1. choose 2nd panel then choose 1st panel, then energy level diagram slider erroneously moves up >>Could not reproduce this bug in 4.04.04-4.04.06 in either Java 1.4 or Java 1.6 2. First try to improve performance in 2nd panel, e.g. in case of no photons. <1hr for analysis >>Nearly all unnecessary computation time is taken up in phetgraphics execution. >>No easy fix for this. Best long term fix is piccolo. 3. Photons are going behind lamp control, can they go in front? >>Very difficult given the current implementation 5. Illegal argument exception on creating transparent photons >>Couldn't reproduce this 1. After the laser blows up, the sim is still using most of his processor. If he hits pause, it goes down to 15% or so. Then if he hits play it's back up to 80-100%. So the sim is still running after the laser blows up. 2. This one is related to Sam's bug that she found and a problem associated with the fact that we don't address the concept that the chamber has to be an integral number of wavelengths to work. So he will get a laser of one color (in photon view) and then move the lower energy level. It quickly builds up photons of the new color and is lasing in the new color while there are still a large number of photons of the old color still oscillating and lasing. See attached screen shot. We might want to do something simple like reset when a person moves the lower energy level while lasing. 8-24-2007 bug report from McKagan Also, I found a bug in Lasers. It's there in the old version, and no one's ever complained about it before, so it's probably not a high priority to fix, but it's worth at least documenting it. Here's how you reproduce it: 1. Get it lasing. 2. Set lower transition from photon view to wave view. There should be a big wave going. 3. Move energy level 1 up or down so that it's now lasing in a different color. The wave will immediately change color even though most of the photons in the laser are still the old color (this is a little weird, but I don't know how else it could behave, so it's probably fine). 4. Wait a few seconds and then switch back to photon view. All the photons in the laser cavity are gone! Where did they go? The wave view and the laser power meter still indicate that they're in there, but you can't see them.