What is sin[itex]_{2}[/itex][itex]\theta[/itex]min in regards to XRD

[Qrux]

Hi i have 2\theta and have found sin_{2}\theta from that but what does sin_{2}\thetamin refer to?

i attached the graph I'm trying to fill out, the information i have is; the peak list with 2\theta the height of the peak in counts, FWHM Left, d-spacing and the relative intensities of the peaks

anyone know what is meant by sin_{2}\thetamin

 

[HallsofIvy]

First, you are writing it wrong. It is NOT "sin_2\theta_{min}", it is (sin^2(\theta))_{min}. The important thing is that the "min" is not on the \theta, it is on the entire function.

That is, it means the minimum value of sin^2(\theta) over all possible values of \theta.