High dispersive TIR-GRISMs with flattened angular dispersion profile

2020 ◽  
Author(s):  
M. Heusinger ◽  
T. Flügel-Paul ◽  
K. Grabowski ◽  
D. Michaelis ◽  
U. D. Zeitner
Keyword(s):  
Angular Dispersion ◽  
Dispersion Profile

scholarly journals Quantitative estimates of average geomagnetic axial dipole dominance in deep geological time

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrew J. Biggin ◽  
Richard K. Bono ◽  
Domenico G. Meduri ◽  
Courtney J. Sprain ◽  
Christopher J. Davies ◽  
...  
Keyword(s):  
Power Law ◽  
Geomagnetic Field ◽  
Recent Observation ◽  
Observational Constraint ◽  
Angular Dispersion ◽  
Geological Time ◽  
Future Studies ◽  
Axial Dipole ◽  
Quantitative Estimates

AbstractA defining characteristic of the recent geomagnetic field is its dominant axial dipole which provides its navigational utility and dictates the shape of the magnetosphere. Going back through time, much less is known about the degree of axial dipole dominance. Here we use a substantial and diverse set of 3D numerical dynamo simulations and recent observation-based field models to derive a power law relationship between the angular dispersion of virtual geomagnetic poles at the equator and the median axial dipole dominance measured at Earth’s surface. Applying this relation to published estimates of equatorial angular dispersion implies that geomagnetic axial dipole dominance averaged over 107–109 years has remained moderately high and stable through large parts of geological time. This provides an observational constraint to future studies of the geodynamo and palaeomagnetosphere. It also provides some reassurance as to the reliability of palaeogeographical reconstructions provided by palaeomagnetism.

scholarly journals A Universal Velocity Dispersion Profile for Pressure Supported Systems: Evidence for MONDian Gravity across Seven Orders of Magnitude in Mass

2017 ◽  
Vol 837 (2) ◽  
pp. 179 ◽  
Author(s):  
R. Durazo ◽  
X. Hernandez ◽  
B. Cervantes Sodi ◽  
S. F. Sánchez
Keyword(s):  
Velocity Dispersion ◽  
Dispersion Profile

scholarly journals Angular dispersion compensation for acousto-optic devices used for ultrashort-pulsed laser micromachining

2001 ◽  
Vol 9 (4) ◽  
pp. 200 ◽  
Author(s):  
B.K. Ann Ngoi ◽  
Krishnan Venkatakrishnan ◽  
L.E.N. Lim ◽  
B. Tan
Keyword(s):  
Dispersion Compensation ◽  
Pulsed Laser ◽  
Laser Micromachining ◽  
Angular Dispersion ◽  
Ultrashort Pulsed Laser

scholarly journals Beam tilt and angular dispersion in broad-bandwidth, nanosecond optical parametric oscillators

1999 ◽  
Vol 16 (9) ◽  
pp. 1525 ◽  
Author(s):  
W. J. Alford ◽  
Russell J. Gehr ◽  
R. L. Schmitt ◽  
A. V. Smith ◽  
Gunnar Arisholm
Keyword(s):  
Optical Parametric Oscillators ◽  
Angular Dispersion ◽  
Broad Bandwidth ◽  
Parametric Oscillators ◽  
Optical Parametric

Angular-dispersion-induced spatiotemporal aberrations in noncollinear optical parametric amplifiers

2010 ◽  
Vol 35 (13) ◽  
pp. 2251 ◽  
Author(s):  
Jake Bromage ◽  
Christophe Dorrer ◽  
Jonathan D. Zuegel
Keyword(s):  
Angular Dispersion ◽  
Parametric Amplifiers ◽  
Optical Parametric ◽  
Optical Parametric Amplifiers

Angular dispersion: an enabling tool in nonlinear and quantum optics

2010 ◽  
Vol 2 (3) ◽  
pp. 319 ◽  
Author(s):  
Juan P. Torres ◽  
Martin Hendrych ◽  
Alejandra Valencia
Keyword(s):  
Quantum Optics ◽  
Angular Dispersion

scholarly journals A comparison of the Emlen funnel and Busse's flat cage for orientation studies

Ring ◽  
2004 ◽  
Vol 26 (1) ◽  
pp. 59-69
Author(s):  
Agnieszka Ożarowska ◽  
Reuven Yosef
Keyword(s):  
Angular Dispersion ◽  
Orientation Data ◽  
Normal Feature ◽  
Williams Test

A comparison of the Emlen funnel and Busse's flat cage for orientation studies The Emlen funnel cage was introduced in 1966. Since then it has been used in numerous studies on bird orientation. In 1995, Busse proposed another technique - in the form of flat, round cylindrical cage. Busse also tested nocturnal migrants in the daytime. He, and Nowakowski and Malecka (1999), proved that birds tested in daylight and at night displayed similar distributions of their preferred directions. This study also supports their findings. Zehtindijev et al. (2003) found that results in the Emlen funnel and Busse's flat cage were coherent, despite the tests were performed in different conditions (night-day) and in different years. This study is the first one that compares results of the same individuals tested in the two types of orientation cages during the day (N = 75) and night (N = 17). Results of both methods did not differ (Watson-Williams test of mean angles, Mann-Whitney U-test of angular dispersion) both during the day and at night. Multiheading bird behaviour is common in both types of cages and seems to be a normal feature of orientation data. The only difference was found in bird activity (i.e. number of scratches during 10 minutes of testing) that was higher for Busse's flat cage in daytime tests.

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