PhET Progress Report

Sam Reid

June 12, 2007

An online version of this report is available here.

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

Energy Skate Park

http://www.colorado.edu/physics/phet/dev/energy-skate-park/2.01.13/

· Fixes for E vs. T graph

· Experimented with renderers E vs. T graph (right click graph for options)

· Fixes for record/playback controls

· Fixes for “return skater”

· Misc bugfixes

· Near completion of this draft

Interleaved Series

· Discussed correct layering while maintaining high-performance for nonscrolling time series graphs

· Discussion with Chris & John; no quick & elegant fix so far

· Need to decide tradeoff between:

o Time spent to implement

o Robustness, elegance & reusability

o Runtime Performance

o Visual Correctness (layering)

Ideal Gas

http://www.colorado.edu/physics/phet/dev/ideal-gas/3.07.00/

· Fixed: "molecules stick to right wall and pass through left wall" bug in reversible-reactions module.

· Fixed: sim fails to start sometimes (due to threading issue)

· Internal restructuring of build information/structure

· Posted to main site (all 3 related sims in English & Spanish)

· What about “diffusion sim” aka Molecular Beam Experiment?

http://www.colorado.edu/physics/phet/dev/ideal-gas/3.05.05/diffusion.jnlp

Moving Man

· Finished internationalizing

· Improvement of translation template

· Produced a version that starts up with only position chart visible

· Published Slovak version

http://www.colorado.edu/physics/phet/dev/moving-man/1.16.06/moving-man_sk.jnlp

Translation

· Discussion with Chris and John

· Handling of native character sets (for Slovak case)

Clock Control Panel

· Internal restructuring

Motion

· Cleanup

Concord

· Embedded phet simulations in activities:

http://itsidiy.concord.org/activities/101/sail_jnlp/8/1

· Other activities available here (choose physics)

http://itsi-portal.concord.org/preview/

Self-Driven Particle Model Tutorial

· Added code & license permission to the repository

Discussion

Buildable Source Distribution

http://www.colorado.edu/physics/phet/dev/temp/phet-src-0.0.1.zip

· Good time for a discussion of buildable source distribution?

· Benefits and drawbacks?

Piccolo

· Piccolo agreed with our “wish list”, and expressed interest to keep code consolidated rather than split, gave permission to write to their codebase

Upcoming Work

· Bug in Piccolo drag handling

· Rotation/Torque (with John)

1. Time Series

2. Physical model (with correct offsets in derivatives)

3. Charts (with correct layering for data series?)

· Energy Skate Park?

· GUI for translation system

· Convert Moving Man, Force 1D, Ramps to use new motion code?

· CCK

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