THE REFRACTIVE INDICES OF HYDROGEN PEROXIDE AND ITS AQUEOUS SOLUTIONS

1943 ◽  
Vol 21b (8) ◽  
pp. 156-162 ◽  
Author(s):  
Paul A. Giguère
Keyword(s):  
Hydrogen Peroxide ◽  
Refractive Index ◽  
Aqueous Solutions ◽  
Accurate Method ◽  
Refractive Indices ◽  
Pure Hydrogen ◽  
A Value ◽  
Concentration Of Solutions ◽  
Hydrogen Lines ◽  
Good Agreement

The refractive indices of aqueous solutions of hydrogen peroxide for the C-, F-, and G-lines of hydrogen and the sodium D-line have been measured over the whole range of concentration at four temperatures: 16°, 20°, 24°, and 28 °C. The results obtained with the hydrogen lines are somewhat different from those of Cuthbertson and Maass. A possible explanation of this discrepancy is given. By extrapolation it was found that for pure hydrogen peroxide nD = 1.4087 at 20°, a value in good agreement with previous determinations. The refractive index affords a rapid and fairly accurate method for determining the concentration of solutions of hydrogen peroxide.

REFRACTIVE INDEX OF HYDROGEN PEROXIDE SOLUTIONS. A REVISION

1949 ◽  
Vol 27b (3) ◽  
pp. 168-173 ◽  
Author(s):  
Paul A. Giguère ◽  
Pierre Geoffrion
Keyword(s):  
Hydrogen Peroxide ◽  
Refractive Index ◽  
Aqueous Solutions ◽  
Temperature Coefficient ◽  
Analytical Method ◽  
Senior Author ◽  
Accurate Data ◽  
Average Temperature ◽  
Accuracy Of Measurements

Values for the refractive index of aqueous solutions of hydrogen peroxide reported some years ago by the senior author have been found in error by more than the estimated accuracy of measurements. The error is proportional to the concentration of the solutions and amounts to about 5 × 10−4 for the pure peroxide. More accurate data have now been obtained by using an instrument of higher precision and by refining the analytical method. In addition, some anhydrous hydrogen peroxide has been prepared; its refractive index at 25 °C. was 1.40672 ± 0.0001 with an average temperature coefficient of 3.4 × 10−5 per degree.

HYDROGEN PEROXIDE AND ITS ANALOGUES: IV. SOME THERMAL PROPERTIES OF HYDROGEN PEROXIDE

1951 ◽  
Vol 29 (10) ◽  
pp. 895-903 ◽  
Author(s):  
William T. Foley ◽  
Paul A. Giguère
Keyword(s):  
Hydrogen Peroxide ◽  
Thermal Properties ◽  
Heat Of Fusion ◽  
Pure Hydrogen ◽  
Platinum Black ◽  
Concentrated Solutions ◽  
Heat Of Vaporization ◽  
Freezing Points ◽  
A Value ◽  
Thermal Data

Using a Bunsen ice calorimeter the following thermal data were obtained for pure hydrogen peroxide:Specific heat of liquid between0°and25°C …................... 0.632 ± 0. 003 cal. per.gm. per degreeSpecific heat of solid between−20°and −10°C.................. 0.41 ± 0.02 cal. per gm. per degreeLatent heat of fusion at meltingpoint, −0.46°C................... 85.83 ± 0.18 cal. per gm.Latent heat of vaporization at 0°C...... 370.17 ± 0.18 cal. per gm.The freezing points of very concentrated solutions of hydrogen peroxide calculated from these data agree closely with the experimental ones. Preliminary measurements of the heat of decomposition of hydrogen peroxide catalyzed by platinum black were also made at 0° and at various concentrations. The results point to 23.54 ± 0.04 kcal. per mole for the heat of the reaction[Formula: see text]a value slightly higher than those found by previous experimenters.

MEASUREMENT OF THE INTENSITY-DEPENDENT REFRACTIVE INDEX USING COMPLETE SPATIO-TEMPORAL PULSE CHARACTERIZATION

2005 ◽  
Vol 14 (01) ◽  
pp. 9-20 ◽  
Author(s):  
GIOVANNI PIREDDA ◽  
CHRISTOPHE DORRER ◽  
ELLEN M. KOSIK WILLIAMS ◽  
IAN A. WALMSLEY ◽  
ROBERT W. BOYD
Keyword(s):  
Refractive Index ◽  
Phase Modulation ◽  
Optical Glass ◽  
Optical Parameters ◽  
Transverse Coordinate ◽  
A Value ◽  
Spatio Temporal ◽  
Pulse Characterization ◽  
Good Agreement

