Two bright spots on Saturn's globe as observed by Voyager 2

1983 ◽  
Vol 29 (3) ◽  
pp. 225-228
Author(s):  
H. Jantunen
Keyword(s):  
Bright Spots ◽  
Voyager 2

Analysis of Dark-Field Images of Disordered Materials

1972 ◽  
Vol 30 ◽  
pp. 560-561
Author(s):  
J. M. Cowley
Keyword(s):  
Amorphous Materials ◽  
Careful Analysis ◽  
Dark Field ◽  
Minimum Diameter ◽  
Statistical Fluctuations ◽  
Bright Spots ◽  
Sufficient Detail ◽  
Random Arrangement ◽  
Diffraction Patterns ◽  
Imaging Conditions

Recently a number of authors have reported detail in dark-field images obtained from diffuse-scattering regions of electron diffraction patterns. Bright spots in images from short-range order diffuse peaks of disordered binary alloys have been interpreted as evidence for the existence of microdomains of ordered lattice or of segragated clusters of one component. Spotty contrast in dark field images of near-amorphous materials has been interpreted as evidence for the existense of microcrystals. Without a careful analysis of the imaging conditions such conclusions may be invalid. Usually the conditions of the experiment have not been specified in sufficient detail to allow evaluation of the conclusions.Elementary considerations show that even for a completely random arrangement of atoms the statistical fluctuations of density will give a spotty contrast with spots of minimum diameter determined by the dark field aperture size and other factors influencing the minimum resolvable distance under darkfield imaging conditions, including fluctuations and drift over long exposure times (resolution usually 10Å or more).

Voyager 2 probe leaves the neighbourhood

Nature ◽  
2007 ◽  
Author(s):  
Alexandra Witze
Keyword(s):  
Voyager 2

C-smithing of Voyager 2 non-imaging instrument pointing information at Uranus

1988 ◽  
Author(s):  
TSENG-CHAN WANG ◽  
CHARLES ACTON ◽  
IAN UNDERWOOD ◽  
STEPHEN SYNNOTT
Keyword(s):  
Voyager 2 ◽  
Imaging Instrument

THE GEOLOGIC AND STRATIGRAPHIC CONTEXT OF THE BRIGHT SPOTS IN OCCATOR CRATER ON CERES

2016 ◽  
Author(s):  
Jennifer E.C. Scully ◽  
◽  
Debra L. Buczkowski ◽  
Paul M. Schenk ◽  
Adrian Neesemann ◽  
...  
Keyword(s):  
Bright Spots

scholarly journals Heliosheath Properties Measured from a Voyager 2 to Voyager 1 Transient

2019 ◽  
Vol 883 (1) ◽  
pp. 101 ◽  
Author(s):  
J. S. Rankin ◽  
D. J. McComas ◽  
J. D. Richardson ◽  
N. A. Schwadron
Keyword(s):  
Voyager 2

scholarly journals Optical Spin Hall Effect in Closed Elliptical Plasmonic Nanoslit with Noncircular Symmetry

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 851
Author(s):  
Xiaorong Ren ◽  
Xiangyu Zeng ◽  
Chunxiang Liu ◽  
Chuanfu Cheng ◽  
Ruirui Zhang ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Hall Effect ◽  
Light Field ◽  
Analytical Calculation ◽  
Spin Hall Effect ◽  
Spin Component ◽  
Phase Gradient ◽  
Bright Spots ◽  
Principal Axes ◽  
Output Field

We investigated the optical spin Hall effect (OSHE) of the light field from a closed elliptical metallic curvilinear nanoslit instead of the usual truncated curvilinear nanoslit. By making use of the characteristic bright spots in the light field formed by the noncircular symmetry of the elliptical slit and by introducing a method to separate the incident spin component (ISC) and converted spin component (CSC) of the output field, the OSHE manifested in the spot shifts in the CSC was more clearly observable and easily measurable. The slope of the elliptical slit, which was inverse along the principal axes, provided a geometric phase gradient to yield the opposite shifts of the characteristic spots in centrosymmetry, with a double shift achieved between the spots. Regarding the mechanism of this phenomenon, the flip of the spin angular momentum (SAM) of CSC gave rise to an extrinsic orbital angular momentum corresponding to the shifts of the wavelet profiles of slit elements in the same rotational direction to satisfy the conservation law. The analytical calculation and simulation of finite-difference time domain were performed for both the slit element and the whole slit ellipse, and the evolutions of the spot shifts as well as the underlying OSHE with the parameters of the ellipse were achieved. Experimental demonstrations were conducted and had consistent results. This study could be of great significance for subjects related to the applications of the OSHE.

GEOPHYSICS BRIGHT SPOTS

2012 ◽  
Vol 31 (4) ◽  
pp. 383-384
Author(s):  
Yonghe Sun
Keyword(s):  
Bright Spots

scholarly journals The formation and evolution of bright spots on Ceres

Icarus ◽  
2019 ◽  
Vol 320 ◽  
pp. 188-201 ◽  
Author(s):  
N.T. Stein ◽  
B.L. Ehlmann ◽  
E. Palomba ◽  
M.C. De Sanctis ◽  
A. Nathues ◽  
...  
Keyword(s):  
Bright Spots ◽  
Formation And Evolution

scholarly journals Magnetic Field Studies at Jupiter by Voyager 2: Preliminary Results

Science ◽  
1979 ◽  
Vol 206 (4421) ◽  
pp. 966-972 ◽  
Author(s):  
N. F. NESS ◽  
M. H. ACUNA ◽  
R. P. LEPPING ◽  
L. F. BURLAGA ◽  
K. W. BEHANNON ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Studies ◽  
Preliminary Results ◽  
Voyager 2
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