Some Obscurish facts
#1920
While known as a painter, sculptor, architect, and engineer, Leonard da Vinci was the first to record that the number of rings in the cross section of a tree trunk revealed its age. He also discovered that the width between the rings indicated the annual moisture
While known as a painter, sculptor, architect, and engineer, Leonard da Vinci was the first to record that the number of rings in the cross section of a tree trunk revealed its age. He also discovered that the width between the rings indicated the annual moisture