25.1.1—The term luminosity as the total power of radiation emitted by a star

understand the term luminosity as the total power of radiation emitted by a star.

Use —the term luminosity as the total power of radiation emitted by a star to connect the rule to the data and decision in the question.

This matters because —the term luminosity as the total power of radiation emitted by a star determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the term luminosity as the total power of radiation emitted by a star to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The term luminosity as the total power of radiation emitted by a star is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.