A fixed projection factor scales transmitted and blocked intensity. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Fixed projection factor scales the source intensity

The projection factor stays fixed. Increasing only the source intensity scales both transmitted and blocked intensity.

f=45O=50f2=32B=5032=18\begin{array}{c}f=\frac{4}{5}\\O=50f^{2}=32\\B=50\,-\,32=18\end{array}
Malus source-scaling rowThe same projection source is used in each row.projectionSource=boundsourceIrradiance=50 W/m^2projectionFactor=4/5transmittedIrradiance=32 W/m^2blockedIrradiance=18 W/m^2

Fixed projection factor scales the source intensity

The projection factor stays fixed. Increasing only the source intensity scales both transmitted and blocked intensity.

f=45O=75f2=48B=7548=27\begin{array}{c}f=\frac{4}{5}\\O=75f^{2}=48\\B=75\,-\,48=27\end{array}
Malus source-scaling rowThe same projection source is used in each row.projectionSource=boundsourceIrradiance=75 W/m^2projectionFactor=4/5transmittedIrradiance=48 W/m^2blockedIrradiance=27 W/m^2

Fixed projection factor scales the source intensity

The projection factor stays fixed. Increasing only the source intensity scales both transmitted and blocked intensity.

f=45O=100f2=64B=10064=36\begin{array}{c}f=\frac{4}{5}\\O=100f^{2}=64\\B=100\,-\,64=36\end{array}
Malus source-scaling rowThe same projection source is used in each row.projectionSource=boundsourceIrradiance=100 W/m^2projectionFactor=4/5transmittedIrradiance=64 W/m^2blockedIrradiance=36 W/m^2