Changeset 45330ed in sasmodels for sasmodels/models/guinier_porod.py

Timestamp:

Mar 20, 2016 10:09:06 AM (8 years ago)

Author:

richardh

Branches:

master, core_shell_microgels, costrafo411, magnetic_model, release_v0.94, release_v0.95, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests

Children:

4416868

Parents:

b9f4c26

Message:

improved docs

File:

• sasmodels/models/guinier_porod.py (modified) (1 diff)

sasmodels/models/guinier_porod.py

@@ -39 +39 @@
 Note that the radius-of-gyration for a sphere of radius R is given by $R_g = R \sqrt(3/5)$.
 
-The cross-sectional radius-of-gyration for a randomly oriented cylinder
-of radius R is given by $R_g = R / \sqrt(2)$.
+For a cylinder of radius $R$ and length $L$,    $R_g^2 = \frac{L^2}{12} + \frac{R^2}{2}$
 
-The cross-sectional radius-of-gyration of a randomly oriented lamella
+from which the cross-sectional radius-of-gyration for a randomly oriented thin 
+cylinder is $R_g = R / \sqrt(2)$.
+
+and the cross-sectional radius-of-gyration of a randomly oriented lamella
 of thickness $T$ is given by $R_g = T / \sqrt(12)$.