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In addition to the above, the J key will jump the magnet horizontally to the opposite side.

Image 1 (above): initial screen for Faraday's law.



Image 2 (above): Magnet receives keyboard focus. 4 arrows appear around the magnet to indicate the possible directions to move.

Note: the vertical dashed line is for illustration purposes only.



Image 3 (above): The J key is pressed to initiate a jump action. A placeholder appears on the other side to indicate the destination of the magnet.


Image 4 (above): This is a diagram showing the behaviour of a jump depending on the position of the magnet at the time jumping starts.

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Concern - the behaviour may be unusual and require a few uses before understanding how jumping works. The placeholder seen before jumping is intended to help with the ambiguity. Other things that should help: good labeling and descriptions for the action.



Image 5 (above): The J key is released and the magnet begins moving horizontally in a straight line to the other side of the play area. The speed in which it moves is the default speed (exact speed TBD). This sketch also includes a faster and slower jump speed (see below).


Image 6 (above): the magnet continues moving horizontally.


Image 7 (above): the magnet has reached its destination, and the focus remains on the magnet. The direction arrows return to indicate possible directions the magnet can move in.



Image 8 (above): Jump movement speed can be faster by pressing J+Modifier.


Image 9 (above): The magnet is moving quickly across.



Image 10 (above): magnet has stopped.


Image 11 (above): The jump movement can be slower by pressing J + 2nd modifier key.

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