We use complete spatio-temporal characterization of an ultrashort pulse to study self-phase modulation and other propagation effects in a sample of SF59 optical glass. The goal of this work is to perform accurate experimental measurements of the optical parameters of material samples. From the measured dependence of the self-induced phase shift on the transverse coordinate, we deduce a value of the coefficient n2 of the intensity-dependent refractive index that is in good agreement with previous measurements. We also observe that the spectrum of the transmitted pulse can be explained only approximately in terms of the solution to the nonlinear Schrödinger equation.

scholarly journals Optical Properties of Epitaxial Plt Thin Films

1995 ◽  
Vol 401 ◽  
Author(s):  
Y. Kim ◽  
A. Erbil ◽  
L. A. Boatner ◽  
L. Steingart ◽  
T. Mensah ◽  
...  
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Metalorganic Chemical Vapor Deposition ◽  
Lattice Mismatch ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Refractive Indices ◽  
Dispersion Formula ◽  
Epitaxial Heterostructures ◽  
Good Agreement

AbstractMetalorganic chemical vapor deposition (MOCVD) was used to prepare epitaxial or highly oriented PLT (Pb1-xLaxTiO3) thin films with x in the range of 0.21 to 0.34. The growth of PLT films resulted in three-dimensional epitaxial heterostructures on (100) surface of the MgO and the KTaO3 substrates. The PLT film grown on the KTaO3 (100) substrate has a significantly lower minimum channeling yield compared to that on the MgO (100) substrate because of the smaller lattice mismatch. The thickness and the refractive indices in the wavelength range of 435 to 1,523 nm were measured by the prism coupling method. The measured film thickness of 570 nm was in good agreement with that from RBS measurements. The refractive index of PLT film is smaller than that of PbTiO3, its difference at 632.8 nm is about 2.5 %. The dispersion of the refractive index was well fitted to a Sellmeier dispersion formula.

RESEARCH ON REFRACTIVE INDEX OF TERNARY SOLUTION

2011 ◽  
Vol 25 (11) ◽  
pp. 841-845 ◽  
Author(s):  
MIN ZHU ◽  
TAO ZHANG
Keyword(s):  
Refractive Index ◽  
Experimental Results ◽  
Refractive Indices ◽  
Ternary Solution ◽  
Ternary Solutions ◽  
Conventional Methods ◽  
Work Supports ◽  
Good Agreement

It is known that many conventional methods are not suitable for calculating the refractive index of a medium composed of more than two ingredients. In this paper, refractive indices of H 2 O – NaCl – KBr ternary solutions have been calculated by using the equation n = 1 + ρΣ(cjDMj). The calculated results were in good agreement with the experimental results. Theoretically, the equation n = 1 + ρΣ(cjDMj) can be applied to calculate refractive index of a medium composed of any number of ingredients. This work supports this point.

Light microscopy of ceramics

1993 ◽  
Vol 51 ◽  
pp. 908-909
Author(s):  
Walter C. McCrone
Keyword(s):  
Refractive Index ◽  
Light Microscopy ◽  
Light Microscope ◽  
Polarized Light ◽  
Refractive Indices ◽  
Complete Coverage ◽  
The Subject ◽  
Lower Refractive Index

An excellent chapter on this subject by V.D. Fréchette appeared in a book edited by L.L. Hench and R.W. Gould in 1971 (1). That chapter with the references cited there provides a very complete coverage of the subject. I will add a more complete coverage of an important polarized light microscope (PLM) technique developed more recently (2). Dispersion staining is based on refractive index and its variation with wavelength (dispersion of index). A particle of, say almandite, a garnet, has refractive indices of nF = 1.789 nm, nD = 1.780 nm and nC = 1.775 nm. A Cargille refractive index liquid having nD = 1.780 nm will have nF = 1.810 and nC = 1.768 nm. Almandite grains will disappear in that liquid when observed with a beam of 589 nm light (D-line), but it will have a lower refractive index than that liquid with 486 nm light (F-line), and a higher index than that liquid with 656 nm light (C-line).

