Results 211 to 220 of about 213,899 (261)
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Optical measurements of angle and axis of rotation
Optics Letters, 2008A carousel interferometer is designed to find the unknown angle and axis of rotation simultaneously. A set consisting of a compensator glass plate and a right-angle prism is placed in each of the two arms of the interferometer while located at the same rotational stage.
Ghazanfar, Hussain, Masroor, Ikram
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Measurement of the rotational transform at the axis of a tokamak
Physical Review Letters, 1987Measurements of the internal magnetic field structure of Texas Experimental Tokamak discharges are made by use of laser-induced fluorescence of an injected ${\mathrm{Li}}^{0}$ beam. From measurements near the magnetic axis, we obtain the axial safety factor, ${q}_{0}$ (or equivalently the rotational transform, \ensuremath{\iota}=2\ensuremath{\pi}/q ...
, West, , Thomas, , deGrassie, , Zheng
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Ultrasonic two-axis rotation detector
IEEE Transactions on Biomedical Engineering, 1990A two-axis rotation monitor is described which determines the relative displacement between a pair of ultrasonic detectors using the phase difference of a continuous ultrasound wave generated by a single, distant source. The monitor has been used to measure head rotations around the vertical and horizontal axes, but can easily be adopted to other body ...
Remy Rollero +4 more
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The explicit representation to the principal rotation angle and the principal rotation axis
Applied Mathematics and Mechanics, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dui, Guansuo, Zhuo, Xiaobao
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2016
In this paper, authors discuss OC 152 as an example of the idea of modeling as it is used in the contemporary philosophy of science. In the first part, an analysis of OC 152 is supplied and three possible interpretations of the section. In the second part, Schulte’s analysis of OC 152 is presented.
Điri, Josipa +2 more
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In this paper, authors discuss OC 152 as an example of the idea of modeling as it is used in the contemporary philosophy of science. In the first part, an analysis of OC 152 is supplied and three possible interpretations of the section. In the second part, Schulte’s analysis of OC 152 is presented.
Điri, Josipa +2 more
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Two-axis euler rotation determination
Applied Mathematics and Computation, 2006Satellite orientation is usually expressed in terms of euler rotations about the three principal axes. Usually, the orientation is determined using the measurements of at least two known vectors. A variant to this problem is considered in this note.
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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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