1. Maxima and Minima is the loops and nodes of current or voltage on an antenna or transmission line.
2. It is the lobes and nulls in a directivity pattern.
3. It is the bright and dark bands in a visible light interference pattern.
4. In radar reflections, It is the regions of localized maximum and minimum intensity.
5. It is the study and solution of maximum, minimum, and inflection points on the curve of a function.
See also, MAXIMA, MINIMA