Have a look on this website:
http://www.research.philips.com/password/archive/7/natmot.html
its mean Digital Natural Motion
Digital cinematography is a higher tech version of filming motion pictures and/or digital images. Today, most motion picture films are captured in this manner.
Aristotle classified motion into natural motion and violent motion. Natural motion was intrinsic to an object's nature, such as an apple falling from a tree. Violent motion was caused by an external force acting on an object, like pushing a ball.
According to Aristotle, the two types of motion are natural motion and violent motion. Natural motion is the inherent tendency of objects to move towards their natural place in the universe, while violent motion is the result of an external force acting upon an object to cause it to move.
A motion picture is a story told with words, music and action, usually by actors. A digital movie is one way of distributing a motion picture. Initially all motion pictures were recorded, distributed and exhibited on film. Then it became possible to convert the many still images that make up a motion picture on film into a digital file that can be played by computers. Then motion pictures could be distributed on CDs and DVDs, which are digital recording media. But film was still being used to display a motion picture to large groups in theaters. More recently it has been possible to use digital cameras to record the actors telling the story, so now in addition to DVD distribution, the motion pictures can be displayed to large audience in theaters using digital technology.
Aristotle distinguished natural motion as the inherent tendency of objects to move towards their natural place in the cosmos, while violent motion is imposed on objects externally by an external force. Natural motion is seen as orderly and goal-oriented, while violent motion is considered irregular and disruptive.
Nothing. The natural tendency of an object in motion, is to stay in motion.
Aristotle categorized motion into natural motion and violent motion. Natural motion occurs without external force, such as an apple falling down due to gravity. Violent motion is caused by an external force, like pushing a rock.
Aristotle believed that all motion required a mover and that natural motion was caused by inherent tendencies in objects to seek their natural place. He distinguished between natural motion (up and down) and violent motion (forced movement). Aristotle also argued that an object's speed of motion was proportional to the force acting upon it.
Analog, Physical, Natural
The ancient Greek philosopher Aristotle was the first to suggest that uniform motion is natural, based on his theory of motion where objects seek their natural place. This idea was later refined by the understanding of inertia by Galileo and Newton.
Natural motion is the motion that an object would undergo in the absence of any external force, such as falling downward. Violent motion is the motion caused by an external force acting on an object, such as pushing or pulling. In the context of Aristotelian physics, these terms were used to describe different types of motion observed in the natural world.