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
Peking glass carved away to produce a textured image. Peking glass is often made with different colored layers of glass, creating contrast when the outer layers are carved away. Historically, many pieces of Peking glass were made with yellow glass (dubbed "Imperial Yellow") due to the colors' strong association with the Qing Imperial clan of Aisin Gioro. In the late 19th century, glass-works in Czechoslovakia produced imitation Peking glass beads for use as costume jewelry. Peking glass Peking glass (also known as Qianlong Glass or Tao Liao Ping) is a form of Chinese glassware that originated in 18th century Peking, China. Originally