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The elastic and inelastic collisions apparatus is a large apparatus to study elastic and inelastic collisions. It consists of a large frame carrying two beams from which two rows of six and two wooden balls, respectively, are suspended from pairs of strings. The instrument was often used with two elastic balls (of ivory) or inelastic balls (of wet clay), of equal or different mass. By changing the parameters of the experiments such as height of fall and mass, one could conduct a systematic investigation of collision-related phenomena. For example, when the row of balls is struck by one of the outermost balls, the row of balls remains motionless and the impulse is fully transmitted to the ball at the opposite end, which rebounds. As it falls back, the cycle continues in the opposite directi

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  • The elastic and inelastic collisions apparatus is a large apparatus to study elastic and inelastic collisions. It consists of a large frame carrying two beams from which two rows of six and two wooden balls, respectively, are suspended from pairs of strings. The instrument was often used with two elastic balls (of ivory) or inelastic balls (of wet clay), of equal or different mass. By changing the parameters of the experiments such as height of fall and mass, one could conduct a systematic investigation of collision-related phenomena. For example, when the row of balls is struck by one of the outermost balls, the row of balls remains motionless and the impulse is fully transmitted to the ball at the opposite end, which rebounds. As it falls back, the cycle continues in the opposite direction. This apparatus was illustrated by Jean-Antoine Nollet in Leçons de physique expérimentale (Paris, 1743–1748). In his description, Nollet claims to have merely altered and developed a model previously used by Edme Mariotte. The most sophisticated devices for studying elastic and inelastic collisions were built by Willem Jacob 's Gravesande and Petrus van Musschenbroek. The instrument is held in the Lorraine collections of the Museo Galileo in Florence. (en)
  • L'appareil pour étudier les chocs élastiques et inélastiques est un instrument conservé au Museo Galileo de Florence. Il est composé d'un grand châssis portant deux barres, auxquelles sont pendues par une suspension à deux fils six boules de bois alignées. L'instrument était souvent utilisé avec deux boules élastiques (en ivoire) ou inélastiques (en argile mouillée), à masse égale ou inégale. En modifiant les paramètres des expériences (hauteur de la chute, masse, etc.), on étudiait de manière systématique les phénomènes concernant les chocs. Par exemple, quand les boules alignées sont heurtées par la boule qui se situe à l'extrémité, la série de boules reste immobile et transmet intégralement l'impulsion à la boule située à l'extrémité opposée, qui rebondit. Cette dernière, retombant, amorce à nouveau le cycle dans le sens opposé. Cet appareil, qui provient des collections des Lorraine, fut illustré par Jean Antoine Nollet dans les Leçons de physique expérimentale (Paris, 1743-1748). Dans la description de l'instrument, Nollet affirme qu'il a simplement modifié et développé le modèle employé antérieurement par Edme Mariotte. Les appareils les plus sophistiqués pour l'étude des chocs élastiques et inélastiques furent réalisés par Willem Jacob's Gravesande et par Pieter van Musschenbroek. (fr)
  • L'apparecchio per studiare gli urti elastici e anelastici è uno strumento conservato al Museo Galileo di Firenze. È un grande apparecchio per lo studio degli urti elastici e anelastici. Si compone essenzialmente di un grande telaio recante due aste alle quali sono appese, con sospensione bifilare, rispettivamente, sei e due palle di legno allineate. Lo strumento veniva spesso utilizzato con due palle elastiche (di avorio) o anelastiche (di argilla bagnata), le cui masse potevano essere uguali o diverse. Modificando i parametri delle esperienze (altezza di caduta, masse, ecc.) venivano studiati sistematicamente i fenomeni relativi agli urti. Ad esempio, quando la fila di palle viene urtata da quella che si trova ad una sua estremità, la serie delle palle resta immobile e l'impulso viene integralmente trasmesso alla palla che si trova all'estremità opposta, che rimbalza. Quest'ultima, ricadendo, riavvia il ciclo in senso opposto. Proveniente dalle collezioni lorenesi, questo apparecchio fu illustrato da Jean Antoine Nollet nelle Leçons de physique expérimentale (Parigi, 1743-1748). Nella descrizione dello strumento Nollet afferma di aver semplicemente modificato e sviluppato un modello usato in precedenza da Edme Mariotte. Gli apparecchi più sofisticati per lo studio degli urti elastici e anelastici furono realizzati da Willem 's Gravesande e da Pieter van Musschenbroek. (it)
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  • The elastic and inelastic collisions apparatus is a large apparatus to study elastic and inelastic collisions. It consists of a large frame carrying two beams from which two rows of six and two wooden balls, respectively, are suspended from pairs of strings. The instrument was often used with two elastic balls (of ivory) or inelastic balls (of wet clay), of equal or different mass. By changing the parameters of the experiments such as height of fall and mass, one could conduct a systematic investigation of collision-related phenomena. For example, when the row of balls is struck by one of the outermost balls, the row of balls remains motionless and the impulse is fully transmitted to the ball at the opposite end, which rebounds. As it falls back, the cycle continues in the opposite directi (en)
  • L'appareil pour étudier les chocs élastiques et inélastiques est un instrument conservé au Museo Galileo de Florence. Il est composé d'un grand châssis portant deux barres, auxquelles sont pendues par une suspension à deux fils six boules de bois alignées. L'instrument était souvent utilisé avec deux boules élastiques (en ivoire) ou inélastiques (en argile mouillée), à masse égale ou inégale. En modifiant les paramètres des expériences (hauteur de la chute, masse, etc.), on étudiait de manière systématique les phénomènes concernant les chocs. Par exemple, quand les boules alignées sont heurtées par la boule qui se situe à l'extrémité, la série de boules reste immobile et transmet intégralement l'impulsion à la boule située à l'extrémité opposée, qui rebondit. Cette dernière, retombant, amo (fr)
  • L'apparecchio per studiare gli urti elastici e anelastici è uno strumento conservato al Museo Galileo di Firenze. È un grande apparecchio per lo studio degli urti elastici e anelastici. Si compone essenzialmente di un grande telaio recante due aste alle quali sono appese, con sospensione bifilare, rispettivamente, sei e due palle di legno allineate. Lo strumento veniva spesso utilizzato con due palle elastiche (di avorio) o anelastiche (di argilla bagnata), le cui masse potevano essere uguali o diverse. Modificando i parametri delle esperienze (altezza di caduta, masse, ecc.) venivano studiati sistematicamente i fenomeni relativi agli urti. Ad esempio, quando la fila di palle viene urtata da quella che si trova ad una sua estremità, la serie delle palle resta immobile e l'impulso viene int (it)
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  • Elastic and inelastic collisions apparatus (en)
  • Apparecchio per studiare gli urti elastici e anelastici (it)
  • Appareil pour étudier les chocs élastiques et inélastiques (fr)
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