- effective gravity
- 有效重力
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Effective field theory — In physics, an effective field theory is an approximate theory (usually a quantum field theory) that includes appropriate degrees of freedom to describe physical phenomena occurring at a chosen length scale, while ignoring substructure and… … Wikipedia
Effective stress — Karl von Terzaghi first proposed the relationship for effective stress in 1936. [http://fbe.uwe.ac.uk/public/geocal/SoilMech/stresses/stresses.htm] For him, the term ‘effective’ meant the calculated stress that was effective in moving soil, or… … Wikipedia
Earth's gravity — Earth s gravity, denoted by g , refers to the gravitational attraction that the Earth exerts on objects on or near its surface. Its strength is usually quoted in terms of the acceleration it gives to falling bodies (acceleration due to gravity),… … Wikipedia
Quantum gravity — is the field of theoretical physics attempting to unify quantum mechanics, which describes three of the fundamental forces of nature (electromagnetism, weak interaction, and strong interaction), with general relativity, the theory of the fourth… … Wikipedia
Artificial gravity — is a simulation of gravity in outer space or free fall. Artificial gravity is desirable for long term space travel for ease of mobility and to avoid the adverse health effects of weightlessness.MethodsArtificial gravity could be created in… … Wikipedia
Arch-gravity dam — Arch gravity Hoover Dam Architectural Plans An arch gravity dam, curved gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. It is a dam that curves upstream in a narrowing curve that directs most of… … Wikipedia
Center of gravity of an aircraft — The center of gravity (CG) is the point at which an aircraft would balance if it were possible to suspend it at that point. It is the mass center of the aircraft, or the theoretical point at which the entire weight of the aircraft is assumed to… … Wikipedia
Induced gravity — (or Emergent gravity) is an idea in quantum gravity that space time background emerges asa mean field approximation of underlying microscopic degrees of freedom, similar to the fluid mechanics approximation of BEC. The concept was originally… … Wikipedia
porosity, effective — 1. The ratio, usually expressed as a percentage of the total volume of voids available for fluid transmission to the total volume of the porous medium [22]. 2. The ratio of the volume of the voids of a soil or rock mass that can be drained… … Lexicon of Cave and Karst Terminology
star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… … Universalium
Resistive ballooning mode — portalpar|PhysicsThe resistive ballooning mode (RBM) is an instability occurring in magnetized plasmas, particularly in magnetic confinement devices such as tokamaks, when the pressure gradient is opposite to the effective gravity created by a… … Wikipedia