10^4 CFU/ml to 10^8 CFU/ml assuming a generation time of 1.5 hr. 2=e^ut where t is the generation time...solve for u. x=xo*e^ut where t is time For the 1st equation: ln2=lne(ut) ln2/t=u ln2/1.5=u u=0.46 l/hr For...
  23. C

    Mass Balance & Waste generation

    Hello everyone! So I'm working on constructing a simple mass balance for a cake. I didn't have any problems doing that, but I was asked about waste that is generated in the process of making the cake. Is there really a waste generated in this kind of process? I've also been asked to...
  24. W

    Can There Be a Fourth Generation of Charged Leptons in the Standard Model?

    here I come with a question, maybe stupid. everyone knows about electrons, muons, taus. Is a heavier charged lepton impossible to exist? why does SM deal with three generation of particles (each consisting in a charged lepton, a neutrino plus two quarks), and not more? thanks everyone.
  25. J

    Idea for clean Power Generation

    This came to me last night in a dream. I was wondering if anyone here can validate whether or not this idea is realistic or just nothing more than a dream? It may not be new but I haven't seen it anywhere else. I put together a simple drawing to explain it. See the link below. If anyone else has...
  26. A

    Generation of polarization entangled photons

    Hi, What crystal do I need to generate polarization entangled photons? I read BBO (beta-BaB2O4) crystal are needed but when I call the engineers at commercial companies and mention the term "entangled photons" it goes way over their heads and they just say they don't make this crystal. I...
  27. P

    Torsion Modules & Finite Generation: Investigating the Connection

    Homework Statement Does a torsion module M imply M is cyclic? Or does it imply M is finitely generated? I think cyclic implies torsion module. What about the reverse? The Attempt at a Solution I think there is a connection but don't see it.
  28. mbrmbrg

    Induced emf generation problem

    Homework Statement In Figure 30-52 (see attached), a metal rod is forced to move with constant velocity v along two parallel metal rails, connected with a strip of metal at one end. A magnetic field B = 0.370 T points out of the page. (a) If the rails are separated by 26.0 cm and the...
  29. R

    Electricity generation through crystals

    Hi, You can be sure that the method that I'm going to propose is of no commercial significance. Anyway, I'd like to know why. Set up(regardless of dimensions):- place two permanent magnets with like their like poles closest to each other in a linear tube and at the end of the tube...
  30. mheslep

    Pros and Cons of Fusion Power Generation

    Can anyone please suggest a comparative pro/con review of the various fusion approaches for power generation? In those approaches I'd include: tokamaks, stellarators, spheromaks, pinches (Z, focus, etc) -ICF laser, ion beam -Other inertial electrostatic Beam-beam FRC ? Obviously the available...
  31. H

    Conservation of Lepton Generation Number

    Homework Statement "Discuss the evidence for the law of conservation of lepton generation number. What is the evidence that neutrinos of different generations are distinct?" [8 marks] Homework Equations N/A The Attempt at a Solution I understand the concept of lepton generation...
  32. G

    Thermo question - final mass/entropy generation

    I think I may have posted this in the wrong forum earlier :\ Homework Statement An insulated and initially empty 0.7m^3 tank is connected by a valve to a line flowing air at 50degreesC and 200kPa. The valve is opened until the tank is filled, and then the valve is closed. The insulation is...
  33. G

    Thermo question - final mass/entropy generation

    Homework Statement An insulated and initially empty 0.7m^3 tank is connected by a valve to a line flowing air at 50degreesC and 200kPa. The valve is opened until the tank is filled, and then the valve is closed. The insulation is then removed from the tank, and a 20degreeC heat sink cools the...
  34. T

    How Does Rotor Diameter Affect Wind Power Output?

    Ok, doing a project at the moment and this is one of the issues I have to overcome; The information I have researched is as follows: If this is the case then a 88m diameter rotor should generate 2400kW? But the below diagram from the same page shows a 80m diameter rotor generates 2500kW...
  35. C

    C/C++ Free UML-Based C++ IDE for Code Generation

    Hi, Does anyone know of any free IDE that can generate C++ code from "drawing" in UML?
  36. N

    Generation of gold, silver, copper elements

    "Generation" of gold, silver, copper elements Since gold, and silver, and copper are all elements, I am a little confused - are they generated, or is there already only so much of each in the Earth, period? I know I found some data on Wikipedia that indicated that the various elements can be...
  37. B

    Second generation leptons muon & tau as quantum excitiation of electrons?

