| 174 | Select the "Fitpage1" tab that contains the sphere model. |
| 175 | |
| 176 | Find the section labelled "Polydispersity and Orientational Distribution" |
| 177 | |
| 178 | Click the "Off" radio button and the polydispersity section should disappear |
| 179 | |
| 180 | Find the section labelled "Set Instrumental Smearing" |
| 181 | |
| 182 | Click on the "Custom Pinhole Smear" radio button and a data entry box should appear. |
| 183 | |
| 184 | Enter a value for the percentage dQ/Q that is applied to the model - start with a value of 10. |
| 185 | |
| 186 | Try various values of dQ/Q ranging from 1% to 50%. |
| 187 | |
| 188 | What effect does this have on the scattering curve? |