2.3.50 - Diffraction and Huygens’ construction

Understand what is meant by diffraction and use Huygens’ construction to explain what happens to a wave when it meets a slit or an obstacle.

Use - diffraction and huygens’ construction to connect the rule to the data and decision in the question.

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

Example: apply - diffraction and huygens’ construction to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Diffraction and Huygens’ construction is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.