The red sphere is the charge and the small white sphere is the location of the calculated electric field. This stuff is in 3-D. If you right click with the mouse you can rotate things around.

DR. O. HEAVISIDE has investigated (NATURE, April 19) the slow motion of a charged conducting sphere through a uniform electric field, in a direction parallel to the electric force of the field ...

Since I know that the electric field is spherically symmetric around this point charge, I know the direction of the electric field on this imaginary sphere. Better yet, I know the magnitude is ...

Hollow structured materials are promising electrodes for energy storage, but still suffer from mechanical and chemical degradations in operation. Here, the authors show that upon high-rate ...