    Second generation leptons muon & tau as quantum excitiation of electrons? We know that in the hydrogen atom, the levels of the electron are quantized n=1, n=2, n=3 which can explain the ryderg constant and photon emission spectrum. the electron can be explained by a quantum wave function, and...
  38. B

    Since second and third generation fermions are unstable and spontaeously decompose

    Are they really fundamental? I am under the impression a fundamental particle would be "Stable", i.e first generation fermions. Could second and third generation fermions be composite particles of first generation fermions? Specifically, since the 2nd gen lepton- muon decomposes rapidly into...
  39. B

    Sudden ceasing of energy generation

    I always wondered what would happen if the sun suddenly stopped doing energy generation. i know that it would us 8.5 minutes to find as limited by the speed of light. or perhaps 10 million years to find out as that is how long it would take a photon to travel from the core to the surface...
  40. R

    Exploring Generation 0 Matter in Our Universe

    Hello, I'm not an expert, hardly a novice, in physics but still had some thoughts which might be worth shooting at. The stable matter of our universe consists mostly of matter made of electrons and up/down quark based particles (generation 2), which is described in the standard model. The...
  41. Astronuc

    News New Nuclear Power Generation in the US

    New Nuclear Power Generation in the US Announced! I posted about this in the Nuclear Engineering Forum, but this may signal the "Nuclear Rennaisance" in the US, so I'm repeating here for discussions on energy policy rather than technology...
  42. C

    Exploring Sun's Energy Generation: Could It Power Our Future?

    hi, the way that sun generates energy is really impressive. as human we are trying to simulate the similar process, however there are two vital problems we have to overcome: 1: the necessary temperature for fussion: about 40,000,000 k! 2: the containment of the plasma.what do you think, could...
  43. S

    Question of Sound Fusion Power Generation

    1.with the hot and cold fusion under experiment level now, would power from sound fusion provides equal or more power and economic value if it has been successfully researched? 2. what is the difficulty faced in building a commercial sound fusion generator? 3. Future of sound fusion...
  44. F

    Power generation and distribution

    i'm a lil confused bout whether we need the voltage and current to be out of phase or its something we just can't avoid..?
  45. C

    Feasibility of ocean wave electrical power generation

    Rather than clutter the FEG thread, here's different idea along the same lines of renewable electrical power generation. Featured on "Discoveries This Week" on Discovery channel, the reps from this firm claim they can generate the power needs of CA from a 100 sq mile installation offshore, and...
  46. ShawnD

    The past generation is responsible for today's obesity problem

    Right now, my parents are angry at me because I won't eat with them. I'm just not hungry. I had a big breakfast and I haven't done any physical activity all day, so I have no need to eat more at this time. That doesn't matter though, they're still angry and being dramatic because I won't eat...
  47. S

    Wind Power Generation: Calculating Output from 30mm Turbine

    I am looking to design a few ‘wind powered’ gadgets, on a very small scale. I am struggling to calculate the power generated from a turbine of about 30mm diameter. I understand that the number of coils surround the armature has an obvious effect on the generation, but was wondering if there was...
  48. P

    Power generation via thermal differences

    As part of a science project, my professor is having us come up with an original way of producing electricity, with an emphasis on new frontiers and space travel. Here's what I came up with. It occurred to me there must be a way to exploit the temperature difference between the base of a...
  49. R

    Home Power Generation - Can You "Sell" Energy Back to the Grid?

    Hi, I am from the uk and very interested in home power generation. I am aware that there is a system that you can install in the home which will 'sell' excess power back to the grid if for example you are running a wind turbine which produces more electricity than your home requires...
  50. S

    Fourth Generation Nuclear Weapons

    See http://www.arxiv.org/abs/physics/0510071" excellent paper on the latest technology research on using tiny pellets of DT to yield explosions in the 100 ton range. Also includes brief but illuminating discussion of earlier nuclear weapons, from an international standpoint.
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