Ernst Chladni at the understanding of electron orbitals. Since at least 1738, a musical instrument called a "Glasspiel" or "verrillon", created by filling beer glasses with varying amounts of water, was popular in Europe. The beer glasses were struck by wooden mallets shaped like spoons to produce "church and other solemn music". Benjamin Franklin was sufficiently impressed by a verrillon performance on a visit to London in 1757 that he created his own instrument, the glass armonica, in 1762. Franklin's armonica inspired several other instruments, including two created by Chladni. In 1791, Chladni invented the musical instrument called the "euphon" (not to
European hand fans in the 18th century century. During this time the Worshipful Company of Fan Makers tried to grow the English fan trade, but their success was small in comparison to the French industry. There were two main types of fans seen in Europe during the 18th century: the rigid (or fixed) fan and the folding fan. As its name implies, the rigid fan is stiff. Possible fan shapes are a leaf, a rectangle, or an oval. The fan is attached to a base where it is held. The folding fan was the most popular in Europe during the 18th century, a time known as the