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Speed of sound
The speed of sound, or sound velocity, is the rate a pressure disturbance travels through a medium, about 343 m/s in air at sea level and 5,960 m/s in steel.
Speed of sound in neutron-star matter
The speed of sound in neutron-star matter measures how fast pressure disturbances travel through a neutron star's interior, probing the equation of state that sets its maximum mass.
Speed Racer
Speed Racer, originally マッハGoGoGo (Mach GoGoGo), is Tatsunoko Production's 1967 racing anime by Tatsuo Yoshida: 52 Fuji TV episodes, the gadget-button Mach Five, Peter Fernandez's US dub, and the 2008 Wachowski film.
Speed Racer (マッハGoGoGo) (film)
Speed Racer (Japanese: マッハGoGoGo, Mach GoGoGo) is a 2008 American racing film written and directed by the Wachowskis, starring Emile Hirsch and based on the 1967 anime series.
Speed reading
Speed reading: techniques and courses claiming to read far faster without comprehension loss. Key figures: Evelyn Wood's Reading Dynamics, RSVP apps like Spritz. Research caps skilled reading at 200-400 wpm; over 1,000 wpm costs comprehension.
Speed skating
Speed skating: racing on ice over set distances, governed by the ISU (founded 1892) and split into long track (400 m oval, pairs against the clock) and short track. Olympic since 1924; Netherlands leads with 146 medals.
Speed skating at the 2006 Winter Olympics – Men's 500 metres
Men's 500 m long track speed skating, Torino 2006 Olympics, 13 February, Oval Lingotto. Joey Cheek (USA) won gold in 1:09.76 total over two races; Dorofeyev (RUS) silver, Lee Gang-Seok (KOR) bronze.
Speed skating at the 2010 Winter Olympics – Men's 500 metres
Men's 500 m long track speed skating, Vancouver 2010 Olympics, 15 February 2010, Richmond Olympic Oval; Mo Tae-Beom (South Korea) won gold in 1:09.82 over two runs, ahead of Nagashima and Kato of Japan.
Speed skating at the 2014 Winter Olympics – Men's 10,000 metres
Men's 10,000 m long track speed skating, Sochi 2014 Olympics, 18 February at Adler Arena. Jorrit Bergsma won in 12:44.45, an Olympic and lowland world record, leading a record fourth all-Dutch podium sweep over Sven Kramer and Bob de Jong.
Speed skating at the 2014 Winter Olympics – Women's 1000 metres
Women's 1000 m long track speed skating at Sochi 2014, held 13 February at Adler Arena. Zhang Hong (CHN) won gold in 1:14.02, China's first speed skating gold, ahead of Ireen Wüst and Margot Boer.
Speed skating at the 2014 Winter Olympics – Women's 500 metres
Women's 500 m speed skating, Sochi 2014: Lee Sang-Hwa (KOR) retained her title in 74.70 (37.42 + 37.28 OR) ahead of Olga Fatkulina (RUS) and Margot Boer (NED), becoming the third woman to defend the Olympic 500 m crown.
Speed skating at the 2018 Winter Olympics – Men's mass start
Men's mass start, 2018 PyeongChang Winter Olympics, Gangneung Oval, 24 February 2018. Inaugural Olympic edition, 24 skaters, 16 laps, points format; Lee Seung-Hoon (KOR) won gold, Bart Swings silver, Koen Verweij bronze.
Speed skating at the 2018 Winter Olympics – Women's 1000 metres
Women's 1000 m long track speed skating, PyeongChang 2018 (14 February 2018, Gangneung Oval). Jorien ter Mors (NED) won in Olympic record 1:13.56; Nao Kodaira and Miho Takagi (JPN) took silver and bronze.
Speed skating at the 2018 Winter Olympics – Women's 1500 metres
Women's 1500 m long track speed skating, PyeongChang 2018: Ireen Wüst (NED) won gold in 1:54.35 at Gangneung Oval on 12 February 2018, ahead of Miho Takagi and Marrit Leenstra, becoming the most successful Dutch Olympian.
