PhET Progress Report

Sam Reid

Nov 15, 2007

An online version of this report is available here.

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

Last week’s report is available here

Translation Utility

· Initial work on adding translations without recompiling new code.

· Testing of the translation utility

· Experiment with Unicode for non-native locales

· Credits are now internationalized

· Upcoming: Collaborate with John to integrate with website properly

Rotation

· Latest version

· Performance improvement

1. Found and removed unused graphics

2. Identified problem in timer implementation or usage that can cut the frame rate in half, started resolving this problem

· Bugfixes

· Fixed the linear acceleration vector to be non-radial for constant angular acceleration

· Remaining Work

· Also, need to fix the linear acceleration vector to be non-central for constant torque

· Need more time to understand and resolve the frame rate problem mentioned above; does this exhibit problems on other sims?

One Laptop Per Child

· Posted report on usage of PhET sims on XO laptop here

Translation

· Discussion of how it would be possible to run English version of a simulation while running on a non-English computer

· What do we want the default behavior to be?

Upcoming

· Rotation/Torque (see above to-do’s)

· CCK

o Organize requested fixes

o Bugfixes

o Some reorganizing

· Work on generalizing Rotation/Torque chart library to be useful in Moving Man, Force1D, Ramp (with Chris)

· Identify and implement a mechanism for adding translations without recompiling the simulation for Java sims (continuation) (with Chris)