Physics Quiz: The Standard Model

by Eric Drexler on 2014/04/16

The Wikipedia page on the Standard Model currently includes the diagram below:

  1. What do the arcs represent?
  2. Which of the arcs is incorrect?
  3. Extra credit, Wikipedia history department:
      How did one correction lead to both errors?
  4. Added: Where is a second arc missing? (This makes question 3 ambiguous.)

17 April update: added question 4 after contemplating weak interactions and checking the literature

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