On the left is a representation of a 4 m x 4 m space in which there is a uniform field directed down. If you choose a ball, then the field is a gravitational field. If you use a charge, the field is an electric field. On the right is a graph. You can plot six different things on the vertical axis, as a function of either x or y.
The counter has been running on this page since 8-12-2018. The number of people accessing the page since then is: