The 4 moveable joints are called the Ball-and-socket, Hinge, Pivot, and Gliding joints.
A healthy knee is a highly moveable joint. It has the capacity to move forward some, back a lot, and also side to side.
diarthrosis - all synovial joints are freely moveable
A compass magnet or a compass needle.
safety Gate
The Chinese invented moveable type, and Johann Gutenberg, a monk from Germany, invented the printing press which used the Chinese's method of moveable type, just in a simplified and simpler way.
Johannes Gutenburg
-Johann Gutenberg
He created the moveable type in 1450
Gutenberg
He invinted the moveable-type printing,
Johann Gutenberg
Li Bo
Johann Gutenberg
Johannes Gutenberg
William Caxton
The Bible.