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searching for Surface gravity 45 found (4323 total)

Ursell number (436 words) [view diff] exact match in snippet view article find links to article

fluid dynamics, the Ursell number indicates the nonlinearity of long surface gravity waves on a fluid layer. This dimensionless parameter is named after

Edge wave (151 words) [view diff] exact match in snippet view article find links to article

In fluid dynamics, an edge wave is a surface gravity wave fixed by refraction against a rigid boundary, often a shoaling beach. Progressive edge waves

Infragravity wave (1,033 words) [view diff] exact match in snippet view article find links to article

Infragravity waves are surface gravity waves with frequencies lower than the wind waves – consisting of both wind sea and swell – thus corresponding with

Pre-main-sequence star (481 words) [view diff] exact match in snippet view article find links to article

their surface gravity. A PMS object has a larger radius than a main-sequence star with the same stellar mass and thus has a lower surface gravity. Although

Wave–current interaction (436 words) [view diff] exact match in snippet view article find links to article

fluid dynamics, wave–current interaction is the interaction between surface gravity waves and a mean flow. The interaction implies an exchange of energy

Wave nonlinearity (1,869 words) [view diff] exact match in snippet view article find links to article

The nonlinearity of surface gravity waves refers to their deviations from a sinusoidal shape. In the fields of physical oceanography and coastal engineering

Dispersion (water waves) (3,373 words) [view diff] exact match in snippet view article

generally considered to be a dispersive medium. For a certain water depth, surface gravity waves – i.e. waves occurring at the air–water interface and gravity

World Geodetic System (2,842 words) [view diff] exact match in snippet view article find links to article

to the geoid. In accomplishing WGS 60, a combination of available surface gravity data, astro-geodetic data and results from HIRAN and Canadian SHORAN

Radiation stress (3,159 words) [view diff] exact match in snippet view article find links to article

phase-averaged – excess momentum flux caused by the presence of the surface gravity waves, which is exerted on the mean flow. The radiation stresses behave

Iribarren number (671 words) [view diff] exact match in snippet view article find links to article

dimensionless parameter used to model several effects of (breaking) surface gravity waves on beaches and coastal structures. The parameter is named after

HD 139357 b (356 words) [view diff] exact match in snippet view article find links to article

its radius and orbital inclination, thereby giving its density and surface gravity, which will allow a determination as to whether this object is a brown

Apollo/Skylab spacesuit (4,167 words) [view diff] exact match in snippet view article find links to article

81.6 kg (180 lb), and under lunar surface gravity a weight equivalent to 13.6 kg (30 lb). The low surface gravity and suit pressurization put considerable

K2-22b (400 words) [view diff] exact match in snippet view article find links to article

comets in the Solar System. The evaporation of this dust requires a low surface gravity from the host planet, implying it is a low mass, "Mars, Mercury, or

Stokes wave (8,310 words) [view diff] exact match in snippet view article find links to article

speed (or celerity) c and the wave phase θ are, for a progressive surface gravity wave on deep water – i.e. the fluid layer has infinite depth: η ( x

Modulational instability (1,750 words) [view diff] exact match in snippet view article find links to article

that the phenomenon was first discovered − and modeled − for periodic surface gravity waves (Stokes waves) on deep water by T. Brooke Benjamin and Jim E

Airy wave theory (5,476 words) [view diff] exact match in snippet view article find links to article

many purposes. Further, several second-order nonlinear properties of surface gravity waves, and their propagation, can be estimated from its results. Airy

Analog models of gravity (491 words) [view diff] exact match in snippet view article find links to article

implemented in a BEC of exciton-polaritons (a quantum fluid of light). Surface gravity waves have been recognized as a promising system for studying analog

Trochoidal wave (1,839 words) [view diff] exact match in snippet view article find links to article

Gerstner wave is an exact solution of the Euler equations for periodic surface gravity waves. It describes a progressive wave of permanent form on the surface

Swell (ocean) (2,772 words) [view diff] exact match in snippet view article

influence of gravity, and thus are often referred to as surface gravity waves. These surface gravity waves have their origin as wind waves, but are the consequence

Luke's variational principle (2,743 words) [view diff] exact match in snippet view article find links to article

include vorticity. Luke's Lagrangian formulation is for non-linear surface gravity waves on an—incompressible, irrotational and inviscid—potential flow

Helioseismology (5,445 words) [view diff] exact match in snippet view article find links to article

similar gravity modes confined to the convectively stable atmosphere. Surface gravity waves are analogous to waves in deep water, having the property that

Cnoidal wave (9,616 words) [view diff] exact match in snippet view article find links to article

which is why they are coined cnoidal waves. They are used to describe surface gravity waves of fairly long wavelength, as compared to the water depth. The

Clairaut's theorem (gravity) (1,767 words) [view diff] exact match in snippet view article

