eraser.ai source=PhET author=Amanda McGarry notes=based on original raster artwork by Sharon
Clock.ai source=PhET author=Sharon
faucet_components2D.ai source=PhET author=Mike Fowler
SimpleClock.ai source=PhET author=John B
MeasuringTape.ai source=PhET author=Bryce Gruneich notes=taken from Fluid Pressure and Flow Artwork.ai