A statue is a sculpture in the round representing a person or persons, an animal, an idea or an event, normally full-length, as opposed to a bust, and at least close to life-size, or larger. Its primary concern is representational. The definition of a statue is not always clear-cut. A small statue, usually small enough to be picked up, is called a statuette or figurine. Many statues are built on commission to commemorate a historical event, or the life of an influential person. Many statues are intended as public art, exhibited outdoors or in public buildings for the edification of passers-by, with a larger magnitude than normal words could ever have for the common man.

The Kelvin-Helmholtz Wave Cloud

The Kelvin-Helmholtz wave cloud looks like crashing ocean waves. These beautiful clouds are named after German physicist Hermann von Helmholtz and British physicist Lord Kelvin, because they form when two different layers of air are moving past each other at different speeds. The above layer is faster. Some parts of the boundary – a shearing layer – move down, and others move up.