Recent content by jim421616

  1. jim421616

    Help with uncertainty calculation

    This is from an online quiz. I thought the answer would be 0.6/5 = 0.12 0.12*0.6 = 0.072 ∴ 7.2% but apparently this is wrong. Can anyone help me out please?
  2. jim421616

    Terminal Velocity of a Falling Parachutist

    Also, 25g = 250, not 2500.
  3. jim421616

    Undergrad Can Compton scattering increase the energy of photons?

    I've read (in Hagai Netzer's book The Physics and Evolution of Active Galactic Nuclei) that "Comptonization in the [black hole's accretion] disk atmosphere can increase the energy of some photons..." I thought Compton scattering could only decrease a photon's energy. What am I missing?
  4. jim421616

    How Can a Background in Physics Enhance Studies in Astronomy?

    Hi folks. I'm an ex-teacher (high school Physics) who is now studying towards an MSc in Astronomy. I'm interested in physics, astronomy, and computer science.