7 Famous Baseball Pitches (and some physics behind them)

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iStock

If you watch the playoffs from home, or listen in on the radio, you'll hear a lot of talk about what kind of pitch was just thrown, will be thrown, should be thrown, might be thrown, or, perhaps, shouldn't have been thrown. Cutters, sliders, sinkers—what are they exactly and what's the difference between them? Here's a little primer on six of the most popular pitches out there and a bit of the physics behind them:

1. Fastball - This is the basic, most important pitch in baseball. The first two fingers rest just on (or inside) the seams and the pitcher releases the pitch with the palm pretty much facing the batter, producing maximum velocity. How fast are we talking? Generally in the 90-95 mph range, though some pitchers have been known to hurl over 100 mph. Technically, what you see in the photo is called a two-seam fastball and produces a sidespin that causes the ball to cut in as it approaches the batter. There are other varieties, like the 4-seam fastball, which is thrown by holding the ball with the seams horizontal, rather than vertical. This produces backspin, which creates high pressure under the ball and low pressure on top resulting in the illusion of the ball rising (actually the ball isn't rising, just falling more slowly than it would normally). There's also a split-finger fastball where the first two fingers split, or straddle the seams, which causes the ball to drop a little as it approaches the plate. Despite the movement, the basic idea of a fastball is to overpower the batter, so he swings late and misses.

2. Sinker - If you've ever played wiffleball, you know the ball rises, falls, and curves in and away from a batter depending on where you position the air holes in the ball. Likewise, in baseball, a pitcher can create movement and variation in speed depending on how he releases the ball, or how he spins the ball. Off-speed pitches, like the sinker, are pitches that are released with the palm of the hand facing away from the pitcher. This causes the ball to sink as it approaches the batter. The idea here is to either get him to swing over the ball and miss, or, if he connects with the pitch, to produce a ground ball, rather than a line drive.

3. Changeup - A changeup is like a sinker, in that it's an off-speed pitch, only the palm is turned even further out. All off-speed pitches are similar in that they're thrown with less velocity than the fastball. But the batter doesn't know when one is coming because a good pitcher is able to use the same arm speed as he does for the fastball. So how does he throw it with less velocity? Simple: by pressing the baseball deep into his palm. Less finger contact means less torque and less velocity. So, if a batter is expecting a fastball, slowing down, or "changing up" the speed to, say, 87 mph can trip him up and he'll swing ahead of the ball. Great pitchers can build an entire career on the changeup because they're able to slow it down all the way to around 80 mph. If they can throw a fastball around 95 mph, that's a whopping 15 mph slower and really confuses the batter.

4. Screwball - This is another off-speed pitch that not only sinks, but moves from the pitcher's left side to the right as it approaches the batter. The palm is again pronated away from the pitcher, even further than the sinker and changeup. As the pitcher releases the ball, he twists the ball like a corkscrew. A left-handed batter will see the ball break away from him and a right-handed batter will experience the opposite, as the ball breaks in on him (the reverse is true if the pitcher is left-handed, of course)

5. Cutter - Turning the palm in the opposite direction produces a series of pitches known as breaking pitches. The further the palm is rotated toward the pitcher, the more movement (in most cases, but not all). The first stop over from the fastball is the cutter, which is like a fastball, only it breaks in ever so slightly and is generally thrown a few mphs slower than a fastball.

6. Slider - Basically the same thing as a cutter, a slider is thrown with less velocity than the former and the palm is rotated further toward the pitcher. The slower speed means there's more time for the ball to move, or slide, from one side of the plate to the other.

7. Curveball - A good curveball can be devastating, and also fun to watch. These are the pitches that appear to arc up toward the batter's chest (or even head) before dropping into the strike zone like a bomb as they reach the plate. Of course, not every successful curveball pitcher throws the large arc variety and they need not be so dramatic. Even a small arc keeps the hitter off balance. So how is the amazing trajectory accomplished? The pitcher turns his palm in so far that his hand looks like the letter "C." He then flicks his wrist as he releases the ball (the opposite direction from the screwball) creating topspin. The more topspin, the greater the air pressure difference between the top and bottom of the ball, and the greater the break.

Friday’s Best Amazon Deals Include Digital Projectors, Ugly Christmas Sweaters, and Speakers

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As a recurring feature, our team combs the web and shares some amazing Amazon deals we’ve turned up. Here’s what caught our eye today, December 4. Mental Floss has affiliate relationships with certain retailers, including Amazon, and may receive a small percentage of any sale. But we only get commission on items you buy and don’t return, so we’re only happy if you’re happy. Good luck deal hunting!

