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

    I 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.
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