What is Christiaan Huygens?
[[File:Christiaan Huygens-painting.jpeg|right|thumbnail|Painted portrait of Christiaan Huygens.]] '''Christiaan Huygens''' ({{Audio|ChristianHuygensPronunciation.ogg|listen}}) (April 14, 1629–July 8, 1695) was a [[Netherlands|Dutch]] [[physicist]], [[mathematician]] and [[astronomer]], born in [[The Hague]]. He was known for his idea that [[light]] was made of [[wave]]s. He discovered [[Saturn (planet)|Saturn]]'s largest [[Satellite (natural)|moon]] [[Titan (moon)|Titan]] in 1655. He also did detailed studies on Saturn's [[planetary ring|rings]], and in 1656, he discovered that they are made up of [[Rock (geology)|rocks]]. He also studied [[optics]] and [[pendulum clock]]s. {{commonscat}} {{authority control}} {{bio-stub}} {{DEFAULTSORT:Huygens, Christiaan}} [[Category:1629 births]] [[Category:1695 deaths]] [[Category:Dutch astronomers]] [[Category:Dutch mathematicians]] [[Category:Dutch inventors]] [[Category:People from The Hague]] [[Category:Dutch theoretical physicists]]