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Monday, August 10, 2020 | History

2 edition of Intercomparison of determinations of refractive index of air found in the catalog.

Intercomparison of determinations of refractive index of air

Intercomparison of determinations of refractive index of air

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Published by Commission of the European Communities in Luxembourg .
Written in English


Edition Notes

Statementedited by: P. Schellekens.
SeriesBCR information
ContributionsSchellekens, P.
ID Numbers
Open LibraryOL14936819M
ISBN 100119713063

  This might, of course, be transparent in which case determinations of relative reflectivity coefficients could be made for both interfaces and used for the computation of the refractive index of the metal deposit. Disagreement between the determinations by these alternative methods might be attributed to stresses if films could be ruled ://   It is mm and occurs in a uniform index of refraction of the media of The first focal length FP is equal to + = mm. The refractive power of the reduced eye is equal to the index divided by focal length. Using the first focal length, the power of the eye is found by dividing it into the first index, which is air:

@article{osti_, title = {Case study of modeled aerosol optical properties during the SAFARI campaign}, author = {Kuzmanoski, Maja and Box, Michael A. and Schmid, Beat and Russell, Philip B. and Redemann, Jens}, abstractNote = {We present modeled aerosol optical properties (single scattering albedo, asymmetry parameter, and lidar ratio) in two layers with different aerosol loadings New look at bump spectra models for temperature and refractive-index fluctuations. Elizabeth A. Sisterman, Larry C. Andrews. Proc. SPIE , Propagation Engineering: Fourth in a Series, pg (1 July ); doi: / Read Abstract +

In distance measurement, the mean velocity of the electromagnetic wave depends on the mean value of the refractive index along the path. In triangulation, and in trigonometric heighting and levelling, the ideally straight line of sight to the target is bent by the changes in refractive index across the :// The present invention is an apparatus and method for measuring the content of water in unrefined hydrocarbons through the application of a refractive index comprising a capacitance measuring device and a density measuring device. The capacitance measuring device may be calibrated according to linear data regarding the refractive index of an emulsion of oil and water to provide ://


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Intercomparison of determinations of refractive index of air Download PDF EPUB FB2

The Refractive Index of Air BENGT EDL~ University of Lund, Lund, Sweden Received Novem Abstract Several recent investigations have contributed important Present knowledge of the refractive index of air is reviewed.

cations that the standard adopted in on the basis of Barrel1 and Sears' measurements should be changed, but new Air refractive index compensation is a major challenge and limitation in applied distance measuring interferometry. The physical model for the phase and group index of refraction is reviewed as basis for all compensation :// Polymer gel dosimeters with high dose regions have higher refractive index and optical density compared to the background medium, these changes in refractive index at high dose results in interior ray bending.

Methods: The inclusion of the effects of refraction is an important step in reconstruction of optical density in gel ://   dry refractive index for a variety of air mass types encoun-tered during the NASA SEAC4RS (Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys) field campaign.

They observed that the real part of the refractive index for dry particles was fairly constant at between and for all air mass The refractive index (RI) of the particles was computed based on volume mixing of the constituents. The RI of the H 2 SO 4 /H 2 O component was based on data and methodology of Steele and Hamill The results have been formulated to permit computation of the refractive index of air containing these substances.

Book. Jan ; H G Tompkins in view of determinations of specific Refractive index determination for anisotropic crystals C W Bunn-Reply to the refractive index determination for anisotropic crystals A L Mackay-Recent citations Chemical Microscopy Charles.

Maresh et al-Refractive index determination for anisotropic crystals C W Bunn-This content was downloaded from IP address on 29/05/ at Fit of Edlen formulae to measure values of the refractive index of air Gerhard Boensch, Eckhard Potulski Proc.

SPIERecent Developments in Optical Gauge Block Metrology, pg 62 (30 September ); doi: / Finally, new refractive-index data at nm are given for methanol, water, acetone, ethanol, cyclohexane, glycol, diethyl hexyl-sabacate (DEHS), carbon tetrachloride, glycerol, toluene, ethyl   nm, the mean of D lines of Sodium) passes from air into the oil or fat.

Refractive index varies with temperature and wavelength. Principle: Measurement of the refractive index of the sample is done by means of a suitable refractometer. Apparatus: Refractometer - Abbe or Butyro Refractometer(1).pdf. Refractive index, isotropy, shape + orientation, and surface detail of particle.

Refractive index of medium. Wavelength and polarity of incident light. Static light scattering (Mie and Fraunhofer diffraction) A comprehensive list of particle sizing techniques is found at of particle size by different.

10 Feb 10 Feb Characterization and intercomparison of aerosol absorption photometers: result of two intercomparison workshops   The instrument is calibrated with a glass prism of known refractive index (an optical contact with the prism being made by a drop of a bromonapthalene) or by using distilled water which has refractive index of at ºC and at °C, @article{osti_, title = {Simultaneous Retrieval of Effective Refractive Index and Density from Size Distribution and Light Scattering Data: Weakly-Absorbing Aerosol}, author = {Kassianov, Evgueni I.

and Barnard, James C. and Pekour, Mikhail S. and Berg, Larry K. and Shilling, John E. and Flynn, Connor J. and Mei, Fan and Jefferson, Anne   In an international intercomparison of photomet- ric base units, conducted by the Comite Consultatif de Photometrie et Radiometric (CCPR) in [9,10], the NIST luminous intensity data were the only ones derived from a gold-point based mea- surement chain.

They fell within the spread of the intercomparison, but were % higher than the Highly accurate and precise meaurements of the refractive index function F and refractive index measurements n(P,T) up to pressures of 35 MPa have been measured for a Full text of "Accuracy of microscopical methods for determining refractive index by immersion" See other formats U.

Department of Commerce National Bureau of Standards RESEARCH PAPER RP Part of Journal of Research of the Rational Bureau of Standards, Vol September ACCURACY OF MICROSCOPICAL METHODS FOR DETER- MINING REFRACTIVE INDEX BY IMMERSION By   Mass determinations of a 1 kg silicon sphere for the Avogadro project A Picard Metrologia 43 IOPscience.

Effect of Dissolved Air on the Density and Refractive Index of Water A. Harvey et al International Journal of Thermophysics 26 Crossref Zaneveld and Pak () determined an average real refractive index of naturally occurring marine particles (see Table A.6) also by using the anomalous diffraction theory (van de Hulst ) to express a ratio of the scattering coefficients at two different wavelengths, b (nm)/b (nm), as a function of the slope of the power-law size The effective refractive index of the guided mode simulated by BPM showed good agreement with the experiment ghts We obtained the complete damage profile of the 3MeV O-implanted.

This produces an increase of refractive power, and the angle of incidence has to be decreased to reach the critical angle. The difference of the two readings subtracted from the critical angle for distilled water (obtained from a previous accurate determination) gives the critical angle for five per cent.

solution, and hence the absolute ://  To check for surface vs bulk defects, a drop of silicone oil was placed on the surface of both the clear and cloudy films.

Silicone oil has a refractive index near that of HPMC film (n ~ ). Microscopy was used to collect images of each film type (clear For example, the refractive index is a needed input parameter in radiative transfer models that are employed to simulate the backscattered top-of-the-atmosphere radiance to derive the aerosol