Results 21 to 30 of about 33,097 (263)

Observation of Refractive Index Line Shape in Ultrafast XUV Transient Absorption Spectroscopy

open access: yesUltrafast Science, 2023
Ultrafast extreme ultraviolet (XUV) transient absorption spectroscopy measures the time- and frequency-dependent light losses after light–matter interactions.
Mingze Sun   +13 more
doaj   +1 more source

On the origin of the deflection of light [PDF]

open access: yesChaos, Solitons & Fractals, 2008
10 pages, 2 ...
openaire   +2 more sources

The Gravitational Deflection of Light in f(R)-Gravity [PDF]

open access: yesInternational Journal of Theoretical Physics, 2014
The fact that the gravitation could deflect the light trajectory has been confirmed by a large number of observation data, that is consistent with the result calculated by Einstein's gravity. F(R)-gravity is the modification of Einstein's gravity. According to the field equations obtained by the action of the f(R) form, we get a similar Schwarzschild ...
Huang, Long   +3 more
openaire   +3 more sources

A Line-Integral Representation of Gravitational Lensing by Black Holes

open access: yesUniverse
We present a path-based curvature representation of the gravitational bending of light in black-hole (BH) spacetimes. The bending angle is written as a one-dimensional line integral of the optical Gaussian curvature Kopt along the photon trajectory ...
İzzet Sakallı
doaj   +1 more source

Deflection of Light during a Solar Eclipse [PDF]

open access: yesNature, 1920
PROF. ANDERSON has suggested in NATURE that the apparent displacement of stars observed during the solar eclmay be ascribed to an unusual form of refraction in the terrestrial atmosphere. The discussion which has followed shows some lack of agreement as to the importance of such a refraction effect. I wish to suggest that it might, perhaps, be possible
openaire   +3 more sources

Spherical Skyrmion black holes as gravitational lenses

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In this article, we extend the strong deflection limit to calculate the deflection angle for a class of geometries which are asymptotically locally flat.
Fabrizio Canfora   +2 more
doaj   +1 more source

Electric Control of the In-Plane Deflection of Laser Beam Pairs within a Photonic Slab Waveguide

open access: yesOptics
A symmetric laser beam pair can provide unique control over light–matter interactions. When propagating within a symmetric slab waveguide, its non-conical diffraction at a specially designed symmetric leaky waveguide grating can be completely suppressed,
Andreas Henkel   +3 more
doaj   +1 more source

Deflection of light by a Coulomb charge in Born–Infeld electrodynamics

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study the propagation of light under a strong electric field in Born–Infeld electrodynamics. The nonlinear effect can be described by the effective indices of refraction.
Jin Young Kim
doaj   +1 more source

Light deflection angle through velocity profile of galaxies in f(R) model

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We explore a new realisation of the galactic scale dynamics via gravitational lensing phenomenon in power-law f(R) gravity theory of the type $$f(R)\propto R^{1+\delta }$$ f ( R ) ∝ R 1 + δ with ...
Vipin Kumar Sharma   +2 more
doaj   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

open access: yesFEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas   +6 more
wiley   +1 more source

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