Question

what are dielectric loss

Answer 1

Dielectric loss quantifies a dielectricmaterial's inherent dissipation of electromagnetic energy (e.g. heat). It can be parameterized in terms of either the loss angle δ or the corresponding loss tangent tan δ.

Answer 2

Dielectric loss definition, the loss of power in a dielectric caused by the loss of energy in the form of heat generated by an electric field. 
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