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Six Days, Seven Nights
Six Days, Seven Nights is a 1998 American romantic adventure-comedy directed by Ivan Reitman, in which a magazine editor and a charter pilot are stranded on a deserted island, starring Harrison Ford and Anne Heche.
Six-axis force/torque sensor
A six-axis force/torque sensor is a transducer measuring three force and three torque components at once, usually mounted between a robot's flange and end-effector for force feedback.
Six-bar linkage
A six-bar linkage is a planar mechanism of six links and seven joints that moves with one degree of freedom and generates motions a four-bar linkage cannot.
Six-factor formula
The six-factor formula is an equation in nuclear reactor physics that gives a thermal reactor's effective multiplication factor as the product of six factors covering a neutron generation's life cycle.
Sixth-generation fighter
A sixth-generation fighter is a combat aircraft intended to follow fifth-generation fighters such as the F-22 and F-35, expected to offer deeper stealth, better sensors, and crewed-uncrewed teaming.
Sixth-rate
A sixth-rate was a small Royal Navy sailing warship carrying 20 to 28 guns, the smallest rated vessel in the fleet and never a ship of the line.
size (Unix)
size is a Unix command-line utility, part of the GNU Binary Utilities, that lists the section sizes and total size of object files, executables, and archives, commonly used after compiling.
Sizewell
Sizewell is a coastal site in Suffolk, England, hosting three nuclear power stations: the decommissioned Sizewell A, operating Sizewell B, and the twin-reactor Sizewell C under construction.
Sizewell nuclear power plant
The Sizewell nuclear power plant is a site on the North Sea coast of Suffolk, England, hosting the operating Sizewell B reactor and the Sizewell C project.
SJ (railway company)
SJ AB is the Swedish state-owned passenger railway company, formed on 1 January 2001 from Statens Järnvägar and the largest operator of passenger rail services in Sweden.
SJ Rc
The SJ Rc, or Rc locomotive, is a family of ASEA-built electric locomotives for Swedish State Railways from 1967 to 1988, SJ's most numerous class.
Sjambok
The sjambok, also known as Mnigolo or Litupa, is a heavy semi-rigid whip from southern Africa, originally cut from rhinoceros or hippopotamus hide and used for driving animals and punishment.
SJC-2
SJC-2 (Southeast Asia–Japan Cable 2, SJC2) is a 10,500 km submarine communications cable connecting Singapore, Thailand, Vietnam, Hong Kong, Taiwan, China, South Korea, and Japan.
SK Engineering & Construction
SK Engineering & Construction (SK E&C, Korean: SK에코플랜트, now SK ecoplant) is a South Korean engineering and construction company in the SK Group, founded in 1977.
SK Hynix (하이닉스)
SK Hynix (하이닉스; formerly Hynix Semiconductor and Hyundai Electronics) is a South Korean memory semiconductor maker and SK Group affiliate that leads the world in high bandwidth memory.
SK Hynix–OpenAI memory deal
The SK Hynix–OpenAI memory deal is a letter of intent signed October 1, 2025, under which SK hynix will supply HBM memory for OpenAI's Stargate data centers.
SK Telecom (SK텔레콤)
SK Telecom, also known as SK텔레콤, is a South Korean wireless carrier founded in 1984, acquired by SK Group in 1994, and renamed SK Telecom in 1997.
SK-105 Kürassier
The SK-105 Kürassier is an Austrian light tank and tank destroyer, built by Saurer-Werke with a 105 mm gun in an oscillating turret, entering service in 1972.
SK-II
SK-II (エスケーツー) is a Japanese luxury skincare brand launched in 1980, owned by Procter & Gamble since 1991 and known for its PITERA ferment ingredient.
Skagit River Hydroelectric Project
The Skagit River Hydroelectric Project is a system of three dams, Gorge, Diablo, and Ross, on the upper Skagit River in Washington, owned by Seattle City Light.
Skagway repeater stations of the Yukon and Alaska telegraph trail
The Skagway repeater stations were the coastal-end telegraph stations of the Alaska–Yukon telegraph trail, relaying messages from the port of Skagway over White Pass toward Bennett, Whitehorse, and Dawson City.
Skaland
Skaland is a Norwegian flake graphite mining company, Skaland Graphite AS, based on Senja in Troms, northern Norway, described as Europe's leading producer of crystalline flake graphite.
Skarv field
Skarv is an oil and gas field in the Norwegian Sea, discovered in 1998 and produced through an FPSO vessel by operator Aker BP since 2012.
Skarv Oil and Gas Field
Skarv is an oil and gas field in the northern Norwegian Sea, discovered in 1998, producing since 2013 and operated by Aker BP via a floating production vessel.
SKC (company)
SKC Co., Ltd. is a South Korean SK Group materials company founded in 1976, now focused on battery copper foil, silicon anodes, semiconductor materials, and glass substrates.
Skein (hash function)
Skein is a family of cryptographic hash functions built on the Threefish block cipher; it was a SHA-3 finalist, but NIST chose Keccak in 2012.
Skeletal animation
Skeletal animation, also called skinned animation, is a technique for animating a 3D mesh by attaching it to a skeleton of joints, the standard method for character animation in games.
Skeleton key
A skeleton key is a key filed down so its bit can pass the wards of a warded lock, often opening many locks of the same type.
Skeleton Key attack
Skeleton Key is a universal jailbreak technique for large language models, disclosed by Microsoft in 2024, which convinces models to answer any request with a warning instead of refusing.
Skeleton-based action recognition
Skeleton-based action recognition classifies human actions from time sequences of body-joint coordinates rather than raw video. It is robust to lighting and background changes, efficient, and privacy-friendly.