Results 161 to 170 of about 64,072 (295)

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Photon-Sphere Modes in Curved Optical Microcavities: A Black-Hole Analogue Laser. [PDF]

Adv Sci (Weinh)
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Xu C, Sundaresan A, Kazkal NB, Lafargue C, Zarfaty L, Wang LG, Birnholtz O, Decanini D, Lebental M, Sebbah P.   +9 more
europepmc   +2 more sources

Gravitational lens effect

Gravitational lens effect
1990
openaire  

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Orbiting, colliding, and merging liquid lenses on a soap film: Toward gravitational analogs. [PDF]

PNAS Nexus
Martischang JP, Reichert B, Haouche I, Rousseaux G, Duchesne A, Baudoin M.   +5 more
europepmc   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, EarlyView.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source

Tolerance Analysis of Test Mass Alignment Errors for Space-Based Gravitational Wave Detection. [PDF]

Sensors (Basel)
Ke J, Gao R, Liu J, Zhao M, Luo Z, Shen J, Dong P.   +6 more
europepmc   +1 more source

Civilizing the Nation: Travel, Civility and Bourgeois Nationalism in Israel

Nations and Nationalism, EarlyView.
ABSTRACT This article reads The Lapid Guide to Europe, a bestselling Hebrew‐language travel guide published from the 1970s to the 1990s, as a form of bourgeois nationalism enacted through everyday practices of behaviour. Written by journalist and Holocaust survivor Tommy Lapid, the guide operated as civic pedagogy, instructing Israeli travellers in ...
Daniel Mahla
wiley   +1 more source

Geometry-Induced Capillary Rise and Directional Flow in Porous Lattice Structures. [PDF]

ACS Appl Mater Interfaces
Choi Y, Son JY, Kim H.
europepmc   +1 more source

Spacetime perspective of gravitational lensing in perturbed cosmologies. [PDF]

Sci Rep
Kling TP, Pooler SM.
europepmc   +1 more source