PhET Progress Report

Sam Reid

July 5, 2007

An online version of this report is available here.

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

Rotation

· Posted 2 new revisions, click here for latest version

· Added a second character

· Improvements from motion subproject

o Improved handling for time series

o Corrected physics for offset derivatives

o Improved playback/record panel

· Added multiple timeseries for acceleration, velocity (x, y + magnitude)

· Remaining work:

o Exact solution for circular motion

o Minor UI fixes

o Minor bugfixes

o Handling multiple objects on a single graph

o Handling multiple series on a single graph

o Side view/projections?

o Spin the wheel and release? (or just in torque sim?)

Launchable JAR files

· Wrote utilities for automatically constructing launchable JAR files for all flavors of a simulation

· Simulations that have multiple flavors prompt the user with a pop-up dialog

· Fully functional, but needs some cleanup & reorganization

Energy Skate Park

· Posted 9 revisions, latest version is 2.02.11

· Improved support for reset

· Moved grid lines y=0 to the ground

· Fix in the physics that caused the skater to gain a boost of energy or fly away

· There are a few known deficiencies in the dynamics system, but they rarely cause problems, so we have avoided this work.

· How did Mindy’s interviews go?

Installer

· Discussion of per-sim installers for offline use

· Feasibility test with launch4j (produces windows executables only)

· Let’s decide on a simulation-for-offline-use type for AAPT

License

· Discussion of compatible-licensed image media

· Many clip art collections are for personal use only

· Should we hire a graphic artist?

· Should we search for compatible-licensed image/clip art collections?

Build File

· Performance improvements

· Fixed a URL error

Upcoming Work

· Rotation/Torque for AAPT(see above)

· Simulations for offline-use

· build/deploy/test all simulations for the main site?

o Fixed “won’t run under 1.6 failure” for SDPM

o Many sims have improvements

o Many sims have fixed a known bug (swing thread)

· Licensing issues/Meet with Kate Tallman

· GUI for translation system

· CCK

o remove old CCK, upgrade to CCK DC Only version after some small fixes