The cross‐sectional shape of a linear concentrator in the form of a trough is provided by the parabola, a two‐dimensional curve. Similar to the paraboloid, a parabolic surface of revolution, dish ...

Parabolic reflectors or concentrators can be used to detect emissions at a distance (18). Partial Discharge: Direct, capacitive or inductive couplers (sensors) are installed on or near the cable ...