Results 31 to 40 of about 753,519 (186)

To the Question of the So Called Sauromatic Mirror from the Oguz Kurgan

open access: yesНижневолжский археологический вестник, 2020
The article continues the discussion about the object, which was discovered in the Oguz kurgan and is referred to as the sauromatian “mirror” in the literature. A round disk (with a flat side handle) shows a corrugation on its two sides.
Tatiana M. Kuznetsova
doaj   +1 more source

Controlling cantilevered adaptive X-ray mirrors

open access: yesJournal of Synchrotron Radiation
Modeling the behavior of a prototype cantilevered X-ray adaptive mirror (held from one end) demonstrates its potential for use on high-performance X-ray beamlines.
Kenneth A. Goldberg, Kyle T. La Fleche
doaj   +1 more source

Stationary entanglement between two movable mirrors in a classically driven Fabry-Perot cavity [PDF]

open access: yes, 2006
We consider a Fabry-Perot cavity made by two moving mirrors and driven by an intense classical laser field. We show that stationary entanglement between two vibrational modes of the mirrors, with effective mass of the order of micrograms, can be ...
David Vitali   +11 more
core   +2 more sources

Generation of high-order optical vortices using directly machined spiral phase mirrors

open access: yes, 2011
We report on the generation of high-order optical vortices by spiral phase mirrors. The phase mirrors are produced by direct machining with a diamond tool and are shown to produce high-quality optical vortices with topological charges ranging from 1 to ...
Andersen   +16 more
core   +1 more source

Analytical expressions for optimum alignment modes of highly segmented mirrors

open access: yes, 2004
The major sources causing deterioration of optical quality in extremely large optical telescopes are misadjustments of the mirrors, deformations of monolithic mirrors, and misalignments of segments in segmented mirrors. For active optics corrections, all
Cantrill CD, L. Noethe, Troy M
core   +1 more source

Very wide range tunable CMOS/bipolar current mirrors with voltage clamped input [PDF]

open access: yes, 1999
In low power current mode signal processing circuits it is often necessary to use current mirrors to replicate and amplify/attenuate current signals and clamp the voltage of nodes with high parasitic capacitances so that the smallest currents do not ...
Andreou, Andreas G.   +2 more
core   +1 more source

Bringing Pilgrimage Home: The Production, Iconography, and Domestic Use of Late-Medieval Devotional Objects by Ordinary People

open access: yesReligions, 2019
Tracing the devotional beliefs and practices of everyday people during the late Middle Ages through documents is tricky, as most were written with other purposes in mind.
Sarah Blick
doaj   +1 more source

Barrow 11 of the “Garden” Group in the Lower Dniester Region and Contemporary “Mythmaking” About Scythian “Amazons”

open access: yesНижневолжский археологический вестник, 2020
The article publishes and analyzes materials obtained during the study of the Scythian barrow 11 of the “Garden” group excavated in 2018 near village Glinoe, Slobodzeya district, on the left bank of the Lower Dniester, for the first time.The barrow was ...
Vitalij S. Sinika   +4 more
doaj   +1 more source

Light-to-matter entanglement transfer in optomechanics

open access: yes, 2014
We analyze a scheme to entangle the movable mirrors of two spatially separated nanoresonators via a broadband squeezed light. We show that it is possible to transfer the EPR-type continuous-variable entanglement from the squeezed light to the mechanical ...
Eleuch, Hichem   +2 more
core   +1 more source

A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations [PDF]

open access: yes, 2006
We present a new class of magnetically shaped deformable liquid mirrors made of a magnetic liquid (ferrofluid). Deformable liquid mirrors offer advantages with respect to deformable solid mirrors: large deformations, low costs and the possibility of very
Anna Ritcey   +4 more
core   +2 more sources

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