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Ball Of Wind
Follis, a term used in the Ancient Rome, or Ball of Wind (''pilota de vent''), a term used in the 15th and 16th centuries in Spain and Italy, was a hollow ball, inflated with air under pressure, which allowed the ball to jump and bounce when impacting at a certain speed with any solid body. The different types of balls of wind were commonly used to play a variety of ball games that were popular on that particular period of time. Today, although many of the existing balls are inflated with air, the modern name is simplified to "ball," regardless of the system. History There are studies that deal with this issue in some depth, citing numerous documents from famous authors (Alfonso X of Castile who banned the "juego de pelota" with imprisonment, Desiderius Erasmus, Rabelais, Calderon de la Barca, Baltasar de Castiglione, and Antonio da Salò Scaino). Trattato del giuoco della palla di messer Antonio Scaino da Salò, diuiso in tre parti. Con due tauole, l'vna de' capitoli, l'altra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palestra (Gimnasio) Antigua Grecia
The Palestra, often called the Cathedral of College Basketball, is a historic arena and the home gym of the Penn Quakers men's and women's basketball teams, volleyball teams, wrestling team, and Philadelphia Big 5 basketball. Located at 235 South 33rd St. in Philadelphia, Pennsylvania on the campus of the University of Pennsylvania, near Franklin Field in the University City section of Philadelphia, it opened on January 1, 1927. The Palestra has been called "the most important building in the history of college basketball" and "changed the entire history of the sport for which it was built". The arena originally seated about 10,000, but now seats 8,725 for basketball. The Palestra is famed for its close-to-the-court seating with the bleachers ending at the floor with no barrier to separate the fans from the game. At the time of its construction, the Palestra was one of the world's largest arenas. It was one of the first steel-and-concrete arenas in the United States and also one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guitar
The guitar is a fretted musical instrument that typically has six strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected strings against frets with the fingers of the opposite hand. A plectrum or individual finger picks may also be used to strike the strings. The sound of the guitar is projected either acoustically, by means of a resonant chamber on the instrument, or amplified by an electronic pickup and an amplifier. The guitar is classified as a chordophone – meaning the sound is produced by a vibrating string stretched between two fixed points. Historically, a guitar was constructed from wood with its strings made of catgut. Steel guitar strings were introduced near the end of the nineteenth century in the United States; nylon strings came in the 1940s. The guitar's ancestors include the gittern, the vihuela, the four- course Renaissance guitar, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augurio Perera
Juan Bautista Luis Augurio Perera (c.1822 – after 1889), known as Augurio Perera, was a Spanish-born merchant and sportsman based in England, credited alongside his friend Major Harry Gem as a lawn tennis pioneer.Rowley, Andrew,Gem, Thomas Henry (1819–1881), ''Oxford Dictionary of National Biography'', Oxford University Press, 2004, accessed 10 July 2007Tyzack, Anna''Country Life'', 22 June 2005 Life Perera was born in Spain in around 1822. He moved to England with his parents Augurio and Francisca at the age of four, and the family lived in London for ten years, before moving to Birmingham in 1836. After the rest of the family relocated to Manchester in 1839, Perera remained in the Midlands, becoming naturalised in 1856, settling in the Edgbaston area of Birmingham and establishing a successful business importing Spanish merchandise.Osman, Arthur "Lawn tennis remembers its founding fathers", ''The Times'', Thursday 10 June 1982 His younger brothers, Pedro and Frederico, bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball
A ball is a round object (usually spherical, but can sometimes be ovoid) with several uses. It is used in ball games, where the play of the game follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for simpler activities, such as catch or juggling. Balls made from hard-wearing materials are used in engineering applications to provide very low friction bearings, known as ball bearings. Black-powder weapons use stone and metal balls as projectiles. Although many types of balls are today made from rubber, this form was unknown outside the Americas until after the voyages of Columbus. The Spanish were the first Europeans to see the bouncing rubber balls (although solid and not inflated) which were employed most notably in the Mesoamerican ballgame. Balls used in various sports in other parts of the world prior to Columbus were made from other materials such as animal bladders or skins, stuffed with various materials. As balls are one o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball Game
This is a list of ball games and ball sports that include a ball as a key element in the activity, usually for scoring points. Ball games Ball sports fall within many sport categories, some sports within multiple categories, including: *Bat-and-ball games, such as cricket and baseball. *Invasion games, such as football and basketball. *Net and wall games, such as volleyball. **Racket sports, such as tennis, table tennis and badminton. *Throwing sports, such as dodgeball and bocce. **Cue sports, such as pool and snooker. **Target sports, such as golf and bowling. * Hand and ball-striking games, such as various handball codes, rebound handball, and four square. Popular ball games Games that are similar and have a common reference are grouped under the primary name such as bowling, football and hockey. A - E * Angleba * Apalachee ball game ** Crossminton * Bandy ** Rink bandy *** Rinkball * Baseball ** Baseball5 * Basketball ** 3x3 (basketball) ** Wheelchair basketball * Basque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palazzo Della Pilotta
