Simple method of Brewster-angle measurement for the determination of refractive indices in transparent biaxial crystal

2001 ◽  
Vol 40 (11) ◽  
pp. 2594 ◽  
Author(s):  
N. Kejalakshmy
Keyword(s):  
Angle Measurement ◽  
Brewster Angle ◽  
Refractive Indices ◽  
Biaxial Crystal ◽  
Simple Method

Refraction Indices Measurement of Hexagonal Zeolite Crystal Using Brewster Angle Method

2010 ◽  
Vol 146-147 ◽  
pp. 429-432 ◽  
Author(s):  
Irene Ling Li ◽  
Ling Fu ◽  
Hao Li ◽  
Jian Pang Zhai ◽  
Shuang Chen Ruan
Keyword(s):  
Harmonic Generation ◽  
Second Harmonic ◽  
Brewster Angle ◽  
Refractive Indices ◽  
Zeolite Crystal ◽  
Simple Method ◽  
Nonlinear Properties ◽  
Birefringent Crystals ◽  
Angle Method ◽  
Hexagonal Crystals

A simple method for measuring the refraction indices of small hexagonal crystals is studied. The method is based on Brewster angle law. The refractive indices are confirmed by measuring the Brewster angle on two different surfaces. As an example, the measured refractive indices for hexagonal zeolite crystals are ne=1.488 and no=1.327, respectively, which are necessary for further investigations on the nonlinear properties of these zeolite crystal, such as second harmonic generation (SHG) effect. This method avoids the damage of the sample, and is simple and quick, which is suitable for the measurements of small birefringent crystals.

Refractive indices determination of a small-size nonlinear biaxial crystal by use of double-refraction measurements with a laser beam

2006 ◽  
Vol 23 (5) ◽  
pp. 852 ◽  
Author(s):  
Patricia Segonds ◽  
Benoît Boulanger ◽  
Lydie Ferrier ◽  
Bertrand Ménaert ◽  
Julien Zaccaro
Keyword(s):  
Laser Beam ◽  
Refractive Indices ◽  
Biaxial Crystal ◽  
Double Refraction

scholarly journals A simple method for the determination of refractive indices of (rough) transparent solids

2005 ◽  
Vol 40 (3) ◽  
pp. 575-582 ◽  
Author(s):  
R. J. Nussbaumer ◽  
M. Halter ◽  
T. Tervoort ◽  
W. R. Caseri ◽  
P. Smith
Keyword(s):  
Refractive Indices ◽  
Simple Method

Development of a simple method for the determination of single nucleotide polymorphisms

2010 ◽  
Vol 34 (8) ◽  
pp. S75-S75
Author(s):  
Weifeng Zhu ◽  
Zhuoqi Liu ◽  
Daya Luo ◽  
Xinyao Wu ◽  
Fusheng Wan
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Nucleotide Polymorphisms ◽  
Simple Method ◽  
Single Nucleotide

A Standard Primary Toxicity Bioassay Using Daphnia Magna as a Test Species

1977 ◽  
Vol 12 (1) ◽  
pp. 27-50 ◽  
Author(s):  
L.A. Behie ◽  
J.E. Zajic ◽  
D. Berk ◽  
R.J.P. Brouzes ◽  
V.A. Naish
Keyword(s):  
Statistical Analysis ◽  
Daphnia Magna ◽  
Biological Indicator ◽  
Pulp And Paper ◽  
Toxicity Bioassay ◽  
Simple Method ◽  
Test Species ◽  
Test Organisms ◽  
Dilution Water

Abstract Although Daphnia magna have been widely used in the determination of the toxicity of various substances, there are no reports in the literature that describe a rigorous bioassay method using this organism as a test species. The test described herein involves the standariza-tion of various important aspects of the method such as the age of the test organisms, and the dilution water used for the preparation of the various toxicant concentrations. Also described is a simple method for the statistical analysis of the results. The sensitivity of the proposed bioassay is demonstrated by determining the toxicity of various pulp and paper effluents. Finally, extensive bioassays were carried out simultaneously with rainbow trout and Daphnia magna indicating that Daphnia are as good a biological indicator of acute toxicity as fish.

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