254 citations
- Arizona State UniversityUS18 papers
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physics.ed-ph2018
Finger Paint and Physics: A simple demonstration of Circular Motion and Conservation of Energy
Sarah Phan-Budd
It can be a challenge to come up with simple demonstrations of circular motion and conservation of energy. One such demonstration consists of a large exercise ball, off of which a…
physics.ed-ph2018
Notes on pulse-width modulation appropriate for a sophomore-level electronics or programming class
Nathan T Moore
Pulse-width modulation is a nice way to create pseudo analog outputs from a microcontroller (eg, an Arduino), which is limited to digital output signals. The quality of the analog…