An Inertial Clock for Precision Measurements |
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Page 5
... clock ( Ritter , 1982 ) . Two requirements of such an inertial clock are that the rotor be spun in an high vacuum and that the bearing drag on the rotor must be extremely small . The vacuum requirement can be eased by forcing the ...
... clock ( Ritter , 1982 ) . Two requirements of such an inertial clock are that the rotor be spun in an high vacuum and that the bearing drag on the rotor must be extremely small . The vacuum requirement can be eased by forcing the ...
Page 6
... clock comparison experiments such as null gravitational redshift experiments . A particular motivation for constructing an inertial clock is the need for a need for a third clock to add necessary redundancy to null gravitational ...
... clock comparison experiments such as null gravitational redshift experiments . A particular motivation for constructing an inertial clock is the need for a need for a third clock to add necessary redundancy to null gravitational ...
Page 7
... inertial clock were apparent , the most prominent of these being an excessive drag on the rotor and a torsional ... inertial clock , with particular emphasis on minimizing or eliminating the problems of the excessive drag and the ...
... inertial clock were apparent , the most prominent of these being an excessive drag on the rotor and a torsional ... inertial clock , with particular emphasis on minimizing or eliminating the problems of the excessive drag and the ...
Common terms and phrases
achieved addition adjusted aluminum angular velocity apparatus applied bearing drag behavior Bernard calculated caused Cheung codecay run coefficient coils constant control run corotation runs decay decrease dependence derivative feedback described determined difference discussed double magnetic suspension double suspension drift drive effects equations expected experimental factor follow frequency stability gas drag given height Helmholtz coils improvements increased inertial clock interrotor torsional coupling Leyh lifting force light limit lower magnetic field measured motion noise Nref observed oscillations parameters performed period averages Plot pole piece position precision predicted presented pressure proof rotor period properties proportional feedback readjustment reduce reference angle relative residuals respectively rotational rotor angular rotor decay rotor suspension shown shows shroud rotor signal simulation spindown run Studies Table temperature torque typically upper vacuum chamber variations varied versus yielding zero