AAPT Abstract Archive

Abstract Information

  Session: Tools to Support the Conceptual Understanding of Magnetism and Quantum Mechanics
  Paper Type: Contributed
  Title: Leveraging the Eyeball in Relativity: Fast Running Clocks
  Meeting: 2017 Winter Meeting: Atlanta, Georgia
  Location: N/A
  Time: 3:30PM
  Author: Joseph O. West,, Indiana State University,
812-237-2037, Joseph.West@indstate.edu
  Co-Author(s): Nathaniel Shanklin,
  Abstract: All observers, whether inertial or not, who share a location must agree about what they see as a reading on (and can take a picture of) any third clock in the universe. The arrival of the photons that make the image is a well-defined event. In a two-dimensional variation of the classic Twin paradox we focus on what the accelerated twin actually sees (or records as video) that will explain why she sees the inertial twin age quickly, when inertial observers traveling along any leg of her motion with her would measure and record that her twin’s moving clock runs slowly. Students are intrigued by, but often overwhelmed by the list of measurements that observers do not agree on: slow asynchronous clocks; length contraction; and order of events. Working from knowledge based on what the observers must agree on is a useful tactic for helping students.
  Footnotes: None
  Presentation: JWest BE06 Fast Running Clocks.pptx

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