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Diameter and Refractive Index of a Cylindrical Thread Determined by Scattered Light Pattern |
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| Authors: | Yoshio Nishiyama Susumu Kurita Ikuo Yamamoto Yasuhiro Ishizuka Toru Watanabe Daisuke Kobayashi Ken-ichi Odanaka Yuka Hyogo |
| Institution: | (1) Science Education Division, Faculty of Education and Human Sciences, Yokohama National University, Yokohama 240-8501, Japan;(2) Department of Physics, Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan;(3) Department of Physics, Faculty of Education, Yokohama National University, Yokohama 240-8501, Japan |
| Abstract: | We have devised a method of determining the optimal value of both the refractive index n and the diameter D of a transparent cylinder by the scattering intensity pattern over a wide range of scattering angle. We have shown that the method is stable to small variations of data for the sample with D#x2272;10#x03BB; (wavelength) and could specifically determine the parameters of a spider#x0027;s thread as n = 1.520 (#x2212;0.033, #x002B;0.033), D=0.564 (#x2212;0.009, #x002B;0.011)#x03BC;m for #x03BB; = 632.8 nm. |
| Keywords: | scattering measurements index measurements fiber measurements pattern recognition feature extraction |
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