Recent content by JonDrew

  1. J

    What Does Schrödinger Convey in the Epilogue of What is Life?

    I just read Schrödinger's "What is life?" and was very confused by some of the things he said in his epilogue, some help understanding it would be great! What does he mean by the "plurality hypothesis"? I think he means that idea that multiple consciousnesses could make up one consciousness...
  2. J

    What is the difference between a contour plot and a bifurcation plot?

    On Wolfram Alpha it will offend give you a contour plot, and it has similarities to a bifurcation plot with respect to a variable and a parameter. What is the difference between a contour plot and a bifurcation diagram?
  3. J

    MATLAB MATLAB trouble with reshape and random matricies

    Figured it out. It took me a while though, sadly. for c. I used cMat= linspace(1, 100) cMat= reshape(cMat,10, 10) and d. I used fMat= ceil(rand(5,3)*10); mod(fMat, 4) And I really appreciate the help I am learning it through the MIT slides alone, I find I get hung up on little things like...
  4. J

    MATLAB MATLAB trouble with reshape and random matricies

    I am trying to learn MATLAB with MIT OCW and I am running into some trouble. It says as an assignment: c. cMat = a 10x10 matrix where the vector 1:100 runs down the columns (use reshape). so 1 11 21...91 2....92 . ..... 10...100 is the matrix I am trying to make and another...
  5. J

    Where do you get your physics news and publications?

    I am looking for both journal sources and news sources. I seemed to be set with recommendations for science news websites although suggestions are still welcome. Now I'd really like recommendations to find important journal articles pertaining to the fields I am interested in for graduate...
  6. J

    Where do you get your physics news and publications?

    I had never given this website a faire shot actually, perhaps because its homepage appears very clustered and complex. Never the less, I've been looking through it over the past day or two and some of the articles I've read have corresponded very nicely with the material I am learning in a lot...
  7. J

    Where do you get your physics news and publications?

    I don't understand how the sci.physics group works it seems like there are a lot of bad articles and suggestions there, as you implied. I am more looking for a website more geared toward recent physics publications, I still haven't found anything like that.
  8. J

    Where do you get your physics news and publications?

    My knowledge of good physics news websites is lacking. As of now, I regularly check PF, physicsworld.com, scientific american and NSF but that is it. What I am looking for is a website which basically sorts through publications for me and shows the most interesting physics/math publications...
  9. J

    What is the definition of a 'true vector'?

    I was worried about that, it is possible that I am just confused on an over simplifications then. Thanks micro.
  10. J

    What is the definition of a 'true vector'?

    In my class notes my professor defined a true vector as a vector which does not depend on origin placement. Once he defined it he went on with an example of how a vectors magnitude is conserved in two different coordinate systems. So my question is what is the definition of a true vector? Is...
  11. J

    Question about Leibniz's notation for derivatives

    Wait, so if dx is infinitely small and it is multiplied into a function wouldn't that make the function also infinitely small? Leibniz notation is something that has been baffling me lately, I think I am going to have to read the Silvanus Thompson book you suggested.
  12. J

    The Theoretical Minimum, Released today, January 29th 2013

    ^^! I am soo excited not only for this book, plus the ones that are planned for the future but, that you just commented on my thread, it just made my day! I now sincerely apologize for not giving you credit as an author of the book in the title of this thread. If this was not happening over the...
  13. J

    The Theoretical Minimum, Released today, January 29th 2013

    Suskind gives Landau credit for the title of the book, theoretical minimum. And from the following quote he does say that his plan is to do more books, sort of: "One of the main inquiries [I get] is whether I will ever convert the [online] lectures into books? the Theoretical Minimum is the...
  14. J

    The Theoretical Minimum, Released today, January 29th 2013

    I apologize I do not know what you mean by Marion or Goldstein CM classes, do you mean a differential equations based Classical Mechanics class?
  15. J

    Cross Product of a Constant Vector

    To cross two vectors you can simply take the determinate of the matrix they make. As far as I know this method works for all constant and variable vectors which have a determinate that exist.
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