A Positively Charged Cylinder Surrounding A Negatively Charged Line
Is Loaded by this HTML
<figure class="product"> <iframe width="210" height="210" allowTransparency="true" src="http://vizit.github.io/catalog/positiveCharge/index.html"> </iframe> <figcaption>The charges exactly balance so the field goes to zero at the edge of the cylinder.</figcaption> </figure>