Intensity Ratio Denominator Control Scan - Biophysical Instrumentation VIII: X-Ray Crystallography and Reciprocal Evidence Step by Step

A fixed high peak still needs the exact cited denominator source. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

A fixed numerator still needs a cited denominator

The high peak is fixed at intensity 36. Each row changes the low peak source before the ratio is accepted.

\text{ratio}=I_{\text{high}}/I_{\text{low}}

Three denominator sources make three exact ratios

The ratio changes because the cited low-intensity source changes.

\begin{array}{c|c|c}I_{\text{high}}&I_{\text{low}}&\text{ratio}\\36&9&4:1\\36&4&9:1\\36&16&9:4\\\end{array}

The final row gives nine to four

High intensity 36 over low intensity 16 gives ratio 9 to 4.

36:16=9:4