10 Amazing Facts About Bruce Lee On His 80th Birthday

Photo courtesy of The Bruce Lee Family Archive
Photo courtesy of The Bruce Lee Family Archive

Bruce Lee is one of pop culture's most multifaceted icons. Legions of fans admire him for his movies, his martial arts prowess, his incomprehensible physical fitness, his championing of Chinese culture, and even his philosophies on life. Yet for all the new ground Lee broke, most of his recognition only came after his death at the age of 32. Read on to learn more about the life of this profound, if enigmatic, superstar.

1. Bruce Lee’s first starring role in a movie came when he was just 10 years old.

In 1950’s The Kid, a pre-teen Bruce Lee played the role of Kid Cheung, a streetwise orphan and wry troublemaker, based on a comic strip from the time. Starring opposite Lee, playing a kindly factory owner, was his father, Lee Hoi-chuen, who also happened to be a famous opera singer. (Bruce Lee was actually born in San Francisco while his father was there on tour; Lee would move back to the U.S. in 1959).

According to Lee biographer Matthew Polly, the movie was a big enough success in China to earn sequel consideration. There was just one problem: A young Bruce Lee was getting into fights at school and out on the streets, so his father forbid him from acting again until he straightened up—which, of course, didn’t wind up happening.

2. Bruce Lee was deemed physically unfit for the U.S. Army.

While he may have walked around with body fat in the single digits and could do push-ups using only two fingers, Lee still managed to fail a military physical for the U.S. draft board back in 1963. Despite being an adherent to physical fitness all his adult life, it was an undescended testicle that kept him from fighting for Uncle Sam in Vietnam.

3. Bruce Lee was an exquisite cha-cha dancer.

Long before he was known for breakneck fight choreography, Bruce Lee’s physical skills were focused on the dance floor. More specifically, the cha-cha. In Polly’s book, Bruce Lee: A Life, the author explains that the dance trend made its way from Cuba through the Philippines and soon landed in China. And once the cha-cha settled into the Hong Kong social scene, it didn’t take long for youth dance competitions to spring up. Lee had been taking part in cha-cha dancing since the age of 14, and in 1958, he won the Crown Colony Cha-Cha Championship. Foreshadowing his later dedication to martial arts, Lee would keep crib notes of all 108 different cha-cha steps in his wallet so that he could obsessively memorize them.

4. Bruce Lee refused to lose a fight to Robin.

The Green Hornet aired its first episode in September 1966, with Bruce Lee as the Hornet's (Van Williams) lightning-quick sidekick, Kato. The series would immediately be compared to Batman, ABC's other costumed crime-fighting show, and it wouldn't be long before a two-part crossover episode was in the works. And as heroes do, before they teamed up, they first had to fight each other. According to Newsweek, since Batman was by far the more popular show, the script featured a fight between Burt Ward's Robin and Bruce Lee's Kato that was set to end with the Boy Wonder getting the upper hand. But who would really buy that?

Well, Lee certainly didn't—and he knew no one else would, either. Williams later recalled that Lee read the script and simply said, "I'm not going to do that," and walked off. Common sense soon prevailed ... sort of. The script was rewritten to change the ending—not to a Kato K.O., but to a more diplomatic draw. Though The Green Hornet was Lee's first big break in the United States, the series itself lasted only 26 episodes.

5. Bruce Lee trained numerous Hollywood stars.

As Bruce Lee worked to become a big-screen heavyweight, he made a living as a martial arts trainer to the stars. Among Lee’s students were Steve McQueen, James Coburn, James Garner, Roman Polanski, and Sharon Tate. For his services, Lee was known to charge about $275 per hour or $1000 for 10 courses. McQueen and Coburn grew so enamored with Lee over the years that they remained close friends until his death in 1973, with both men serving as pallbearers at Lee's funeral (alongside Chuck Norris).

6. Roman Polanski may have (briefly) thought Bruce Lee murdered Sharon Tate.

In addition to providing Roman Polanski and his wife Sharon Tate with kung fu lessons, Bruce Lee also lived near the couple in Los Angeles when Tate and four others, including Lee’s close friend Jay Sebring, were murdered by the Manson Family in August 1969. It would be months before the Manson Family was arrested for the murders, but in the meantime, according to an article from Esquire, Polanski had grown obsessed with finding a suspect, looking for potential perpetrators even amongst his own inner circle.

