Application of the Hodkinson Scattering Model to Particles of Low Relative Refractive Index*

1970 ◽  
Vol 60 (4) ◽  
pp. 573 ◽  
Author(s):  
Paul F. Mullaney
Keyword(s):  
Refractive Index ◽  
Relative Refractive Index ◽  
Scattering Model

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.

scholarly journals On the diffraction of light by spheres of small relative index

1914 ◽  
Vol 90 (617) ◽  
pp. 219-225 ◽  
Keyword(s):  
Refractive Index ◽  
Wave Length ◽  
High Index ◽  
Short Paper ◽  
Relative Refractive Index ◽  
Small Particles ◽  
Yellow Light ◽  
Relative Index ◽  
Light Passing ◽  
Diffraction Of Light

In a short paper “On the Diffraction of Light by Particles Comparable with the Wave-length,”* Keen and Porter describe curious observations upon the intensity and colour of the light transmitted through small particles of precipitated sulphur, while still in a state of suspension, when the size of the particles is comparable with, or decidedly larger than, the wave-length of the light The particles principally concerned in their experiments appear to have decidedly exceeded those dealt with in a recent paper, where the calculations were pushed only to the point where the circumference of the sphere is 2·25 λ. The authors cited give as the size of the particles, when the intensity of the light passing through was a minimum, 6 to 10 μ, that is over 10 wave-lengths of yellow light, and they point out the desirability of extending the theory to larger spheres. The calculations referred to related to tho particular case where the (relative) refractive index of the spherical obstacles is 1·5. This value was chosen in order to bring out the peculiar polarisation phenomena observed in the diffracted light at angles in the neighbourhood of 90°, and as not inappro-priate to experiments upon particles of high index suspended in water. I remarked that the extension of the calculations to greater particles would be of interest, but that the arithmetical work would rapidly become heavy.

Influence of relative refractive index on optical properties of emulsions

2001 ◽  
Vol 34 (9) ◽  
pp. 827-835 ◽  
Author(s):  
W. Chantrapornchai ◽  
F.M. Clydesdale ◽  
D.J. McClements
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Relative Refractive Index
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