#### Sentence Examples

• Dn, dorsal nerve.
• Hence the total flux through the surface considered is - {(dV i /dn l)-}-(dV 2 /dn 2)}dS, and this by a previous theorem must be equal to 47radS, or the total included electric quantity.
• The electric force outward from that point is - dV/dn, where do is a distance measured along the outwardly drawn normal, and the force within the surface is zero.
• Hence we have - dV /dn = 4lra or a = - (1 /47r) dV /dn = E/42r.
• (22) where dV/dn means differentiation along the normal, and v stands d 2 d 2 d2 for the operator a x2 - P dy2 -{- D.