Photovoltaics years in Northern Europe. The term "photovoltaic" comes from the Greek φῶς ("phōs") meaning "light", and from "volt", the unit of electro-motive force, the volt, which in turn comes from the last name of the Italian physicist Alessandro Volta, inventor of the battery (electrochemical cell). The term "photo-voltaic" has been in use in English since 1849. Photovoltaics are best known as a method for generating electric power by using solar cells to convert energy from the sun into a flow of electrons by the photovoltaic effect. Solar cells produce direct current electricity from sunlight which can be used to power
Bust of Alessandro Peretti di Montalto Bust of Alessandro Peretti di Montalto The Bust of Alessandro Peretti di Montalto is a portrait sculpture by the Italian artist Gian Lorenzo Bernini. Executed in 1622 and 1623, the sculpture is currently housed in the Kunsthalle Hamburg, in Germany. Although possibly mentioned by one of Bernini's early biographers, the bust had been considered lost and therefore makes no appearance in Rudolf Wittkower's catalogue of Bernini’s sculptures of 1955. However, the bust was identified in the 1980s and is now considered an authentic work by Bernini. Bernini had already been commissioned by Cardinal Montalto to create the Neptune and Triton