Results 11 to 20 of about 762,865 (262)

Phase Shifts in Stochastic Resonance [PDF]

open access: yesPhysical Review Letters, 1992
The response of an overdamped bistable system to a periodic force is investigated using linear-response theory and by analog electronic experiment. It is shown, both theoretically and experimentally that a phase lag phi exists between the force and the response, and that |phi| passes through a maximum when the noise intensity is tuned through the range
DYKMAN MI   +3 more
openaire   +2 more sources

The phase shift induced by a single atom in free space [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
In this article we theoretically study the phase shift a single atom imprints onto a coherent state light beam in free space. The calculations are performed in a semiclassical framework.
Sondermann M., Leuchs G.
doaj   +1 more source

Celestial Spectrum Velocimetry With Non-Linear Fourier Phase Shift and Its CRLB

open access: yesIEEE Access, 2022
To solve the problem of the non-linear Fourier phase shift caused by the wavelength shift in the celestial spectrum velocimetry, a celestial spectrum velocimetry method based on non-uniform discrete Fourier transform and compressed sensing is proposed ...
Zijun Zhang, Jin Liu, Xiaolin Ning
doaj   +1 more source

Design and Application of Bidirectional Converter Based on DAB for Hydrogen Energy Dual-source Locomotive

open access: yesKongzhi Yu Xinxi Jishu, 2022
Compared with traditional diesel locomotive and electric locomotive, hydrogen energy dual source locomotive uses hydrogen fuel cell for power supply, which is not only safer and more environmentally friendly, but also has low operating noise, low cost ...
LUO Pan   +5 more
doaj   +1 more source

Sleep Deprivation Does Not Influence Photic Resetting of Circadian Activity Rhythms in Drosophila

open access: yesClocks & Sleep, 2022
Previous investigations in humans and rodent animal models have assessed the interplay of sleep in the circadian system’s phase responses to nighttime light exposure.
David C. Negelspach   +3 more
doaj   +1 more source

Zebrafish Circadian Clock Entrainment and the Importance of Broad Spectral Light Sensitivity

open access: yesFrontiers in Physiology, 2020
One of the key defining features of an endogenous circadian clock is that it can be entrained or set to local time. Though a number of cues can perform this role, light is the predominant environmental signal that acts to entrain circadian pacemakers in ...
Inga A. Frøland Steindal   +2 more
doaj   +1 more source

A Straightness Error Compensation System for Topography Measurement Based on Thin Film Interferometry

open access: yesPhotonics, 2021
Straightness error compensation is a critical process for high-accuracy topography measurement. In this paper, a straightness measurement system was presented based on the principle of fringe interferometry. This system consisted of a moving optical flat
Hang Su   +4 more
doaj   +1 more source

Momentum Dependence of Phase Shifts [PDF]

open access: yesPhysical Review, 1955
A lower limit is found for the momentum derivative of the scattering phase shifts of a relativistic neutral two-particle system when the interaction is of finite range.
Goebel, Charles J.   +2 more
openaire   +2 more sources

One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications

open access: yesPhotonics, 2022
We demonstrate an efficient sensing of both gaseous and aqueous analytes utilizing Bloch surface waves (BSWs) and guided waves (GWs) excited on a truncated one-dimensional photonic crystal (1DPhC) composed of six TiO2/SiO2 bilayers with a termination ...
Tomas Fort   +4 more
doaj   +1 more source

Phase-shift extraction for phase-shifting interferometry by histogram of phase difference

open access: yesOptics Express, 2010
We propose a non-iterative approach to extract the unknown phase shift in phase shifting interferometry without the assumption of equal distribution of measured phase in [0,2π]. According to the histogram of the phase difference between two adjacent frames, the phase shift can be accurately extracted by finding the bin of histogram with the highest ...
Jiancheng, Xu   +4 more
openaire   +2 more sources

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