25.2 Stellar radii

recall and use Wien’s displacement law λmax ∝ 1 / T to estimate the peak surface temperature of a star.

Use —wien’s displacement law λmax ∝ 1 / t to estimate the peak surface to connect the rule to the data and decision in the question.

This matters because —wien’s displacement law λmax ∝ 1 / t to estimate the peak surface determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —wien’s displacement law λmax ∝ 1 / t to estimate the peak surface to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Wien’s displacement law λmax ∝ 1 / T to estimate the peak surface is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

use the Stefan–Boltzmann law L = 4 πσr 2 T 4.

Use —the stefan–boltzmann law l = 4 πσr 2 t 4 to connect the rule to the data and decision in the question.

This matters because —the stefan–boltzmann law l = 4 πσr 2 t 4 determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the stefan–boltzmann law l = 4 πσr 2 t 4 to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The Stefan–Boltzmann law L = 4 πσr 2 T 4 is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

use Wien’s displacement law and the Stefan–Boltzmann law to estimate the radius of a star.

Use —wien’s displacement law and the stefan–boltzmann law to estimate the radius to connect the rule to the data and decision in the question.

This matters because —wien’s displacement law and the stefan–boltzmann law to estimate the radius determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —wien’s displacement law and the stefan–boltzmann law to estimate the radius to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Wien’s displacement law and the Stefan–Boltzmann law to estimate the radius is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.