One of the most frightening and destructive phenomena of nature that man experiences is a severe earthquake and its terrible aftereffects. Since long before man existed, probably for more than 4 billion years, the forces within the Earth that produce earthquakes have played an active role in shaping the Earth's surface. These unpredictable catastrophic movements of the Earth have caused a great number of human casualties and extensive property damage.
In cinematography, a jib is a boom device with a camera on one end, and a counterweight and camera controls on the other. [1] It operates like a see-saw, but with the balance point located close to the counterweight, so that the camera end of the arm can move through an extended arc.
The jib is an operating arm that extends horizontally from the crane. The jib on a jib crane is a tilted strut that supports a fixed pulley block. Cables wrapped multiple times round the fixed block and round another block are attached to the load. type of crane, which has a horizontal member (known as jib or boom) that supports a moveable hoist fixed to a wall or to a floor-mounted pillar is known as jib crane.