- Tonian (Wikipedia)
The Tonian (from Ancient Greek: τόνος, romanized: tónos, meaning “stretch”) is the first geologic period of the Neoproterozoic Era. It lasted from 1000 to 720 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined by the ICS based on radiometric chronometry. The Tonian is preceded by the Stenian Period of the Mesoproterozoic Era and followed by the Cryogenian.
- Frederick the Great Playing the Flute at Sanssouci (Wikipedia)
Frederick the Great Playing the Flute at Sanssouci or The Flute Concert is an 1852 oil on canvas history painting by the German painter Adolph Menzel. It depicts Frederick the Great, King of Prussia playing the flute at an evening concert at Sanssouci and is now in the Alte Nationalgalerie in Berlin.