Speed skating at the 2018 Winter Olympics – Women's 500 metres
Women's 500 m speed skating, PyeongChang 2018, 18 February, Gangneung Oval: Nao Kodaira won gold in Olympic record 36.94, beating Lee Sang-Hwa (37.33) and Erbanová (37.34).
Speed skating at the 2018 Winter Olympics – Women's mass start
Women's mass start speed skating, 2018 PyeongChang Olympics debut, 24 February 2018, Gangneung Oval. Nana Takagi (JPN) won gold, Kim Bo-Reum (KOR) silver, Irene Schouten (NED) bronze; 24 skaters, 16 laps, sprint points format.
Speed skating at the 2022 Winter Olympics – Men's 1500 metres
Men's 1500 m speed skating, Beijing 2022 (8 February): Kjeld Nuis (NED) won gold in Olympic record 1:43.21, Thomas Krol silver, Kim Min-Seok bronze; Nuis's back-to-back title was the first since Koss 1992-94.
Speed skating at the 2022 Winter Olympics – Men's 500 metres
Men's 500 m long track speed skating, Beijing 2022, 12 February 2022; Gao Tingyu (高亭宇) won in 34.32 OR, ahead of Cha Min Kyu and Wataru Morishige; first Olympic speed skating gold for a Chinese man.
Speed skating at the 2022 Winter Olympics – Men's team pursuit
Men's team pursuit, long-track speed skating, Beijing 2022 Winter Olympics: Norway won gold in 3:38.08 ahead of ROC and the United States; ROC set the 3:36.62 Olympic record in the semifinal.
Speed skating at the 2022 Winter Olympics – Women's 1000 metres
Women's 1000 m long track speed skating, Beijing 2022, 17 February. Miho Takagi (JPN) won gold in Olympic record 1:13.19; Jutta Leerdam (NED) silver, Brittany Bowe (USA) bronze; 30 skaters, 17 countries.
Speed skating at the 2022 Winter Olympics – Women's 1500 metres
Women's 1500 m long track speed skating, Beijing 2022, 7 February 2022. Ireen Wüst (NED) won in 1:53.28 OR, first individual golds at five Olympics; Miho Takagi (JPN) silver, Antoinette de Jong (NED) bronze.
Speed skating at the 2022 Winter Olympics – Women's 500 metres
The women's 500 meters at the 2022 Winter Olympics was won by America's Erin Jackson in 37.04 seconds in Beijing, making her the first Black woman to win Olympic speed skating gold.
Speed skating at the 2026 Winter Olympics
Speed skating at the 2026 Winter Olympics (Milano Cortina): 14 long track events, 7 per sex, held 7-21 February 2026 at the first temporary indoor Olympic speed skating rink at Fiera Milano Rho, won headlinewise by Jordan Stolz.
Speed skiing
Speed skiing: the fastest non-motorized sport, straight-line descents on FIS-homologated pistes. World record 255.5 km/h (Simon Billy, 2023); women's record 248.270 km/h (Valentina Greggio, 2026); exhibition sport at Albertville 1992.
Speed standardization at 78 rpm
Speed standardization at 78 rpm is the convergence of early record speeds on 78 rpm, set at 77.92 rpm on 50 Hz and 78.26 rpm on 60 Hz supplies.
Speed table
A speed table is a flat-topped raised area across a roadway, a traffic calming device that reduces speeds by 4 to 11 mph and can be striped as a raised crosswalk.
Speed Up (motorcycle manufacturer)
Speed Up is an Italian racing motorcycle constructor founded in 2010 by former grand prix rider Luca Boscoscuro to build Moto2 chassis, rebranded Boscoscuro in 2021.
Speed wobble
Speed wobble, also known as tank slapper or death wobble, is a self-excited high-frequency oscillation of a bicycle or motorcycle's front steering assembly that can grow violent.
Speedball (drug)
Speedball: simultaneous stimulant-opioid use, classically heroin plus cocaine injected together; variants include goofball (heroin-methamphetamine) and super speedball (cocaine with fentanyl); higher overdose risk than either drug alone.
Speedbird
Speedbird is a stylized bird emblem designed by Theyre Lee-Elliott in 1932 for Imperial Airways. It later became the corporate logo for BOAC and British Airways.