In the absence of anything else, the live and neutral wires are exactly the same. Both carry current. You need a circuit, and that means a circle. The two wires form a circle, and in that circle is the power supply (usually a transformer on a pole or in a green case on the street) your load, and probably a switch. The two wires are just the two parts of a circle or loop at any given point.
Reflux is a distillation technique involving the condensation of vapors and the return of this condensate to the system from which it originated.he more reflux provided for a given number of theoretical plates, the better is the column's separation of lower boiling materials from higher boiling materials. Conversely, for a given desired separation, the more reflux is provided, the fewer theoretical plates are required.
In that context, reflux refers to the portion of the overhead liquid product from a distillation column or fractionator that is returned to the upper part of the column as shown in the schematic diagram of a typical industrial distillation column.