The Palazzo della Pilotta is a complex of edifices located between Piazzale della Pace and the Lungoparma in the historical centre of Parma, region of Emilia Romagna, Italy. Its name derives from the game of pelota played at one time by Spanish soldiers stationed in Parma. History Built around 1583, during the last years of reign of Duke Ottavio Farnese, it developed around the corridor (''Corridore'') which connected the keep (''Rocchetta'', traces of which can be seen next the river Parma) to the Ducal Palace: the latter, begun in 1622 under Duke Ranuccio I, was never completed. the façade on the ''Piazza della Ghiaia'' is missing and the annexed Dominican church of St. Peter was demolished only in recent times. The existing complex includes three courts: the ''Cortile di San Pietro Martire'' (now best known as ''Cortile della Pilotta''), ''Cortile del Guazzatoio'' (originally ''della pelota'') and the ''Cortile della Racchetta''. The Pilotta was to house a large hall, later ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leather
Leather is a strong, flexible and durable material obtained from the tanning, or chemical treatment, of animal skins and hides to prevent decay. The most common leathers come from cattle, sheep, goats, equine animals, buffalo, pigs and hogs, and aquatic animals such as seals and alligators. Leather can be used to make a variety of items, including clothing, footwear, handbags, furniture, tools and sports equipment, and lasts for decades. Leather making has been practiced for more than 7,000 years and the leading producers of leather today are China and India. Animal rights groups claim that modern commercial leather making and the consumption of its products is unethically killing animals. According to the life-cycle assessment (LCA) report for the United Nations Industrial Development Organization, 99% of the raw hides and skins used in the production of leather derive from animals raised for meat and/or dairy production. Critics of tanneries claim that they engage in uns ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juan Valverde De Amusco
Juan Valverde de Amusco (or "de Hamusco") (c. 1525-?) was born in the Crown of Castille in what is now Spain 1525 and studied medicine in Padua and Rome under Realdo Columbo and Bartolomeo Eustachi. He published several works on anatomy, including ''De animi et corporis sanitate tuenda libellus'' (Paris, 1552). Valverde's most famous work was ''Historia de la composicion del cuerpo humano'', first published in Rome, 1556. All but four of its 42 engraved copperplate illustrations were taken almost directly from Andreas Vesalius's ''De humani corporis fabrica''. Vesalius bitterly commented on Valverde's plagiarism, accusing him of having performed very few dissections himself. Occasionally, however, Valverde corrected Vesalius' images, as in his depictions of the muscles of the eyes, nose, and larynx. One of Valverde's most striking original plates is that of a muscle figure holding his own skin in one hand and a knife in the other, which has been likened to Saint Bartholomew in T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flexibility
Stiffness is the extent to which an object resists deformation in response to an applied force. The complementary concept is flexibility or pliability: the more flexible an object is, the less stiff it is. Calculations The stiffness, k, of a body is a measure of the resistance offered by an elastic body to deformation. For an elastic body with a single degree of freedom (DOF) (for example, stretching or compression of a rod), the stiffness is defined as k = \frac where, * F is the force on the body * \delta is the displacement produced by the force along the same degree of freedom (for instance, the change in length of a stretched spring) In the International System of Units, stiffness is typically measured in newtons per meter (N/m). In Imperial units, stiffness is typically measured in pounds (lbs) per inch. Generally speaking, deflections (or motions) of an infinitesimal element (which is viewed as a point) in an elastic body can occur along multiple DOF (maximum of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Check Valve
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal. An important concept in check valves is the cracking pressure which is the minimum differential upstream pressure between inlet and outlet at which the valve will operate. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfonso I D'Este
Alfonso d'Este (21 July 1476 – 31 October 1534) was Duke of Ferrara during the time of the War of the League of Cambrai. Biography He was the son of Ercole I d'Este, Duke of Ferrara and Eleanor of Naples and became duke on Ercole's death in January 1505. In the first year of his rule he uncovered a plot by his brother Ferrante and half-brother Giulio d'Este, directed against him and his other brother Ippolito. In September 1506 a trial for lèse majesté and high treason was held and, as expected, the death sentence was passed, but just as Ferrante and Giulio were about to mount the gallows they were informed that the duke had commuted their sentence to life imprisonment. They were led away to two cells in the Torre dei Leoni. Ferrante died in his cell after 34 years of imprisonment, while Giulio held on until he was pardoned in 1559, after 53 years of imprisonment. After his release, Giulio was ridiculed in the streets of Ferrara for his outdated clothes and died in 1561 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juan Luis Vives
Juan Luis Vives March ( la, Joannes Lodovicus Vives, lit=Juan Luis Vives; ca, Joan Lluís Vives i March; nl, Jan Ludovicus Vives; 6 March 6 May 1540) was a Spanish (Valencian) scholar and Renaissance humanist who spent most of his adult life in the Southern Netherlands. His beliefs on the soul, insight into early medical practice, and perspective on emotions, memory and learning earned him the title of the "father" of modern psychology. Vives was the first to shed light on some key ideas that established how psychology is perceived today. Early life Vives was born in Valencia to a family which had converted from Judaism to Christianity. As a child, he saw his father, grandmother and great-grandfather, as well as members of their wider family, executed as Judaizers at the behest of the Spanish Inquisition; his mother, born 1473, was acquitted but died of the plague in 1508, when he was 15 years old, shortly thereafter, he left Spain never to retur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
