Results 21 to 30 of about 66,598 (211)
Review of acoustical and optical techniques to measure absolute salinity of seawater
Frontiers in Marine Science, 2022 The salinity of seawater is of fundamental importance in climate studies, and the measurement of the variable requires high accuracy and precision in order to be able to resolve its typically small variations in the oceans with depth and over long-time ...
Marc Le Menn, Rajesh Nair
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The Hunt for Environmental Noise in Virgo during the Third Observing Run
Galaxies, 2020 The first twenty years of operation of gravitational-wave interferometers have shown that these detectors are affected by physical disturbances from the surrounding environment. These are seismic, acoustic, or electromagnetic disturbances that are mainly
Irene Fiori +19 more
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A membrane interferometer [PDF]
Proceedings of the National Academy of Sciences, 2009 Freestanding phospholipid bilayers have been assembled spanning shallow, micrometer-sized wells etched into a Si wafer substrate so that the bilayers are near (within hundreds of nanometers) but not in contact with the wafer surface. The proximity of the bilayers to the highly reflective Si/SiO 2 interface allows ...
Prasad V, Ganesan, Steven G, Boxer
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Steel Beam Compressive Strain Sensor Using Single-Mode-Multimode-Single-Mode Fiber Structure
IEEE Photonics Journal, 2016 A steel beam compressive strain sensor using single-mode-multimode-single-mode (SMS) fiber structure is demonstrated. Parallel measurements are made using an electrical resistance (ER) strain gauge along with the SMS to sense the compressive strain on ...
S. E. F. Masnan +6 more
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An accurate and robust metrological network for coherent optical frequency dissemination
New Journal of Physics, 2021 We introduce multi-branch repeater laser stations (MLSs) for the dissemination of an ultra-stable signal from one point to multiple users and the simultaneous evaluation of the stability and accuracy of multiple links.
Etienne Cantin +5 more
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Stabilized fiber-optic Mach–Zehnder interferometer for carrier-frequency rejection [PDF]
, 2013 We have demonstrated stabilization of a fiber-optic Mach–Zehnder interferometer, with a centimeter-scale path difference, to the transmission minimum for the carrier wave of a frequency-modulated laser beam.
Freegarde, Tim +4 more
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Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022 The paper describes the principle of measuring linear dimensions using a nano-measuring machine (NMM), which implements the method of measuring three coordinate axes in the range of 25X25X5 mm3.
A. A. Bagdun, V. L. Solomakho
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Optical Inclinometer Based on a LPG-Taper Series Configuration
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021 This article presents the development of an inclinometer device based on a Mach-Zehnder interferometer considering the effects caused by temperature variations. It was demonstrated the operation of a LPG-taper system for angle measurements. The practical
Renato Luiz Faraco Filho +3 more
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Physical Review Letters, 1991 We have demonstrated an interferometer for atoms. A three-grating geometry is used, in which the interfering beams are distinctly separated in both position and momentum. We used a highly collimated beam of sodium atoms with a de Broglie wavelength of 16 pm and high-quality 0.4-\ensuremath{\mu}m-period free-standing gratings which we fabricated using a
Keith, David W. +3 more
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The Parkes-Tidbinbilla Interferometer [PDF]
Publications of the Astronomical Society of Australia, 1985 AbstractWe report the development of a radio-linked interferometer which uses the 64-m telescope at Parkes, NSW, and one of the NASA antennas (64-m or 34-m) at Tidbinbilla, ACT. With a baseline of approximately 275 km, this is the world’s longest real-time interferometer; it will be usable at frequencies of 1.6, 2.3, 8.4, and 22 GHz to give angular ...
R. P. Norris +3 more
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