PhET Progress Report

Sam Reid

January 7, 2010

This report covers Dec 22-Jan 7.

I’ll be working reduced hours until my dissertation defense (early April/late March).

This report is also available online.

To discuss: #2076 putting sims as applets

This is not worth the effort for now.

Add something to the FAQ about how to embed JNLP link with a screenshot

CCK

Fixed speed issue during slider manipulation

Fixed layout of control panel so that vertical scroll bars don’t appear by default

Contacted a Numerical Methods expert regarding time step too large problem in CCK; he suggests using an implicit method. I’ll work with him more after the 13^th.

Self-Driven Particle Model

Tested that it works good enough for 2010 Q1 redeploy, created 2 new tickets

Created many unfuddle tickets based on bug reports and requests

Networking

Discussed with Kathy

Energy Skate Park

Fixed performance on reset problem, see #2042

Scala

Tested building and running a few sims against Scala 2.8 Release Candidate 6

Documentation

Met with Wendy regarding code documentation

Reviewed and commented on NP’s paper

Upcoming high priority work (see Unfuddle for detail):

rotation Fix values and units for ladybug revolution

moving-man Legacy moving man should behave properly after time is up

rotation Add a slider to the torque graph on the Moment of Inertia tab

circuit-construction-kit Add a warning message to problematic CCK circuits

rotation needs to be resolved before 15^th

moving-man can be done later

Extra Exclamation points in CCK, what is causing them?

Chris is fixing

CCK:

· To Do:

o #1909 Asymmetric capacitors during charging with r=0

o #1839 High frequency oscillation when r=0

o #1911 Charts cover up non contact ammeter

o #1828 Electrons bunch up in pairs

o Meet with mike on these issues

Motion series

· To Do

1. Thirteen issues remaining in to-do document

2. How to handle sim name change? See #1948

1. We should probably fix translation utility to support strings located elsewhere.

3. Internal cleanup and refactoring for motion-series

4. Proposed solution for new versions of ramp & forces-1d & moving man:

5. Update Forces-1d with a dialog that points to the new version, ramp too

6. Ramp needs a new name #2054

7. Moving Man

Phetcommon

· To Do:

1. More improvements of PlayArea # 1907

Eating & Exercise

· To Do

1. Port motion-series controls to Java

2. Avoiding work on E&E during code freeze

3. Noah: What is the probability we will want to use temporal charts in this sim, possibly in the future?

4. Implement changes as per Noah’s mock-up (see email)

Piccolo

· To Do

1. #1821 update piccolo

1. Sims need re-testing with recent pswing changes

2. PSwing needs improvements for removing components, #1874

1. Any other fixes we want in before 1.3 release?