PhET Progress Report

Sam Reid

Sept 13, 2007


An online version of this report is available here.

Here’s a pie chart representation of the time distribution.



·         Latest Version

·         Drag brake force character to apply brakes

·         On radius graph, display (constant) brake radius

·         Added a graph and type-in box for applied force radius application point

·         Added record/playback for 4-dimensional applied force value

·         Added type in text area for applied force

·         Fixed: Can apply force to empty part of the empty ring merry-go-round

·         Remaining Work



·         Latest Version

·         Simulation model is paused when laser blows up, model restarts when the user changes the intensity of a beam or resets the entire simulation

·         Fixed: "Laser blew up" message erroneously stays in front.  Simulation is reset when the user changes a beam rate.

·         Notes on last week’s requests

·         New parameter settings/slider ranges?

·         Results from profiling on slower machines?


States of Matter

·         Collaborated with John to initialize States of Matter sim



·         Code style – discussed & standardized style conventions

·         Repository – cleaned up phetgraphics demo for future usage

·         QM Paper – read and discussed Sam M’s paper


Upcoming Work

·         Rotation/Torque

·         Collaborate with John on States-Of-Matter

·         Licensing issues/Meet with Kate Tallman

·         GUI for translation system

·         CCK