During one kung fu lesson in the months after the murders, Lee had mentioned to Polanski how he had recently lost his glasses, which immediately piqued the director’s interest. A mysterious pair of horn-rimmed glasses had been found at the murder scene near his wife’s body, after all. Polanski had even purchased a gauge to measure the lenses and find out the exact prescription so that he could do his own detective work, according to The New York Post.

The director, without giving himself away, offered to bring Lee to his optician to get a new pair—this would allow him to hear Lee’s prescription firsthand and determine if the specs discovered at the crime scene belonged to him. It turned out Lee’s prescription didn’t match, and Polanski never told his friend about his suspicions.

7. Bruce Lee had his sweat glands removed.

Bruce Lee in Enter the Dragon (1973).Warner Home Video

Bruce Lee brought an impeccable physique to the screen that was decades ahead of its time. But because his roles required so much physicality, he would be drenched with sweat while filming. And apparently, the martial arts pioneer loathed the sweat stains that would show up on his clothing as a result. His solution? In 1973, Lee actually underwent a procedure to surgically remove the sweat glands from his armpits to avoid the fashion faux pas from showing up on camera.

8. Bruce Lee’s cause of death still raises questions.

Bruce Lee’s death at the age of 32 on July 20, 1973, was officially ruled the result of a cerebral edema, or swelling of the brain. Lee had complained about headaches on the day of his death, and was given a painkiller by Betty Ting Pei—an actress who claimed to be Lee's mistress—before lying down for a nap. He never woke up.

Though many reports at the time suggested Lee had an allergic reaction to an ingredient in the painkiller, Polly points to a mystery that began on May 10, 1973, when the star previously collapsed in a hot recording studio while dubbing new dialogue for Enter the Dragon.

In Polly’s opinion, Lee’s collapse had to do with heatstroke, since his stint in an overheated recording studio was compounded by a lack of sweat glands that prevented his body from cooling off naturally. Heatstroke can also cause swelling in the brain, much like was found during Lee’s autopsy. And Dr. Lisa Leon, an expert in hyperthermia at the U.S. Army Research Institute of Environmental Medicine, told Polly, “A person who has suffered one heat stroke is at increased risk for another" and that there may be long-term complications after the initial incident.

9. Footage from Bruce Lee’s Funeral was used in 1978’s Game of Death.

At the time of his death, Bruce Lee was involved in numerous projects, including the movie that would become Game of Death, his next directorial effort. According to Vice, there wasn’t much completed on the film by the time of Lee’s passing—there were some notes, a story outline (which simply read “The big fight. An arrest is made. The airport. The end.”), and 40 minutes of footage, including Lee’s now-iconic fight against NBA great Kareem Abdul-Jabbar.

Usually, a project in that situation would just be a lost cause, but production company Golden Harvest wanted to salvage what they could, so they hired Enter the Dragon director Robert Clouse to put together ... something. The result was a Frankenstein’s monster of a film, comprised of 11 minutes of existing footage Lee shot, overdubbed clips from his previous movies, and stand-ins to fill out certain scenes. The director even resorted to using an unfortunate Bruce Lee cardboard cutout to complete one shot.

That’s not even the top rung on the ladder of poor taste: When the movie called for Lee’s character to fake his death, they used footage from his actual funeral to realize the scene, complete with waves of mourners, pallbearers, and closeups of Lee’s open casket.

10. Bruce Lee’s posthumous success resulted in its own sub-genre.

Lee’s career was exploding in China and gaining momentum in the United States by 1973, but he passed away just a month before his biggest hit was released: Enter the Dragon. The movie, which grossed more than $200 million at the worldwide box office, catapulted the late Lee to icon status. But with the star himself no longer around to capitalize, there would soon be a wave of knockoff films and wannabes looking to take advantage of the martial arts craze.

Both affectionately and derisively known as “Bruceploitation” films, this strange sub-genre of martial arts cinema gave life to z-movie oddities like Re-Enter the Dragon and Enter the Game of Death, starring the likes of—and we’re not kidding—Bruce Le and Bruce Li. Jackie Chan was even roped into a few of these movies, like 1976's New Fist of Fury. In 1980, Bruceploitation even went meta with The Clones of Bruce Lee, starring Dragon Lee, Bruce Le, and Bruce Lai, who play genetic reconstructions of the late actor after scientists harvest his DNA.