# Changeset 1f058ea in sasmodels for doc/guide/pd/polydispersity.rst

Ignore:
Timestamp:
Sep 29, 2017 9:11:13 AM (5 years ago)
Branches:
master, core_shell_microgels, costrafo411, magnetic_model, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests
Children:
b76191e
Parents:
4aa5dce
Message:

resolve minor differences between the updated docs sasview and the corresponding docs in sasmodels

File:
1 edited

### Legend:

Unmodified
 rf8a2baa \exp\left(-\frac{(x - \bar x)^2}{2\sigma^2}\right) where $\bar x$ is the mean of the distribution and *Norm* is a normalization factor which is determined during the numerical calculation. where $\bar x$ is the mean of the distribution and *Norm* is a normalization factor which is determined during the numerical calculation. The polydispersity is during the numerical calculation. The median value for the distribution will be the value given for the respective size parameter, for example, *radius=60*. The median value for the distribution will be the value given for the respective size parameter, for example, *radius=60*. The polydispersity is given by $\sigma$ Many commercial Dynamic Light Scattering (DLS) instruments produce a size polydispersity parameter, sometimes even given the symbol $p$ This polydispersity parameter, sometimes even given the symbol $p$\ ! This parameter is defined as the relative standard deviation coefficient of variation of the size distribution and is NOT the same as the polydispersity