2.3.49 - Plane polarisation

Understand what is meant by plane polarisation.

Use - plane polarisation to connect the rule to the data and decision in the question.

This matters because - plane polarisation determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - plane polarisation to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Plane polarisation is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.