Glass harmonica Franklin and a fellow of the Royal Society, extended the experiments of Pockrich, contriving a set of glasses better tuned and easier to play. During the same decade, Christoph Willibald Gluck also attracted attention playing a similar instrument in England. Benjamin Franklin invented a radically new arrangement of the glasses in 1761 after seeing water-filled wine glasses played by Edmund Delaval at Cambridge in England in May 1761. Franklin worked with London glassblower Charles James to build one, and it had its world premiere in early 1762, played by Marianne Davies. Writing to his friend Giambatista Beccaria in Turin, Italy,
Swedish field artillery (early 18th century) regimental field artillery, but for more strategic purposes. The artillery during the early 18th century was developed further by Carl Cronstedt. He combined the powder and projectile into one single thin wooden cartridge called "geschwinda" shots (fast shots) and thereby succeeding in increasing the firing power to 10-12 rounds per minute. In addition, he increased the explosive power of the projectile itself. The range of the 6 pounders was 600–700 meters and the 3 pounders 225 meters. Screws and aiming devices, invented by Christopher Polhem, were introduced and used to aim and adjust the elevation of the pipe. To drag