The electrostatic energy of a polar crystal ( i . e ., a crystal with a net dipole \ mathbf { p } _ { uc } in the unit cell ) is conditionally convergent, i . e ., depends on the order of the summation.
32.
Another possible reason for the hat's cone shape, as well as the horns of the male priests that the Wiccan goddesses also wore, is that pointed objects, such as a church spire or a minaret, can make electrostatic energy, which can help the witch have psychic abilities.
33.
The form of the electrostatic energy used here assumes that the charges due to the protons and electrons in an atom can be represented by a single point charge ( or in the case of parameter sets that employ lone pairs, a small number of point charges .)
34.
"Every time you drive to a gas station, gasoline vapor and air mix and create a flammable region, " said C . James Dahn, an expert on static electricity at Safety Consulting Engineers in Schaumburg, Ill . " And there's enough electrostatic energy in human bodies to ignite the gas-vapor mixture ."
35.
These two integrals for electric field energy seem to indicate two mutually exclusive formulas for electrostatic energy density, namely \ frac { 1 } { 2 } \ rho \ phi and \ frac { \ varepsilon _ 0 } { 2 } E ^ 2; they yield equal values for the total electrostatic energy only if both are integrated over all space.
36.
These two integrals for electric field energy seem to indicate two mutually exclusive formulas for electrostatic energy density, namely \ frac { 1 } { 2 } \ rho \ phi and \ frac { \ varepsilon _ 0 } { 2 } E ^ 2; they yield equal values for the total electrostatic energy only if both are integrated over all space.