Investigating the Nonlinear Optical Response of Pepper Oil under Low Power Irradiation with Continuous Wave Visible Laser Beam

2020 ◽  
pp. 131-138
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Continuous Wave ◽  
Diffraction Integral ◽  
Visible Laser ◽  
Limiting Property ◽  
Kirchhoff Diffraction Integral ◽  
Theoretical Results ◽  
Good Agreement

The nonlinear optical properties of pepper oil are studied by diffraction ring patterns and Z-scan techniques with continuous wave beam from solid state laser at 473 nm wavelength. The nonlinear refractive index of the sample is calculated by both techniques. The sample show high nonlinear refractive index. Based on Fresnel-Kirchhoff diffraction integral, the far-field intensity distributions of ring patterns have been calculated. It is found that the experimental results are in good agreement with the theoretical results. Also the optical limiting property of pepper oil is reported. The results obtained in this study prove that the pepper oil has applications in nonlinear optical devices.

Application of the turbidity ratio method in the spherical particle size determination in the range m ∈ and α ∈

1979 ◽  
Vol 44 (7) ◽  
pp. 2064-2078 ◽  
Author(s):  
Blahoslav Sedláček ◽  
Břetislav Verner ◽  
Miroslav Bárta ◽  
Karel Zimmermann
Keyword(s):  
Refractive Index ◽  
Spherical Particle ◽  
Ratio Method ◽  
Refractive Indices ◽  
Relative Refractive Index ◽  
Particle Size Determination ◽  
The Individual ◽  
The Given ◽  
Turbidity Ratio ◽  
Selection Of

Basic scattering functions were used in a novel calculation of the turbidity ratios for particles having the relative refractive index m = 1.001, 1.005 (0.005) 1.315 and the size α = 0.05 (0.05) 6.00 (0.10) 15.00 (0.50) 70.00 (1.00) 100, where α = πL/λ, L is the diameter of the spherical particle, λ = Λ/μ1 is the wavelength of light in a medium with the refractive index μ1 and Λ is the wavelength of light in vacuo. The data are tabulated for the wavelength λ = 546.1/μw = 409.357 nm, where μw is the refractive index of water. A procedure has been suggested how to extend the applicability of Tables to various refractive indices of the medium and to various turbidity ratios τa/τb obtained with the individual pairs of wavelengths λa and λb. The selection of these pairs is bound to the sequence condition λa = λ0χa and λb = λ0χb, in which b-a = δ = 1, 2, 3; a = -2, -1, 0, 1, 2, ..., b = a + δ = -1, 0, 1, 2, ...; λ0 = λa=0 = 326.675 nm; χ = 546.1 : 435.8 = 1.2531 is the quotient of the given sequence.

Standardisation of von Willebrand Factor in Therapeutic Concentrates: Calibration of the 1st International Standard for von Willebrand Factor Concentrate (00/514)

2002 ◽  
Vol 88 (09) ◽  
pp. 380-386 ◽  
Author(s):  
Dawn Sands ◽  
Andrew Chang ◽  
Claudine Mazurier ◽  
Anthony Hubbard
Keyword(s):  
Von Willebrand Factor ◽  
International Study ◽  
Expert Committee ◽  
International Standard ◽  
A Value ◽  
Significant Difference ◽  
Factor Concentrate ◽  
Von Willebrand ◽  
Willebrand Factor ◽  
Good Agreement

SummaryAn international study involving 26 laboratories assayed two candidate von Willebrand Factor (VWF) concentrates (B and C) for VWF:Antigen (VWF:Ag), VWF:Ristocetin Cofactor (VWF:RCo) and VWF:Collagen binding (VWF:CB) relative to the 4th International Standard Factor VIII/VWF Plasma (4th IS Plasma) (97/586). Estimates of VWF:Ag showed good agreement between different methods, for both candidates, and the overall combined means were 11.01 IU/ml with inter-laboratory variability (GCV) of 10.9% for candidate B and 14.01 IU/ml (GCV 11.8%) for candidate C. Estimates of VWF:RCo showed no significant difference between methods for both candidates and gave overall means of 9.38 IU/ml (GCV 23.7%) for candidate B and 10.19 IU/ml (GCV 24.4%) for candidate C. Prior to the calibration of the candidates for VWF:CB it was necessary to calibrate the 4th IS Plasma relative to local frozen normal plasma pools; there was good agreement between different collagen reagents and an overall mean of 0.83 IU per ampoule (GCV 11.8%) was assigned. In contrast, estimates of VWF:CB in both candidates showed large differences between collagen reagents with inter-laboratory GCV’s of 40%. Candidate B (00/514) was established as the 1st International Standard von Willebrand Factor Concentrate by the WHO Expert Committee on Biological Standardisation in November 2001 with assigned values for VWF:Ag (11.0 IU/ampoule) and VWF:RCo (9.4 IU/ampoule). Large inter-laboratory variability of estimates precluded the assignment of a value for VWF:CB.

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