Sign Represents

Some articles on sign, sign represents:

Appleton-Hartree Equation - Equation - Modes of Propagation
... The presence of the sign in the Appleton–Hartree equation gives two separate solutions for the refractive index ... the '+' sign represents the "ordinary mode," and the '−' sign represents the "extraordinary mode." For propagation parallel to the magnetic field, i.e ... the '+' sign represents a left-hand circularly polarized mode, and the '− sign represents a right-hand circularly polarized mode ...

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