Three exact rows keep luminosity over distance square fixed. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Matched luminosity and distance keep flux fixed

The pinned luminosity and distance change together. The rendered distance square is recomputed, and the output flux stays fixed.

F=422=1F={4\over2^{2}}=1
Flux row oneThe rendered distance square recomputes the flux.luminosity=4 Wdistance=2 mdistanceSquared=4 m^2flux=1 W/m^2

Matched luminosity and distance keep flux fixed

The pinned luminosity and distance change together. The rendered distance square is recomputed, and the output flux stays fixed.

F=932=1F={9\over3^{2}}=1
Flux row twoThe rendered distance square recomputes the flux.luminosity=9 Wdistance=3 mdistanceSquared=9 m^2flux=1 W/m^2

Matched luminosity and distance keep flux fixed

The pinned luminosity and distance change together. The rendered distance square is recomputed, and the output flux stays fixed.

F=3662=1F={36\over6^{2}}=1
Flux row threeThe rendered distance square recomputes the flux.luminosity=36 Wdistance=6 mdistanceSquared=36 m^2flux=1 W/m^2