Search results

  1. G

    C/++/# Optimize C++ to use for computational physics?

    Using a linear algebra library like armadillo could be a good start (uses lapack). Then you also have the nice feature of various prebuilt matrix structures and classes. Although it is fun to play with the nitty-gritty low level stuff yourself as well. One handy tips is to use optimization...
  2. G

    Why not use electricity directly instead of hydrogen

    Just to answer this. It's already being done large scale on Iceland. http://www.sciencedirect.com/science/article/pii/S0360319909001992 (sorry for barely related article, tablet and not on University network)
  3. G

    Studying Does only the application really matter?

    While this is true, it is also a debated amongst government and politicians. Which has great outcomes for funding. This prevailing view of applicability (in my country atleast) has had a negative impact on science. Answer to original question: I've always felt that engineering /applicable...
  4. G

    Python Python on Windows 7

    I would consider to dualbooth some linux distro if it is not too inconvienient, or otherwise impossible. Most people I've heard of that has tried both tell me that it is a big hassle getting most of the scientific software packages working on Windows.
  5. G

    Physics About theoretical research

    I can't really say that this reflects my own experience working on computer stuff. (Co-developing a new parallel PiC (particle-in-cell, plasma) program) We easily spend a third of the 'coding time (when we are productive) discussing problems, algorithms, alternative algorithms, test scenarious...
  6. G

    LaTeX Why use LaTeX?

    Cross referencing was horribly implemented for equations the last time I used word. Doing changes to an entire document is hard, style changes etc. You can make figures directly in latex by gnuplot (by tixz) , paste code directly from a document.
  7. G

    Open source for FE / Fluid Analysis?

    http://fenicsproject.org Open source FEM tools.
  8. G

    Norske, anyone?

    The classic Peer Gynt is also really good, if you are of a existential bent. There is at least 100 000 books and radioplays on the page. bokhylla.no (annoying to make link on tablet)
  9. G

    Norske, anyone?

    Yeah, I think most Norwegian books will be expensive due to a few publishers having a stranglehold on most of the business. And few readers per author. But there is free legal digital scan of the book here http://www.nb.no/nbsok/nb/6df08bb0b2cc088e6e400bebca76ace1?index=4#0 I realised you...
  10. G

    Norske, anyone?

    Den siste nattkrigeren, if you can get hold of it.
  11. G

    Info Request: "Latex Search Engine"?

    Detexify. You can draw symbols and you get latex code from that. http://detexify.kirelabs.org/classify.html Edit; reread and realised you were after something else
  12. G

    Cronyism and Nepotism in Job Market

    I can agree with the sentiment of your post and I've seen very few people get permanent positions without some kind of recommendation. Rather temporary positions before getting a permanent position. And I But from this passage it strikes me that you should have two great connections here, and...
  13. G

    Book on climate science

    "Global Warming: The Complete Briefing", John Houghton, 4th edition, Cambridge University Press, 2009 This is an introductory overview, written by one of the ipcc head people. It's quite nontechnical. Atmosphere, Ocean and Climate Dynamics: An Introductory Text", John Marshall and R. Alan...
  14. G

    Quick Calculus book uses Δ by itself, ex: (ln(x+Δ)-lnx)/Δ

    The author can use whatever symbol s/he wants? I've seen x +Δx, x + Δ, x+h. A book should usually be consistent in that it uses the same notation, but be used to several different notations for the same thing. Different notations usually have upsides depending on what is being discussed.
  15. G

    Trouble with parrallelizing for loop with openMP, cpp

    I will remove the if parts and do some timing tests after a weeks vacation :) This is basically exactly what I have. Can it still not happen that two threads try to update atom->sum_of_forces at the same time? I was quite confused while writing it, so no wonder it is confusing. The for...
  16. G

    Trouble with parrallelizing for loop with openMP, cpp

    In the full simulation it increases the variance of the total energy, which should be a conserved quantity, by approximately a factor 10^4 so I'm not that happy about it. But I would think that the error will decrease with a larger system. Yeah, I realized that the critical part completely...
  17. G

    Trouble with parrallelizing for loop with openMP, cpp

    Hi, I'm working on doing some slight parallelization of a for loop in the force calculation in a molecular dynamics simulation, using openMP. (probably not up for a proper MPI implementation yet) It should only need to parallelize the force loop since 90% ish of the time is spent calculating...
  18. G

    Calling All Evil Thinkers!

    A prank that sounds fun, if you have access to his computer, is to make a costum script for his keyboard that makes it so every ten'th button he presses is exchanged with another letter. So he writes a lot of small spelling errors all the time.
  19. G

    Helping other students

    Remember that your co-students can also help you in your career later. It helps to be that smart guy who helped them so much later when you ask your old contacts if they know of any openings. It should also be enjoyable to get an opportunity to talk about your subjects. I know that it's some of...
  20. G

    Engineering Engineering to Maths

    You should consider just learning python instead, it is very similar with more options and it is free. Much of the academic world has moved over to it instead of Matlab
  21. G

    Physics project for IB

    Do you know any programming? Then you could try to model something you find interesting. Movement of charges in weird electromagnetic fields, start with something straight forward. Two masses orbiting each other due to gravity, add in more objects or forces for more fun. Voltage in some...
  22. G

    Jobs involving Physics research and travel?

    Metereological stuff. Should be quite afew topics in there that necessates exotic field work.
  23. G

    Light, Heat, and Sound

    I personally think the topics are abit harder, especially optics. But as always it depends on the professor/treatment of the subjects.
  24. G

    Light, Heat, and Sound

    I have never heard of a class with that name. A paragraph on the syllabus would probably make it easier to evaluate how hard it is compared to the other ones. It sounds like a mix between transversal waves, longitudinal waves and statistical physics?
  25. G

    Yet another Physics vs Engineering dilemma (well-described, tho!)

    Most of my higher level physics classes went by the following formula: 1. Learn theory, for example how a charge moves in a magnetic field in various configurations 2. Solve the theory where possible. Solve the equation of motion where possible with math. 3. Program a computer model modelling...
  26. G

    Why Antarctica ice is fresh water

    As most people mentioned the sea ice is salty, not fresh. Fresh sea ice is more saline and since the salt gradually drains out multi year ice is much fresher. From Desalination processes of sea ice revisited, Notz and Worster, JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 114. (Bold is mine)...
  27. G

    Software in Physics Computers

    A complete LaTex installation would be nice as well.
  28. G

    Schools Oil mechanics universities

    http://www.uis.no/studies/master-s-programmes-in-english/petroleum-engineering/application-and-admission/ http://www.uis.no/studies/master-s-programmes-in-english/petroleum-geosciences-engineering/ They have the prerequisite bachelor degree's as well but those are in Norwegian.
  29. G

    Ice should sink?

    I don't see the water density becoming smaller than that in the chart you linked to, at 9 degrees the water was at the 0.9997xx area.
  30. G

    Why physics and chemistry for computer science?

    Why do you need to learn history, languages, politics and literature? No one wants a person who only knows a lot about one thing and nothing about everything else.
Top