gamma field
31Jacobi field — In Riemannian geometry, a Jacobi field is a vector field along a geodesic gamma in a Riemannian manifold describing the difference between the geodesic and an infinitesimally close geodesic. In other words, the Jacobi fields along a geodesic form …
32Terrestrial gamma-ray flash — Terrestrial gamma ray flashes (TGFs) are bursts of gamma rays in the earth s atmosphere. TGFs have been recorded to last 0.2 to 3.5 milliseconds, and have energies of up to 20 MeV. They are probably caused by electric fields produced above… …
33Fermionic field — In quantum field theory, a fermionic field is a quantum field whose quanta are fermions; that is, they obey Fermi Dirac statistics. Fermionic fields obey canonical anticommutation relations rather than the canonical commutation relations of… …
34Mathematical descriptions of the electromagnetic field — There are various mathematical descriptions of the electromagnetic field that are used in the study of electromagnetism, one of the four fundamental forces of nature. In this article four approaches are discussed. Contents 1 Vector field approach …
35Vector field — In mathematics a vector field is a construction in vector calculus which associates a vector to every point in a (locally) Euclidean space.Vector fields are often used in physics to model, for example, the speed and direction of a moving fluid… …
36Compton Gamma Ray Observatory — General information NSSDC ID 1991 027B Organization NASA …
37Formation evaluation gamma ray — In the field of formation evaluation, gamma ray log records natural radioactivity emission of formation. Measurement of natural emission of gamma rays in oil and gas wells are particularly helpful because shales and sandstones typically have… …
38Electromagnetic field — The electromagnetic field is a physical field produced by electrically charged objects. It affects the behavior of charged objects in the vicinity of the field.The electromagnetic field extends indefinitely throughout space and describes the… …
39Pi Gamma Mu — or ΠΓΜ (from Πολιτικές Γνώσεως Μάθεται ) is the oldest and preeminent honor society in the social sciences. It is also the only interdisciplinary social science honor society. It serves the various social science disciplines which seek to… …
40Kappa Kappa Gamma — Infobox Fraternity letters= ΚΚΓ name= Kappa Kappa Gamma crest= founded= Birth date and age|1870|10|13 birthplace= Monmouth College, (Monmouth, Illinois) type= Social emphasis= scope= International mission= vision= motto= maxim= colors= dark blue… …
