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Sex robot
A sex robot, or sexbot, is an anthropomorphic robot designed for sexual interaction with humans, distinct from non-interactive sex dolls and bodiless AI companion chatbots.
Sex toy
A sex toy, also known as an adult toy or marital aid, is an object designed for sexual pleasure, including vibrators, masturbators, anal devices, and app-controlled products.
Sex toy industry
The sex toy industry comprises the manufacturers, brands, and retailers of vibrators, dildos, and app-connected devices, a market estimated between USD 3.2 billion and USD 46.5 billion depending on definition.
Sex.com
Sex.com is an internet domain name registered by Gary Kremen in 1994 and stolen through a forged letter, producing the $65 million judgment in Kremen v. Cohen.
Sextant
A sextant is a navigational instrument that measures the altitude of a celestial body above the horizon by double reflection; John Bird made the first in 1757.
Sexton (artillery)
The Sexton was a Canadian-built self-propelled gun of the Second World War, mounting the British 25-pounder on a tank chassis and serving British and Canadian forces from 1943.
Seychelles International Airport
Seychelles International Airport, also known as Mahé Airport, is the primary international airport of Seychelles, on the southeast coast of Mahé; opened in 1972 by Queen Elizabeth II, it is the country's main gateway.
Seymour B. Cohn
Seymour B. Cohn (1920–2015) was an American microwave engineer known for stripline theory and microwave filter design, who worked at Sperry and Stanford Research Institute and won the IEEE Lamme Medal.
Seymour Baron
Seymour Baron was an American engineer in electric power and energy systems, elected to the National Academy of Engineering in 1980 and honored for water-desalting expertise.
Seymour Cray
Seymour Cray, fully Seymour Roger Cray, was an American electrical engineer who designed the world's fastest computers for four decades and is called the father of the supercomputer.
Seymour M. Bogdonoff
Seymour Moses Bogdonoff (1921–2005) was an American aeronautical engineer at Princeton University who pioneered hypersonic aerodynamics and led the Princeton Gas Dynamics Laboratory for 36 years.
Seymour Papert
Seymour Papert (1928–2016) was a South African-born mathematician and computer scientist who co-directed the MIT Artificial Intelligence Laboratory and co-created the Logo programming language for children.
SF6 circuit breaker
An SF6 circuit breaker is a high-voltage switching device that interrupts electrical current in sulfur hexafluoride gas, which combines excellent arc quenching with extreme climate impact.
SFC Energy
SFC Energy is a German fuel cell manufacturer founded in 2000 and headquartered in Brunnthal near Munich, producing direct methanol and hydrogen fuel cells for defense, industrial, and leisure markets.
SFP-DD
SFP-DD (Small Form-factor Pluggable Double Density) is a two-lane pluggable transceiver form factor for 100 Gbps networking, defined by an industry MSA group formed in 2017.
SFP28
SFP28 (Small Form-factor Pluggable 28) is a single-lane hot-pluggable transceiver form factor specified for 25 Gigabit Ethernet, electrically compatible with SFP+ and defined by the SNIA SFF-8402 specification.
SFpark
SFpark was a federally funded pilot of San Francisco's transit agency that adjusted parking rates by demand, and became a permanent citywide program in 2014.
SFR (Forsmark)
SFR (Swedish: Slutförvar för kortlivat radioaktivt avfall) is an underground repository at Forsmark, Sweden, where SKB has deposited short-lived radioactive waste in bedrock beneath the Baltic Sea since 1988.
SGI Origin (server)
SGI Origin is a family of ccNUMA servers from Silicon Graphics introduced in 1996, presenting globally shared memory across nodes scalable to 1024 processors and 1 TB of memory, and running IRIX.
SGK-Novosibirsk
SGK-Novosibirsk (АО «СГК-Новосибирск») is a Russian heat and power company serving Novosibirsk, which supplies heat to 86% of the city's residents from five plants.
SGL Carbon
SGL Carbon SE is a German manufacturer of carbon-based materials, specialty graphites, and carbon-fiber composites, headquartered in Wiesbaden and supplying graphite anode materials for lithium-ion batteries.
SGL Carbon SIGRACET GDL
SIGRACET GDL is a brand of porous carbon gas diffusion layers made by German company SGL Carbon for PEM fuel cells, widely used in fuel cell research.
SGLang
SGLang is an open-source serving framework for large language and multimodal models, introduced in December 2023 by Lianmin Zheng and colleagues at UC Berkeley and Stanford.
SGP4
SGP4 (Simplified General Perturbations 4) is a computationally efficient orbit propagator that predicts the position and velocity of Earth-orbiting objects from Two-Line Element (TLE) sets.
SGS (company)
SGS SA (Société Générale de Surveillance) is a Swiss testing, inspection, and certification company founded as a grain inspection house in Rouen, France, in 1878, now operating in more than 100 countries.
SHA-1
SHA-1, also known as the Secure Hash Algorithm 1, is a cryptographic hash function producing a 160-bit digest, designed by the NSA and specified in 1995.
SHA-2
SHA-2 (Secure Hash Algorithm 2) is a family of cryptographic hash functions specified by NIST in 2002 to replace SHA-1, with members from SHA-224 to SHA-512.
SHA-256
SHA-256 (Secure Hash Algorithm 256) is a NIST cryptographic hash function in the SHA-2 family that converts any message into a 256-bit digest, and it secures Bitcoin and TLS.
SHA-3
SHA-3, also known as Keccak, is a family of cryptographic hash functions standardized by NIST as FIPS 202, based on the Keccak algorithm that won its 2012 competition.
Shaan-Jing Gas Pipeline
The Shaan-Jing Gas Pipeline (陕京线, short for Shaanxi–Beijing) is a natural gas pipeline system carrying gas from the Ordos Basin in Shaanxi to Beijing and Tianjin.