Clairaut's theorem characterizes the surface gravity on a viscous rotating ellipsoid in hydrostatic equilibrium under the action of its gravitational

Yellow hypergiant (3,828 words) [view diff] exact match in snippet view article find links to article

sensitive to surface gravity, such as Hβ line widths in hot stars or a strong Balmer discontinuity in cooler stars. Lower surface gravity often indicates

Green's law (2,635 words) [view diff] exact match in snippet view article find links to article

Green, is a conservation law describing the evolution of non-breaking, surface gravity waves propagating in shallow water of gradually varying depth and width

Volcanic dam (1,359 words) [view diff] no match in snippet view article find links to article

deposition. Depositional modes include gravity flow of molten lava at the surface, gravity flow or fall of pyroclastics through the air, as well as the redistribution

Long-period tides (1,625 words) [view diff] exact match in snippet view article find links to article

occur sufficiently slowly that they do not excite surface gravity waves. The excitation of surface gravity waves is responsible for the high amplitude semi-diurnal

Davey–Stewartson equation (388 words) [view diff] exact match in snippet view article find links to article

is the result of a multiple-scale analysis of modulated nonlinear surface gravity waves, propagating over a horizontal sea bed. Ginzburg–Landau equation

Gravity darkening (310 words) [view diff] exact match in snippet view article find links to article

equator than it does at its poles. As a result, the poles have a higher surface gravity, and thus higher temperature and pressure is needed to maintain hydrostatic

Inertial wave (1,113 words) [view diff] exact match in snippet view article find links to article

are a type of mechanical wave possible in rotating fluids. Unlike surface gravity waves commonly seen at the beach or in the bathtub, inertial waves

Benjamin–Bona–Mahony equation (1,223 words) [view diff] exact match in snippet view article find links to article

of the Korteweg–de Vries equation (KdV equation) for modeling long surface gravity waves of small amplitude – propagating uni-directionally in 1+1 dimensions

Komabayashi–Ingersoll limit (287 words) [view diff] exact match in snippet view article find links to article

circumstellar habitable zone. However, the limit also depends on the surface gravity of the planet, making heavy worlds somewhat more resistant to the runaway

Gravimetry (3,319 words) [view diff] exact match in snippet view article find links to article

m·s−2 (one nanogal), approximately one trillionth (10−12) of the Earth surface gravity. In a demonstration of the sensitivity of the superconducting gravimeter

Work (physics) (7,967 words) [view diff] no match in snippet view article

In science, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, for a constant

HR 8799 b (1,045 words) [view diff] exact match in snippet view article find links to article

that it has thicker clouds in its atmosphere than do older, higher surface gravity substellar objects of the same effective temperature. Near infrared

Subdwarf B star (1,570 words) [view diff] exact match in snippet view article find links to article

temperature and surface gravity acceleration curves appear to be in phase with the flux variations. In plots of temperature against surface gravity, the short-period

93 Minerva (444 words) [view diff] case mismatch in snippet view article find links to article

Retrieved 28 January 2012. "HEC:Exoplanets Calculator/Planet Density, Surface Gravity, and Escape Velocity". Planetary Habitability Laboratory. University

Colonization of Titan (1,267 words) [view diff] exact match in snippet view article find links to article

can all be used to produce fertilizer for growing food. Titan has a surface gravity of 0.138 g, slightly less than the Moon. Managing long-term effects

Beta Pictoris b (2,083 words) [view diff] exact match in snippet view article find links to article

L dwarf, but with a lower surface gravity. The effective temperature is constrained to 1700±100 K and the surface gravity to log g = 4.0±0.5. A second

Microturbulence (467 words) [view diff] exact match in snippet view article find links to article

Stellar microturbulence varies with the effective temperature and the surface gravity. The microturbulent velocity is defined as the microscale non-thermal

Lunar space elevator (2,806 words) [view diff] exact match in snippet view article find links to article

better known Earth-based space elevator idea, but since the Moon's surface gravity is much lower than the Earth's, the engineering requirements for constructing

Gravity of Mars (6,283 words) [view diff] exact match in snippet view article find links to article

interior is, and shows that the core is partially liquid. The study of surface gravity of Mars can therefore yield information about different features and

Gravity wave (2,568 words) [view diff] exact match in snippet view article find links to article

orbit. Gravity waves on an air–sea interface of the ocean are called surface gravity waves (a type of surface wave), while gravity waves that are within

Gravity wave (2,568 words) [view diff] exact match in snippet view article find links to article

orbit. Gravity waves on an air–sea interface of the ocean are called surface gravity waves (a type of surface wave), while gravity waves that are within

Mars suit (4,010 words) [view diff] exact match in snippet view article find links to article

focus on actual walking and a need for abrasion resistance. Mars' surface gravity is 37.8% of Earth's, approximately 2.3 times that of the Moon, so weight