Results 141 to 150 of about 6,341 (202)
Critical Angle Refractometry for Lossy Media with a Priori Known Extinction Coefficient
Physics, 2021 Critical angle refractometry is an established technique for determining the refractive index of liquids and solids. For transparent samples, the critical angle refractometry precision is limited by incidence angle resolution.
Panagiotis Giannios +2 more
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Prediction of Ethanol Content and Total Extract Using Densimetry and Refractometry
Beverages, 2023 This study investigated the interrelationships between the parameters of density, optical refraction, the volume fraction of ethanol and the total extract, using model solutions and samples of wine materials.
Anatoliy Kazak +2 more
exaly +3 more sources
Use of refractometry for determination of psittacine plasma protein concentration
Veterinary Clinical Pathology, 2008 Previous studies have demonstrated both poor and good correlation of total protein concentrations in various avian species using refractometry and biuret methodologies.The purpose of the current study was to compare these 2 techniques of total protein ...
Kristopher L. Arheart, Carolyn Cray
exaly +2 more sources
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Optics Letters, 2021
Rainbow refractometry has been used in the past to measure size and refractive index of spherical particles, typically droplets in a spray. In the present study, conventional optical configurations for point measurements or line measurements have been extended to allow also the particle position in a plane to be determined, and hence, the designation ...
Can Li +6 more
openaire +2 more sources
Rainbow refractometry has been used in the past to measure size and refractive index of spherical particles, typically droplets in a spray. In the present study, conventional optical configurations for point measurements or line measurements have been extended to allow also the particle position in a plane to be determined, and hence, the designation ...
Can Li +6 more
openaire +2 more sources
Optical coherence refractometry
Optics Letters, 2008We introduce a novel approach to refractometry using a low coherence interferometer at multiple angles of incidence. We show that for plane parallel samples it is possible to measure their phase refractive index rather than the group index that is usually measured by interferometric methods.
Peter H, Tomlins +4 more
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Laser Meridional Refractometry
American journal of optometry and physiological optic, 1976ABSTRACT Laser meridional refractions were undertaken on 30 subjects. The results were compared to classical subjective techniques utilizing both correlative statistics and clinical criteria. The laser meridional techniques were highly correlated with the subjective procedures and were accurate when judged by clinical criteria.
C, Haine, W, Long, R, Reading
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Journal of Microscopy, 1983
SUMMARYImmersion refractometry is based on matching the refractive index of the medium to that of the cytoplasm of the cell, in which case the latter will have minimum contrast in the phase contrast microscope and will practically disappear. The cytoplasm is then said to be at the match point with the medium. Since the refractive index of a solution is
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SUMMARYImmersion refractometry is based on matching the refractive index of the medium to that of the cytoplasm of the cell, in which case the latter will have minimum contrast in the phase contrast microscope and will practically disappear. The cytoplasm is then said to be at the match point with the medium. Since the refractive index of a solution is
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Archives of Ophthalmology, 1970
Three methods for simplifying the solution of the equations used in meridional refractometry are outlined: solution by time-sharing, multiple-access digital computers; solution by special-purpose analogue computer; and solution by nomogram. The advantages and the disadvantages of each method are discussed.
R F, Brubaker +2 more
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Three methods for simplifying the solution of the equations used in meridional refractometry are outlined: solution by time-sharing, multiple-access digital computers; solution by special-purpose analogue computer; and solution by nomogram. The advantages and the disadvantages of each method are discussed.
R F, Brubaker +2 more
openaire +2 more sources