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... during the past 20–30 years, the subject of has—as a result of adv — James E. Faller

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"... during the past 20–30 years, the subject of has—as a result of advances in measurement technologies—been transformed from a chiefly theoretical endeavor that explored beautiful theorems, involving the and equations, to an experimental science—a science that has come of age as one can now make real-time measurements at the levels at which geophysical happenings are taking place. And absolute gravimetry (along with very long baseline interferometry, global positioning satellites, satellite ranging, etc.) was and is contributing to this revolution."
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James E. Faller
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James E. Faller
James E. Faller
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James E. Faller was an American physicist and inventor who specialized in the field of gravity. He conceived the Lunar Laser Ranging Program, the goal of which, was to fire high powered laser beams at special retroreflectors placed on the Moon by Apollo program Astronauts. He invented a gravity motion sensor, called the Absolute Gravimeter, which is sensitive enough to detect changes in the local

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"Determinations of the fit into the oftentimes-unappreciated area of physics called precision measurement—an area which includes precision measurements, and . The determination of big G—a measurement which on the surface appears deceptively simple—continues to be one of s greatest challenges to the skills and cunning of s. In spite of the fact that, on the scale of the Universe, big Gs effects are so large as to single-handedly hold everything together, on the scale of an individual research laboratory, big Gs effects are so small that they go unnoticed…hidden in a background of much larger forces and noise sources. It is this ‘smallness’ that makes determining the precise value of this (seemingly unrelated to the rest of physics) fundamental constant so difficult."
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James E. Faller