Glass harmonica
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The glass harmonica, also known as the glass armonica, glass harmonium, bowl organ, hydrocrystalophone, or simply the armonica or harmonica is a type of musical instrument that uses a series of glass
1900 illustration of a glass harmonica
Spinning glass disks (bowls) on a common shaft are arranged with the lower notes (larger disks) to the left and higher notes (smaller disks) to the right.
A glass harp, an ancestor of the glass armonica, being played in Rome. The rims of wine glasses filled with water are rubbed by the player's fingers to create the notes.
A modern glass armonica built using Benjamin Franklin's design
Benjamin Franklin
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Benjamin Franklin was an American polymath: a writer, scientist, inventor, statesman, diplomat, printer, publisher and political philosopher. Among the most influential intellectuals of his time, Fran
Portrait by Joseph Duplessis, 1785
An 1881 illustration of Franklin's birthplace on Milk Street in Boston
A May 2008 photograph of Franklin's birthplace in Boston, commemorated with a bust of Franklin atop the building's second-floor façade
La scuola della economia e della morale, an 1825 sketch of Franklin