| http://www.w3.org/ns/prov#value | - WEIGHTLESSNESS. (1) A condition in which no acceleration, whether of gravity or other force, can be detected by an observer within the system in question. (2) A condition in which gravitational and other external forces acting on a body produce no effect, either internal or external on the body. (3) The absence of gravitational pull on a body or object. (4) Condition in free fall or in space beyon
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