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Schienenzeppelin
The Schienenzeppelin, or Rail zeppelin, was an experimental German railcar built in 1930, propelled by an aircraft propeller; it reached 230.2 km/h in 1931, a record that stood until 1954.
Schilling telegraph
The Schilling telegraph, built by Baron Pavel Schilling, was an electromagnetic needle telegraph first demonstrated in Saint Petersburg in 1832 and regarded as the first practical electric telegraph.
Schindler Group
Schindler Group, also known as Schindler Holding, is a Swiss elevator and escalator company founded in Lucerne in 1874 that operates in more than 100 countries.
Schleich
Schleich is a German toy manufacturer based in Munich, founded by Friedrich Schleich in 1935, best known for hand-painted plastic animal, dinosaur, and horse figurines.
Schleicher ASK 21
The Schleicher ASK 21 is a two-seat glass-fiber training glider built by Alexander Schleicher in Germany, first flown in 1979 and still widely used for instruction.
Schleifring (company)
Schleifring GmbH is a German manufacturer of slip rings and contactless rotary joints, founded in 1974 and headquartered in Fürstenfeldbruck near Munich, supplying medical, industrial, and defense markets.
Schlumberger
Schlumberger, known since 2022 as SLB, is a global energy technology company founded in 1926 by Conrad and Marcel Schlumberger that pioneered electrical well logging.
Schlumberger brothers
Conrad and Marcel Schlumberger were French geophysicists from Alsace who founded electrical well logging, recording the first resistivity well log at Pechelbronn, France, in 1927.
Schmalz (company)
Schmalz (J. Schmalz GmbH) is a German family-owned manufacturer of vacuum technology based in Glatten in the Black Forest, founded in 1910 as a razor blade factory.
Schmertmann method
The Schmertmann method is a semi-empirical procedure for estimating settlement of shallow foundations on sand using cone penetration test data, introduced by John H. Schmertmann in 1970.
Schmid factor
The Schmid factor is a dimensionless geometric factor giving the fraction of uniaxial stress resolved as shear on a crystal's slip plane, which governs when slip begins.
Schmidl & Cox synchronization algorithm
The Schmidl & Cox synchronization algorithm is a 1997 preamble-based method for OFDM receivers that finds frame timing and corrects the carrier frequency offset using two training symbols.
Schmidt coupling
A Schmidt coupling is a mechanical shaft coupling that keeps two radially offset parallel shafts turning in exact 1:1 synchronism, even while the offset changes under load.
Schmitt trigger
A Schmitt trigger (Shmidt trigger) is an electronic circuit that switches at two thresholds, so its hysteresis converts noisy, slowly changing signals into sharp logic edges.
Schneeberger (company)
Schneeberger is a Swiss family-owned manufacturer of linear motion technology, founded by Walter Schneeberger in Roggwil, Switzerland, in 1923. Its products include linear guideways, ball screws, and integrated measuring systems.
Schneider Electric
Schneider Electric SE is a French multinational energy technology company headquartered in Rueil-Malmaison, France, employing 160,000 people in over 100 countries to provide electrical distribution, energy management, and industrial automation.
Schneider National
Schneider National is an American multimodal transportation and logistics company headquartered in Green Bay, Wisconsin, founded in 1935 with one truck and operating about 12,500 trucks across North America.
Schneider Trophy
The Schneider Trophy, also called the Schneider Cup, was a prize for a seaplane race held from 1913 to 1931, won permanently by Britain after three consecutive victories.
SchNet
SchNet is a deep neural network architecture that predicts quantum-chemical properties of molecules and materials from atomic numbers and 3D coordinates, introduced at NeurIPS 2017 by Kristof Schütt and colleagues.
Schoharie Creek Bridge collapse
The Schoharie Creek Bridge collapse was the 1987 failure of an I-90 bridge near Amsterdam, New York, where floodwater scour dropped spans into the creek, killing 10.
Schönbrunn Palace
Schönbrunn Palace, or Schloss Schönbrunn, is a Baroque former Habsburg imperial summer residence in Vienna with 1,441 rooms and a UNESCO-listed park, where Emperor Franz Joseph was born in 1830.
Schönhage–Strassen algorithm
The Schönhage–Strassen algorithm is an asymptotically fast method for multiplying large integers, published by Arnold Schönhage and Volker Strassen in 1971, running in O(N log N log log N) time.
School bus
A school bus, also known as the yellow school bus, is a motor vehicle built to stricter safety standards than ordinary buses and, in North America, painted standardized yellow for visibility.
School bus warning lights
School bus warning lights are the red and amber flashing lamps on North American school buses: amber means the bus is slowing, red means children are boarding.
Schoology
Schoology, marketed as Schoology Learning, is a K-12 learning management system founded in 2009, acquired by PowerSchool in 2019, and used in more than 60,000 schools.
Schooner
The Schooner is a North American sailing vessel that emerged in the early 1700s. It was dominant on the Atlantic coast for its fishing and trading.
Schott AG
Schott AG is a German manufacturer of specialty glass, glass-ceramics, and advanced materials, founded in Jena in 1884, headquartered in Mainz, and owned by the Carl Zeiss Foundation.
Schottel
Schottel is a German marine propulsion manufacturer founded by Josef Becker in 1921 and headquartered in Spay on the Rhine, best known for its 360-degree steerable RudderPropeller, of which more than 17,000 units are installed.
Schottky diode
A Schottky diode, also called a Schottky barrier diode, is a semiconductor diode formed by a metal-semiconductor contact instead of a p-n junction, turning on at about 0.3 V and switching very fast.
Schrader valve
The Schrader valve, also known as the American valve, is a spring-loaded tire valve invented by George Schrader in 1891 and now standard on almost all motor vehicles.