Corinthian order perhaps reduced in size and importance, scrolling out above the two ranks of stylized acanthus leaves and stalks ("cauliculi" or "caulicoles"), eight in all, and to notice that smaller volutes scroll inwards to meet each other on each side. The leaves may be quite stiff, schematic and dry, or they may be extravagantly drilled and undercut, naturalistic and spiky. In Late Antique and Byzantine practice, the leaves may be blown sideways, as if by the wind of Faith. Unlike the Doric and Ionic column capitals, a Corinthian capital has no neck beneath it, just a ring-like astragal molding or a
Electronic band structure structure has been generalised to wavevectors that are complex numbers, resulting in what is called a "complex band structure", which is of interest at surfaces and interfaces. Each model describes some types of solids very well, and others poorly. The nearly free electron model works well for metals, but poorly for non-metals. The tight binding model is extremely accurate for ionic insulators, such as metal halide salts (e.g. NaCl). To understand how band structure changes relative to the Fermi level in real space, a band structure plot is often first simplified in the form of a band diagram. In a