CampiEl_01_0

The application visualizes the two-dimensional electrostatic field generated by groups of positive and negative electric charges, positioned in a Cartesian plane.

As soon as activated the application generates n (=4) charges in an (x,y) plane.

Charges are generated with a random value between -100 and +100.

The unit of electric charge is, in absolute value, equal to the charge of an electron or a proton (1.6021e-19 Coulomb).

The charges are placed in the (x,y) plane with randomly generated coordinates in an interval of a few millimeters around the origin (0,0).

The coordinates are indicated on the upper and left side edges of the screen, the unit of measurement is [m]. In addition to the numerical coordinates, the coordinate grid is displayed.

The electrostatic field is displayed with 4 distinct colors representing:

1) Colors from yellow to black: Positive electric field with absolute value less than 1.0 [N/C] [Newton/Coulomb]

2) Colors from cyan to black: Negative electric field with absolute value less than 1.0 [N/C]

3) Colors from red to black: Positive electric field with absolute value greater than 1.0 [N/C]

4) Colors from blue to black: Negative electric field with absolute value greater than 1.0 [N/C]

All colors can be changed by selecting "Colors" on the application's main menu.

The values of the electrostatic field, given the arrangement of small charges (between -100 and +100 elementary charges) arranged on a plane a few millimeters away, are almost everywhere extremely small in absolute value, therefore the absolute value zones prevail of the range less than 1.0 [N/C].

Only near the charges are the areas with a field value greater than 1.0 [N/C] observed.

To make the areas with a field value greater than 1.0 [N/C] larger it is possible to increase the number of charges concentrated in the groups.

In addition to the electrostatic field, the application displays the "trajectories" that hypothetical unitary mobile charges (with a value of 1.6021e-19 Coulomb) would travel when leaving the groups of fixed charges.

From each group of fixed charges m (=10) trajectories are generated.

The trajectories are colored:

1) Light pink: trajectories exiting the groups of positive charges

2) Light green: trajectories exiting the groups of negative charges

All colors can be changed by selecting "Colors" on the application's main menu.

In summary the application displays:

- electrostatic field

- number and sign of groups of fixed concentrated charges

- trajectories of free unit charges exiting the fixed charges

- Cartesian coordinates

See instructions for other informations.