Polonaise, Op. 89 (Beethoven) Polonaise, Op. 89 (Beethoven) The Polonaise in C major, Op. 89, by Ludwig van Beethoven is a polonaise for solo piano, published in 1815. He composed it in December 1814, at a time when the polonaise was becoming a popular dance and class marker among the European nobility. Beethoven was presented as a prominent artist at the ongoing Congress of Vienna, where he met the visiting Russian Empress Elizabeth Alexeievna. He dedicated the polonaise to the Empress, and was compensated with a sum of 50 ducats. The piece is Beethoven's first and only published standalone polonaise, and is notable as
Types of volcanic eruptions Types of volcanic eruptions Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three different types of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that