Got new modem. Good. Just a new mobile and Internet host renewal and ill be totally 21st century.
Welcome onescone and lapa.
Been to a music festival. Actually put my shorts on

Happy times.
Stumbled on some mom references about methods of moments and plane waves, cool
Bloch wave – MoM method
From Wikipedia, the free encyclopedia
See also: Photonic crystal and Metamaterial
Bloch wave – MoM is a technique for determining the band structure of triply-periodic electromagnetic media such as photonic crystals. This technique uses the method of moments (MoM) in combination with a Bloch wave expansion of the electromagnetic field in the structure. This approach is very efficient in terms of the number of plane waves needed for good convergence and is analogous to the spectral domain MoM method commonly used for analyzing 2D periodic structures such as frequency selective surfaces (FSS). In the latter case, the electromagnetic field is expanded in terms of a plane wave spectrum (Scott [1989]). In both cases, the field is expanded in terms or a set of eigenfunction modes (either a Bloch wave in 3D or a plane wave spectrum in 2D), and an integral equation is enforced on the surface of the scatterers in each unit cell. In the FSS case, the unit cell is 2-dimensional and in the photonic crystal case, the unit cell is 3-dimensional.