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2020-10-19

astr-1101

  • Moving from history/tools to objects in the Solar System
    • Starting with the Sun
  • Easier to make small stars than big stars
  • Albert Einstein
    • E=mc2E = mc^2
    • Matter and energy are the same thing
      • Doesn't make much sense on a large macroscopic scale
      • Makes more sense on nuclear scales
    • Fusion vs. fission
      • Bringing together vs. breaking down
  • Light elements (up to iron) --> get energy out of fusion
  • Heavy elements (past iron) --> get energy out of fission
  • Comparative planetology
    • Studying how planets work by comparing them with one another
  • Geological age of surfaces
    • Count craters
      • More impacts --> exposed longer
      • How long since the surface has been "swept clean" by things like lava flow or molten materials
    • Radioactive rocks
      • Measure the age of individual rocks
      • Measuring the half-life of certain elements

cpsc-1050

  • Problem solving and algorithms
  • Problem solving
    • Act of finding a solution to perplexing, distressing, vexing, or unsettled problems
  • How to solve problems
    • Understand the problem
    • Devise a plan
    • Execute the plan
    • Look back/reflect
  • Strategies
    • Ask questions
    • Look for familiar things
    • Divide and conquer
  • Computer problem solving process
    • Analysis and specification phase
      • Understand/define the problem
      • Specify the problem the program will solve
    • Algorithm development phase
      • Develop logical sequence of steps to solve the problem
      • Follow the defined steps to see if solution solves the problem
    • Implementation phase
      • Code the algorithm
      • Test the code
    • Maintenance phase
      • Fix bugs, etc.