magnon energy

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• Magnon — There is a place named Magnon in Gabon. A magnon is a collective excitation of the electrons spin structure in a crystal lattice. In contrast, a phonon is a collective excitation of the crystal lattice atoms or ions. In the equivalent wave… …   Wikipedia

• magnon — ▪ physics       small quantity of energy corresponding to a specific decrease in magnetic (magnet) strength that travels as a unit through a magnetic substance.       In a magnetic substance, such as iron, each atom acts as a small individual… …   Universalium

• Spin wave — Spin waves are propagating disturbances in the ordering of magnetic materials. These low lying collective excitations occur in magnetic lattices with continuous symmetry. From the equivalent quasiparticle point of view, spin waves are known as… …   Wikipedia

• Mass in general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …   Wikipedia

• General relativity — For a generally accessible and less technical introduction to the topic, see Introduction to general relativity. General relativity Introduction Mathematical formulation Resources …   Wikipedia

• Debye model — Statistical mechanics Thermodynamics · …   Wikipedia

• Brillouin scattering — Brillouin scattering, named after Léon Brillouin, occurs when light in a medium (such as air, water or a crystal) interacts with time dependent optical density variations and changes its energy (frequency) and path. The density variations may be… …   Wikipedia

• Neanderthal — For other uses, see Neanderthal (disambiguation). Neanderthal Temporal range: Middle to Late Pleistocene 0.6–0.03 Ma …   Wikipedia

• Neanderthal extinction hypotheses — are theories about how Neanderthals became extinct around 30,000 years ago.[1] Since their discovery, both the Neanderthals place in the human family tree and their relation to modern Europeans has been hotly debated. At different times they have …   Wikipedia

• Kromagg — The Kromaggs (also known pejoratively as Maggs and Maggots by humans), are a species of humanoid primates from the science fiction television show, Sliders . They are a technologically advanced and highly militaristic race bent on conquering all… …   Wikipedia

• Quasiparticle — In physics, quasiparticles (and related collective excitations) are emergent phenomena that occur when a microscopically complicated system such as a solid behaves as if it contained different (fictitious) weakly interacting particles in free… …   Wikipedia