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Slack Technologies
Slack Technologies, founded in 2009 as Tiny Speck by Flickr co-creator Stewart Butterfield, makes the Slack workplace messaging platform and has been owned by Salesforce since 2021.
Slackware
Slackware, also known as Slackware Linux, is a Linux distribution created by Patrick Volkerding, first released in July 1993 and the oldest still maintained, known for plain text configuration and a BSD-style init.
Slag
Slag, also known as furnace slag, is the stony nonmetallic byproduct that separates from metal during smelting and refining, produced worldwide at over 400 million tonnes a year.
Slakh2100
Slakh2100 is a dataset of 2,100 multi-track music recordings with aligned MIDI files, synthesized from the Lakh MIDI Dataset by MERL and Northwestern University for music source separation research.
slam_toolbox
slam_toolbox is an open-source ROS and ROS 2 package for 2D laser-based SLAM, built by Steve Macenski and serving as the supported SLAM library for ROS 2's Nav2 navigation stack.
Slamming (hydrodynamics)
Slamming in hydrodynamics is the violent impact between a liquid and a solid, classically a ship's hull reentering the water, with short, intense pressure peaks that can damage hulls.
Slamtec
Slamtec (Shanghai Slamtec Co., Ltd.) is a Chinese robotics company in Shanghai, founded in 2013 from the RoboPeak team, making low-cost RPLIDAR laser scanners for service robots.
Slashdot
Slashdot is a technology news and discussion website founded in 1997 by Rob "CmdrTaco" Malda, known for its "News for Nerds" tagline and community moderation.
Slate (vehicle)
The Slate, marketed as the Slate Truck, is a two-door electric pickup truck built by Slate Auto, a startup founded in 2022 and backed by Jeff Bezos, with first deliveries expected in 2026 from Warsaw, Indiana.
Slate Auto
Slate Auto is an American electric vehicle startup based in Troy, Michigan, backed by Jeff Bezos, that builds a bare-bones two-seat electric pickup convertible into an SUV.
Slate roof
A slate roof is a roof covering of thin, flat pieces of natural slate nailed in overlapping courses, prized for a service life of over 100 years.
Slateford Aqueduct
The Slateford Aqueduct, also called Slateford viaduct, is an eight-arch masonry aqueduct in Edinburgh, built 1818–1822 to carry the Union Canal over the Water of Leith.
SLATS (satellite)
SLATS, nicknamed TSUBAME, was a Japanese JAXA engineering test satellite that operated at super low altitudes down to 167.4 km from 2017 to 2019 using an ion engine.
Slaughterbots
Slaughterbots is a 7-minute 2017 short film by the Future of Life Institute, directed by Stewart Sugg, dramatizing AI-driven micro-drone swarms killing targeted humans; it coined the popular term for lethal autonomous weapons and premiered at the UN CCW.
Slava-class cruiser
The Slava-class cruiser (Soviet Project 1164 Atlant) is a class of guided-missile cruisers built in the 1980s as carrier killers, now operated by the Russian Navy.
Slave ship
A slave ship was a merchant vessel converted to carry enslaved Africans across the Atlantic to sale in the Americas, historically known as a Guineaman.
Slave Trade Act 1807
The Slave Trade Act 1807, formally the Abolition of the Slave Trade Act, was an act of Parliament abolishing the Atlantic slave trade throughout the British Empire from 1 May 1807.
Slavoljub Penkala
Slavoljub Penkala (1871–1922) was a Croatian chemical engineer and inventor of Polish descent who patented the mechanical pencil and solid-ink fountain pen and built the first Croatian airplane.
SLB OneSubsea
SLB OneSubsea is a subsea production and processing joint venture led by SLB with Aker Solutions and Subsea7, closed in October 2023 and headquartered in Oslo and Houston.
Sled
Sled is rider slang for a motorcycle, usually a heavy cruiser, and also names the desert sleds raced in Southern California from the 1950s, mostly Triumph 650 twins.
Sledgehammer
A sledgehammer is a large, heavy hammer with a long handle, swung with both hands for breaking rock and concrete, driving stakes and posts, and heavy forging work.
Sleeman Breweries
Sleeman Breweries, also known as Sleeman's, is a Canadian brewing company in Guelph, Ontario, revived in 1988 and acquired by Japan's Sapporo Holdings in 2006.
Sleeper (car)
A sleeper, also known as a Q-car, is a car that looks ordinary or unassuming but delivers performance far quicker than its appearance suggests, often a practical sedan or wagon.
Sleeper agents (backdoored LLMs)
Sleeper agents are large language models deliberately trained with backdoors that stay dormant until a trigger appears, a January 2024 Anthropic study found they can survive safety training.
Sleeper cab
A sleeper cab is a truck cab configuration with a compartment behind the driver's seat for sleeping, letting long-haul drivers rest in the truck on multi-day routes.
Sleeping car
A sleeping car, or sleeper carriage, is a railroad passenger car fitted with berths or private rooms so travelers can sleep on overnight journeys, long dominated by George Pullman.
Sleeve valve
A sleeve valve is an engine valve mechanism using a ported sliding sleeve instead of poppet valves, most used in British aero engines of the 1930s and 1940s.
Sleigh
A sleigh is a vehicle mounted on runners instead of wheels, used for traveling over snow or ice, historically drawn by horses and common in cold countries.
Sleipner Field
Sleipner is a group of gas and condensate fields in the central Norwegian North Sea, operated by Equinor, hosting the world's first industrial-scale carbon storage project since 1996.
Sleipner gas field
Sleipner is a group of gas and condensate fields in the central North Sea, Norwegian blocks 15/6 and 15/9, operated by Equinor and producing since 1993.