Wavenumber Wavenumber In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance. Whereas temporal frequency can be thought of as the number of waves per unit time, wavenumber is the number of waves per unit distance. In multidimensional systems, the wavenumber is the magnitude of the wave vector. The space of wave vectors is called reciprocal space. Wave numbers and wave vectors play an essential role in optics and the physics of wave scattering, such as X-ray diffraction, neutron diffraction, and elementary
The Ghost of Vermeer of Delft Which Can Be Used As a Table reworkings of historic paintings, such as several works inspired by Millet's "Angelus". Images of anthropomorphic furniture as well as crutch-like objects are common in this period of his career. The Ghost of Vermeer of Delft Which Can Be Used As a Table The Ghost of Vermeer of Delft Which Can Be Used As a Table is a small Surrealist oil painting by Salvador Dalí. Its full title is The Ghost of Vermeer of Delft Which Can Be Used as a Table (Phenomenologic Theory of Furniture-Nutrition). It makes reference to "The Art of Painting" by Johannes Vermeer, a famous seventeenth-century work