All articles starting with S
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Shea Ventures
Shea Ventures is a California venture investment firm based in Walnut, California, whose principal business is investing in and acquiring company securities, documented in SEC filings from 2005 through 2015.
Shea Weber
Shea Weber, born 1985 in Sicamous, British Columbia, is a retired Canadian NHL defenceman (Nashville Predators, Montreal Canadiens) and 2024 Hockey Hall of Fame inductee, a two-time Olympic gold medalist (2010, 2014) famous for his slap shot and never winning the Norris Trophy.
Shea Whigham
Shea Whigham (Franklin Shea Whigham Jr., born 1969) is an American character actor known for Eli Thompson on Boardwalk Empire, Tigerland, First Man, Mission: Impossible, and F1.
Sheaf (mathematics)
A sheaf (mathematics) assigns data to the open sets of a topological space so that compatible local data glue uniquely; introduced by Jean Leray in the 1940s.
Sheaf cohomology
Sheaf cohomology is the cohomology theory attached to a sheaf on a topological space or scheme, measuring the failure of local sections to glue into global ones.
Sheafification
Sheafification is the construction that turns a presheaf into a sheaf, its best approximation, and the standard way to build quotient sheaves, image sheaves, and inverse image sheaves.
Shealtiel (Salathiel)
Shealtiel, also Salathiel, is a biblical figure of the Babylonian exile, called the son of King Jehoiachin and the father of Zerubbabel, governor of Judah.
Sheamus
Sheamus (Stephen Farrelly), Irish WWE wrestler from Dublin, 2009-2026. Four-time world champion, 2012 Royal Rumble and Money in the Bank winner, The Bar with Cesaro; left WWE July 2026, free agent October 2026.
Shear and moment diagram
A shear and moment diagram is a pair of graphs plotting internal shear force and bending moment along a beam, used to locate potential failure in design.
Shear banding
Shear banding is a flow instability where a fluid under shear splits into bands of different apparent viscosity, observed in many soft materials like wormlike micelles and polymer solutions.
Shear center
The shear center, also called the flexural center or center of twist, is the point in a beam cross-section where a transverse load produces bending without twisting.
Shear force
Shear force, also called shearing force, is the internal force component parallel to a beam's cross section, denoted V, found by summing transverse forces on one side of a cut.
Shear forming
Shear forming, also called shear spinning, is a metal forming process that thins a rotating disc over a mandrel with rollers to make axisymmetric parts.
Shear jamming
Shear jamming is the formation of a mechanically rigid, solid-like state in granular packings by applying shear strain at densities below the density needed for jamming under compression.
Shear locking
Shear locking is a numerical artifact of the finite element method in which thin beam, plate, or shell elements become artificially stiff, giving deflections far too small.
Shear mapping
Shear mapping, or shear transformation, is a linear map that shifts each point parallel to a fixed line by an amount proportional to its distance from it, preserving area.
Shear modulus
The shear modulus, or modulus of rigidity, is the ratio of shear stress to shear strain in a material, measuring its resistance to shape change.
Shear pin
A shear pin is a sacrificial mechanical element joining rotating parts of a drive, sized to break when torque exceeds a calibrated limit, protecting the machinery behind it.
Shear polaritons
Shear polaritons are hybrid light–matter waves, generally phonon polaritons, in low-symmetry monoclinic and triclinic crystals, first reported as hyperbolic shear polaritons in beta-gallium oxide in 2022.
Shear strength
Shear strength is the maximum shear stress a material, joint, or interface can carry before failure, the property that governs how bolts, welds, glued joints, and soil slopes fail.
Shear strength (soil)
Shear strength of soil is the ultimate resistance of a soil mass to shear stresses under loading, and it governs bearing capacity, earth pressure, embankment stability, and foundation design.
Shear stress
Shear stress, also called shearing stress, is the component of stress that acts parallel to a material surface, defined as tangential force per unit area and measured in pascals.
Shear stress transport model
The shear stress transport model is a two-equation turbulence model used in computational fluid dynamics, introduced by F. R. Menter in 1994 to predict boundary layers and flow separation.
Shear test
A shear test is a mechanical test applying shear loading to measure shear strength, stiffness, or failure in metals, composites, adhesives, polymers, and soils, standardized by ASTM methods.
Shear thinning
Shear thinning, also called pseudoplastic behavior, is the decrease of a fluid's viscosity as the shear rate increases; it occurs in paints, shampoos, and polymer solutions.
Shear wall
A shear wall is a structural wall designed to resist lateral loads, chiefly wind and earthquakes, often surrounding elevator cores and providing lateral stiffness to high-rise buildings.
Shear wave imaging
Shear wave imaging is a quantitative ultrasound elastography method that measures how fast shear waves travel through tissue to estimate stiffness, used mainly to stage liver fibrosis without biopsy.
Shear wave splitting
Shear wave splitting is a seismological technique in which anisotropic rock splits a passing shear wave into two waves of different speed and polarization, revealing mantle deformation.
Shear zone
A shear zone is a tabular band of intense ductile deformation in rock, the deep ductile counterpart of faults, whose characteristic rock is mylonite and which commonly hosts ore deposits.
Shear-thickening mechanism in dense suspensions
Shear thickening in dense suspensions is the increase of a suspension's viscosity with shear rate, caused by a transition from lubricated motion to direct frictional contact between particles.