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searching for Surface gravity 39 found (4191 total)

Ursell number (435 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 (1,027 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

World Geodetic System (2,809 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 (3,158 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 (670 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

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

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

Trochoidal wave (1,733 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

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

Modulational instability (1,738 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

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 (2,593 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 (5,433 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

Yellow hypergiant (3,354 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

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

Green's law (2,631 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

Gravity darkening (313 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

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

Work (physics) (7,935 words) [view diff] no match in snippet view article

In physics, 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

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 (3,287 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

HR 8799 b (1,037 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

Beta Pictoris b (1,913 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

Subdwarf B star (1,566 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

Colonization of Titan (1,154 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

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

Microseism (2,020 words) [view diff] exact match in snippet view article find links to article

periods, typically close to 16 s, and can be explained by the effect of surface gravity waves in shallow water. These microseisms have the same period as the

Group velocity (3,490 words) [view diff] exact match in snippet view article find links to article

at the center of the group, and vanish at the wave group front. For surface gravity waves, the water particle velocities are much smaller than the phase

Orders of magnitude (acceleration) (1,002 words) [view diff] exact match in snippet view article

Parabellum handgun bullet, peak[citation needed] 3 800 000 m/s2 390 000 g Surface gravity of white dwarf Sirius B 3 900 000 m/s2 slightly below 400 000 g Ultracentrifuge