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- Fresno State author is exactly "Roger Key"
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Timing pulsars: An exercise in statistical analysis and the scientific process
A lab activity for teaching students the fundamentals of statistical analysis by timing pulsar periods is described. The electromagnetic pulses of pulsars have been mapped to sound and uploaded on social media channels, allowing students to “listen”…
Catastrophic cancellation in elastic collision lab experiments
Error analysis consumes much of the focus in introductory physics labs. Catastrophic cancellation is a spike in error that occurs when subtracting two measurements of roughly equal magnitude. Often termed loss of significance or subtractive…
Data-driven decision making in an introductory physics lab
A new lab activity for first-year introductory physics teaches students to use data to drive decision-making in science and engineering processes. Using the popular PDCA (plan-do-check-act) cycle, students manufacture a small sample of ball bearings…