The discussion revolves around the concept of permittivity and its relation to dielectric materials, specifically focusing on how dipoles within a dielectric become polarized in response to an electric field and the implications of this polarization on the electric field within the material.
The discussion is active, with participants seeking clarification on the alignment of dipoles in relation to the applied electric field and the resulting net electric field. Some guidance has been offered regarding the behavior of dipoles, but there is no explicit consensus on the interpretations being explored.
Participants express uncertainty about the alignment of dipoles and the conditions under which the net electric field becomes zero. There is an acknowledgment of the complexity of dipole interactions within a dielectric medium.
"Permittivity is a physical quantity that describes how an electric field affects, and is affected by, a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Thus, permittivity relates to a material's ability to transmit (or "permit") an electric field."
...thereby reduce the electric field inside the material.
berkeman said:Look at the electric field between the separated parts of the dipole... doesn't it go the opposite way of the overall field?
negitron said:Right. In what direction do they align, in terms of polarity, with respect to the applied external E field?
negitron said:Okay, and when you have one electric field oriented in one direction and another in the opposite one the net field is...?