Recent content by Joe_UK

  1. J

    A question about the theory of relativity

    Well I am not an expert on relativity in any way really, but the length contraction caused by the lorentz equations would only possibly alter the size of the object that you see, not what it actually "looks" like. A black star "looks" completely different to a star as light cannot escape its...
  2. J

    Electric field on a piece of wire

    As sin(\theta_{0}) is less than 1, sin^3(\theta_{0}) is a lot smaller than sin(\theta_{0}) so can basically be ignored I believe. So yes you were right.
  3. J

    What Are the Key Experiments and Theorists Behind Nuclear Fusion?

    Try http://www.iter.org/" for Inertial Confinement Fusion. These are two forms of fusion research currently being conducted. For Fision I suppose the obvious one is the bombs... Hiroshima ect ect. If you need any more information on Inertial Confinment Fusion feel free to pm me as I am...
  4. J

    Predicting Cell Movement and Shape in Conway's Game of Life

    Im not sure life has any equations as such. I am not a biologist but nobody had answered your question so I thought Id give my two cents. Life is normally governed by rules such as Darwinian Natural Selection (read " https://www.amazon.com/dp/0451529065/?tag=pfamazon01-20 "). These theories...
  5. J

    Can a 60W 120V Appliance Surpass the Max Household Current and Blow a Fuse?

    Something is wrong in those figures... From P=IV then I = P/V = 60/120 = 0.5 A. Using V = IR then I = V/R = 120/1 = 120 A. So something isn't right there... J
  6. J

    First order perturbation theory

    The potential of an electron in the field of a nucleus is: -Ze^2/(4 Pi Epsilon0 r) r > r0 -Ze^2/(4 Pi Epsilon0 r0) r <= r0 where r0 is the fixed radius of the nucleus. What is the pertubation on the normal hydrogenic Hamiltonian? Calculate the change in energy of the 1s state to the first...