fifth force

n. Any of the hypothetical forces weaker than gravity that augment the four known fundamental forces.

fifth force

n (General Physics) a hypothetical non-Newtonian repulsive component of the force of gravity, postulated as an addition to the four known fundamental forces (gravitational, electromagnetic, strong, and weak)

fifth′ force′

n. a theoretical force in nature in addition to the strong and weak forces, gravitation, and the electromagnetic force. [1975–80]

fifth force

fifth force,

postulated fifth basic forceforce,
commonly, a "push" or "pull," more properly defined in physics as a quantity that changes the motion, size, or shape of a body. Force is a vector quantity, having both magnitude and direction.
..... Click the link for more information. of nature (the four known forces of nature are gravity, electromagnetism, and the strong and weak interactions). Proposed in 1986 to account for gravitational discrepancies observed during some experiments, it was said to result in a repulsive effect about 1,000 times less powerful than gravity, and its strength was said to fall off quickly with distance, having a range of about 700 ft (200 m). The results of some initial experiments supported the possibility that the fifth force might exist, but later investigations, including a large-scale, highly accurate oceanic experiment, provided no evidence of such a force.

单词	fifth force
释义	fifth force fifth force n. Any of the hypothetical forces weaker than gravity that augment the four known fundamental forces. fifth force n (General Physics) a hypothetical non-Newtonian repulsive component of the force of gravity, postulated as an addition to the four known fundamental forces (gravitational, electromagnetic, strong, and weak) fifth′ force′ n. a theoretical force in nature in addition to the strong and weak forces, gravitation, and the electromagnetic force. [1975–80] fifth force fifth force, postulated fifth basic forceforce, commonly, a "push" or "pull," more properly defined in physics as a quantity that changes the motion, size, or shape of a body. Force is a vector quantity, having both magnitude and direction. ..... Click the link for more information. of nature (the four known forces of nature are gravity, electromagnetism, and the strong and weak interactions). Proposed in 1986 to account for gravitational discrepancies observed during some experiments, it was said to result in a repulsive effect about 1,000 times less powerful than gravity, and its strength was said to fall off quickly with distance, having a range of about 700 ft (200 m). The results of some initial experiments supported the possibility that the fifth force might exist, but later investigations, including a large-scale, highly accurate oceanic experiment, provided no evidence of such a force.
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