Robotic Arm Live Wallpaper description

A robotic arm is a type of mechanical arm, usually programmable, with similar functions
to a human arm; the arm may be the sum total of the mechanism or may be part of a more
complex robot. The links of such a manipulator are connected by joints allowing either
rotational motion (such as in an articulated robot) or translational (linear) displacement.
The links of the manipulator can be considered to form a kinematic chain. The terminus of
the kinematic chain of the manipulator is called the end effector and it is analogous to the human hand.