• The free end of the dipole is now of opposite sign .
• The bending strains of the upper surface are opposite in sign to those of the lower surface.
• The free end of the dipole is now of opposite sign .
• The bending strains of the upper surface are opposite in sign to those of the lower surface.
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012