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This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...
ICRF – (astrophysics terminology) International Celestial Reference Frame, a coordinate system based on radio sources used to define the locations of objects in the sky; ICRS – (astrophysics terminology) International Celestial Reference System, a coordinate system based on Hipparcos observations used to define the locations of objects in ...
The term is derived from the Greek word anemos, which means wind, and is used to describe any wind speed instrument used in meteorology. Angle of attack – In fluid dynamics , angle of attack ( AOA , or α {\displaystyle \alpha } ) is the angle between a reference line on a body (often the chord line of an airfoil ) and the vector representing ...
The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.
A Dictionary of Military Architecture: Fortification and Fieldworks from the Iron Age to the Eighteenth Century by Stephen Francis Wyley, drawings by Steven Lowe; Victorian Forts glossary Archived 2016-03-04 at the Wayback Machine. A more comprehensive version has been published as A Handbook of Military Terms by David Moore at the same site
The total wave functions are in the tensor product space of the Hilbert space of the spatial part (which is spanned by the position eigenstates) and the Hilbert space for the spin. Wave function The word "wave function" could mean one of following: A vector in Hilbert space which can represent a state; synonymous to "ket" or "state vector".
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Also called Kirchhoff's rules or simply Kirchhoff's laws. Two approximate equalities that deal with the current and voltage in electrical circuits. See Kirchhoff's laws for other meanings of the term. Kirchhoff's equations In fluid dynamics, a set of equations which describe the motion of a rigid body in an ideal fluid