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On the rotation axis of comet Halley
Nature, 1988The observations of comet Halley by the Halley Multicolour Camera (HMC) on board the European Space Agency's Giotto spacecraft were supported by an extensive ground-based observational programme using the same filter set1. The intention was to place the transitory but detailed observations of the encounter in the frame of ground-based observations ...
H. U. Keller, N. Thomas
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Mercury's rotation axis and period
Icarus, 1976Recent measurements made from high-resolution Mariner 10 photography of the planet Mercury yield a rotation period of 58.6461 + or 0.005 days, in excellent agreement with the period required for a precise 2/3 resonance with its orbital period (58.6462 days).
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Accuracy of Rotation around an Axis
Review of Scientific Instruments, 1968The rotation of a rigid body around an axis and its deviation from pure rotation are discussed. It is shown that the determination of this deviation requires the measurement of the position of three points of the body in three dimensions. It is also shown that accurate determination of this deviation for the purpose of applying corrections to the ...
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The primeval axis rotation of the Moon
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1984Abstract The palaeopoles of the Moon have been calculated from the palaeomagnetic directions of lunar crustal strata, determined by Coleman, Russell and Hood from Apollo 15 and 16 sub-satellite data. Because of the dominant role of the Coriolis force in the core dynamo hydromagnetics, the lunar dipole magnetic field would have been ...
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Finding a pendulum’s axis of rotation
2004Abstract To determine a pendulum's axis of rotation, a small piece of paper is temporarily mounted on the front of the pendulum rod at the rod's top end, so that the paper extends up an inch or two past the suspension spring. With the pendulum stopped, two small dots (A and B) are marked on the paper about an inch directly above and ...
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Rotating axis measurement based on rotational Doppler effect of spliced superposed optical vortex
Nanophotonics, 2023Zhengliang Liu +2 more
exaly
A Dual-Axis Rotation Scheme for Redundant Rotational Inertial Navigation System
Micromachines, 2023Lifen Wang, Ting Zhu
exaly
Patellar dislocation with vertical axis rotation
The Journal of Emergency Medicine, 2004Scott C, Sherman, Alfred, Yu
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