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It all comes down to fluff. Subscribe and turn on notifications (🔔) so you don't miss any videos: http://goo.gl/0bsAjO Before each serve, most professional tennis players go through a ritual to get in the zone. Novak Djokovic will bounce the ball with his racket, then with his hand. Rafael Nadal will usually pull his shorts and the sleeves around his shoulders, then touch his nose and tuck his hair behind his ears. All very distinct routines. But there’s one tennis ritual nearly every pro tennis player does: choosing a specific tennis ball. A common belief among players is that the ball they choose can help them win. But there’s real physics at play behind this ritual — and It all comes down to the fuzz. For a faster serve, players try to find a compact ball. For a slower serve, they feel for more fuzz. The idea is that a fluffier ball is more likely to be slowed by drag as it travels through the air — and that choosing the right level of fuzz can help the serving player defeat their opponent. More information on the aerodynamics of sports balls: https://people.stfx.ca/smackenz/courses/HK474/Labs/Jump%20Float%20Lab/Mehta%201985%20Aerodynamics%20of%20sports%20balls.pdf Michael Kosta's podcast, Tennis Anyone: https://open.spotify.com/show/2ca3fTFmcoNgpQe6SD5XQa Subscribe to our channel! http://goo.gl/0bsAjO Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com. Watch our full video catalog: http://goo.gl/IZONyE Follow Vox on Facebook: http://goo.gl/U2g06o Or Twitter: http://goo.gl/XFrZ5H
In 1910, boxing heavyweight champion Jack Johnson defeated Jim Jeffries in the "Battle of the Century," and the nation erupted. Subscribe to Vox and turn on notifications (🔔) so you don't miss any videos: http://goo.gl/0bsAjO​ On December 26, 1908, American boxer Jack Johnson became the first Black heavyweight champion of the world, after defeating defending champion Tommy Burns in a title fight in Sydney, Australia. Black fighters were typically denied the chance to win the heavyweight title, a de-facto line of segregation that was known as “the color line.” So when Burns accepted Johnson’s challenge and lost, the film that was distributed around the fight proved controversial. The white boxing world set out to find a white heavyweight to beat Johnson and take back the title. That white fighter ended up being James Jeffries, a former heavyweight champion who had retired undefeated. Their fight, hyped as the “Battle of the Century,” took place in Reno, Nevada, on July 4, 1910, in front of 20,000 mostly-white spectators and nine motion picture cameras. Throughout the nation, many thousands more listened to live telegram bulletins of each round. Johnson beat Jeffries easily, and, as a result, racist mob violence broke out across the country, and Black Americans celebrating Johnson’s win were attacked, and some were killed. The film of the fight became notorious worldwide and was the most talked-about motion picture of its time. Johnson lost the heavyweight title in 1915 after successfully defending it eight times, but remained an inspiration for many fighters to come. Further reading: Fight Pictures: A History of Boxing and Early Cinema, by Dan Streible https://www.ucpress.edu/book/9780520250758/fight-pictures Prizefighting and the Birth of Movie Censorship, by Barak Orbach https://digitalcommons.law.yale.edu/yjlh/vol21/iss2/3/ Jack Johnson, Rebel Sojourner: Boxing in the Shadow of the Global Color Line, by Theresa Runstedtler https://www.ucpress.edu/book/9780520280113/jack-johnson-rebel-sojourner Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com​. Watch our full video catalog: http://goo.gl/IZONyE​ Follow Vox on Facebook: http://goo.gl/U2g06o​ Or Twitter: http://goo.gl/XFrZ5H
How do you make a classic children’s game into a sport? The founders of World Chase Tag figured it out. Check out their YouTube channel for more: https://www.youtube.com/channel/UCvo8BitSExXgP-eYjXwJvgw And check out JimmytheGiant’s channel (Kieren Owen) for expert parkour videos: https://www.youtube.com/channel/UCWYRT-NhEqkZ_afrqEgxYOQ Correction: At 2:13, we wrote Parkour DBX. It should read "Parkour DXB." Christian Devaux and Damien Devaux founded World Chase Tag after being inspired by their own backyard games of tag. From there, it grew from a hobby into a sport with an athletic talent pool — parkour athletes — that had long been ignored. Now there are terms, strategies, and even a media infrastructure surrounding the classic playground game. Strategies for World Chase Tag draw from the parkour tradition but also from influences as varied as ball sports and gymnastics. It’s a game that’s quickly developing a vocabulary, from “idling” to “herding,” as well as unique personalities. Recently, World Chase Tag made its American television debut on NBC SN. But for the Devaux brothers, it all stems from that initial passion for a backyard game that was exciting enough to become a sport watched by millions. Subscribe to our channel! http://goo.gl/0bsAjO Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com. Watch our full video catalog: http://goo.gl/IZONyE Follow Vox on Facebook: http://goo.gl/U2g06o Or Twitter: http://goo.gl/XFrZ5H
Tommie Smith and John Carlos’s 1968 US national anthem protest, explained. Become a Video Lab member! http://bit.ly/video-lab The image of sprinters Tommie Smith and John Carlos raising their fists during a medal ceremony at the 1968 Olympics in Mexico City is an enduring image of silent protest. But the key to understanding it goes beyond the black-gloved fists. All three medal winners, including silver medalist Peter Norman of Australia, wore buttons that read “Olympic Project for Human Rights.” The Olympic Project for Human Rights (OPHR) was a coalition of prominent athletes formed in 1967 that threatened to boycott participating in the upcoming Olympic games, in order to draw attention to systemic racism in the United States. The group, led by professor Harry Edwards, ultimately voted to compete in the games and hold their demonstrations there, which led to the now-iconic display on the medal stand following the men’s 200-meter final. This act got Smith and Carlos kicked off the team, but left a lasting legacy on making political statements through sport. Additional reading: The Revolt of the Black Athlete, by Dr. Harry Edwards https://archive.org/details/TheRevoltOfTheBlackAthlete Darkroom is a history and photography series that anchors each episode around a single image. Analyzing what the photo shows (or doesn't show) provides context that helps unravel a wider story. Watch previous episodes here: https://www.youtube.com/watch?v=ddiOJLuu2mo&list=PLJ8cMiYb3G5ce8J4P5j5qOEtYR94Z3DQs Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com. Watch our full video catalog: http://goo.gl/IZONyE Follow Vox on Facebook: http://goo.gl/U2g06o Or Twitter: http://goo.gl/XFrZ5H