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For Teachers


Code Language Translator Run

Software Requirements


Android iOS Windows MacOS
with best with Chrome Chrome Chrome Chrome
support full-screen? Yes. Chrome/Opera No. Firefox/ Samsung Internet Not yet Yes Yes
cannot work on some mobile browser that don't understand JavaScript such as.....
cannot work on Internet Explorer 9 and below



Anne J Cox; Fremont Teng; Loo Kang Wee

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Sample Learning Goals


For Teachers



Charge Field Box and Slider

The charge of the particles can be set by inputting inside their respective field boxes
or by toggling their respective sliders.

Zero Velocity Button

Pressing this button will set the velocities of the two particles to zero.

Draggable Boxes

When the simulation is paused, two draggable boxes and texts will appear over the lines.
These boxes are draggable and allows the user to move and set the particle's initial position.
Note that you won't see this option if the simulation is playing.

Toggling Full Screen

Double clicking anywhere in the panel will toggle full screen.
Note that this won't work if the simulation is playing.

Play/Pause, Step and Reset Buttons

Plays/Pauses, steps and resets the simulation respectively.




  1. by ETDtogo 
  2. by ETDtogo 
  3.  by ETDtogo 


Other Resources


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