Results 151 to 160 of about 6,341 (202)
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Refractometry by reflectometry
SPIE Proceedings, 1995Complex refractive index determination (refractometry) of metals can be made successfully with methods using reflectivity measurements. In this paper a brief classification of reflectivity methods with subsequent comments about their sensitivity is made. Experimental results obtained using the most suitable methods are presented.
Dan Apostol +5 more
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Synthetic aperture rainbow refractometry
Optics Letters, 2022This work proposed a synthetic aperture rainbow refractometry (SARR) by synthesizing rainbow signals of the same droplet with dual-wavelength laser beams, in order to increase the aperture of rainbow refractometry. In this way, the SARR can apply to long distance and small droplets measurement.
Xinhao, Wang +5 more
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Proceedings. Annual meeting - American Society of Brewing Chemists, 1965
(1965). Principles of Refractometry. Proceedings. Annual meeting - American Society of Brewing Chemists: Vol. 23, Proceedings of the Annual Meeting 1965, pp. 176-186.
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(1965). Principles of Refractometry. Proceedings. Annual meeting - American Society of Brewing Chemists: Vol. 23, Proceedings of the Annual Meeting 1965, pp. 176-186.
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1994
When a ray of electromagnetic radiation strikes a flat surface at an angle, the ray may be bent upward (reflected) or bend downward (refracted) as illustrated in Fig. 27.1. Notice that the ray does not go straight through the material.
Yeshajahu Pomeranz, Clifton E. Meloan
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When a ray of electromagnetic radiation strikes a flat surface at an angle, the ray may be bent upward (reflected) or bend downward (refracted) as illustrated in Fig. 27.1. Notice that the ray does not go straight through the material.
Yeshajahu Pomeranz, Clifton E. Meloan
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Archives of Ophthalmology, 1969
Meridional refractometry is a process whereby the meridional power of the corrective lens is measured in three predetermined meridians of the eye and the final prescription calculated from these data. The calculation is based on equations derived from Laurance's approximation of the meridional power of a cylindrical lens.
R F, Brubaker +2 more
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Meridional refractometry is a process whereby the meridional power of the corrective lens is measured in three predetermined meridians of the eye and the final prescription calculated from these data. The calculation is based on equations derived from Laurance's approximation of the meridional power of a cylindrical lens.
R F, Brubaker +2 more
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Instant photographic refractometry in children
Acta Ophthalmologica, 1988Abstract. A simple photographic method for detection and measurement of refractive errors in children, using a specially designed camera and electronic flash unit and ‘instant’ (Polaroid) film, was tested on 64 children, aged 3 to 8 years, and compared with the results from retinoscopy. The refractive errors ranged from ‐6.5 to +6.5 D.
P, Wanger, G, Waern
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Interferometry and refractometry of snail amoebocytes
Experimental Cell Research, 1959Abstract Quantitative cytological data have been obtained for different regions of living snail amoebocytes in tissue culture using cell refractometry and interferometry. The modal solid concentration in the cytoplasm was found to be 13.5 ± 0.5 g per 100 ml as measured by immersion refractometry.
R, BARER, D A, DICK
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Liquid refractometry by the rainbow method
Applied Optics, 1998A new method for measuring the refractive index of liquid, proposed in a previous paper [Appl. Opt. 36, 5552-5556 (1997)], has been developed. The minimum deviation of a laser beam deflected by a liquid-filled cylindrical cell was calculated by use of geometric optics.
H, Hattori +3 more
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2015
Abstract The refractive index of materials is one of their most basic optical properties. In the case of liquids, the refractive index has been employed by chemists for many years to document sample purity. The simplest way to determine the refractive index is by measuring the angle at which light bends at an interface between two ...
Robert N. Compton, Michael A. Duncan
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Abstract The refractive index of materials is one of their most basic optical properties. In the case of liquids, the refractive index has been employed by chemists for many years to document sample purity. The simplest way to determine the refractive index is by measuring the angle at which light bends at an interface between two ...
Robert N. Compton, Michael A. Duncan
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