
| Model No. 279 | FA: 16 |
| Description: The non-integrabel pfaffian problem ydx - xdy + k dz = 0. The surface elements are realized through carton discs; they are not summable to surfaces. Model designer: Dr. Hermann Brunn, München. | |
| RE: | Category: Oscillations and waves |
| RU: J 3 = A VII 41 vgl. A VII 45 | |