The normal component of an electric field near a convex shaped object of zero net charge and dielectric constant ε embedded in a vacuum with an asymptotically uniform electric field has an upper bound (ε/ε0)‖E0‖, where ε0 is the vacuum permittivity, and E0 is the asymptotic field. This limit may be closely approached in the vicinity of regions of high surface curvature.

This content is only available via PDF.
AAPT members receive access to the American Journal of Physics and The Physics Teacher as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.