Oscillations and waves

This catgory includes models related to mathematical physics, in particular to rubric J "Differential equations, extension and oscillation processes, wave theory" and rubric K "Geometrical optics" (models 280-282).

Img(268) Real part surface with edge of regressionImg(279) The non-integrabel pfaffian problem ydx - xdy + k dz = 0
Img(280) Infinitesimal neighbourhood of a line congruenceImg(281) Infinitesimal neighbourhood of a line congruence
Img(282) Infinitesimal neighbourhood of a line congruenceImg(283) Fresnel wave surface for optic uniaxial crystals
Img(284) Fresnel wave surface for optic uniaxial crystalsImg(285) Fresnel wave surface for optic biaxial crystals
Img(286) Fresnel wave surface for optic biaxial crystalsImg(287) Fresnel wave surface for optic biaxial crystals
Img(289) Heat conduction in a stick; single sourceImg(290) Heat conduction in a stick; double source
Img(291) Periodic heat conduction in a stickImg(317) 6 spheres with the + and - regions of the easiest spherical functions
Img(318) 6 spheres with the + and - regions of Lamé productsImg(843) Picked string (violin string)
Img(844) Picked string (violin string)Img(846) Picked string
Img(847) Vibrating stringImg(850) Hammered string (Piano string)
Img(851) Hammered string (Piano string)Img(852) Impulsion transversala d'une barre elastique appuyee aux extremites et heurtee