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Diffstat (limited to 'source/know/concept/step-index-fiber/bessel-half.png')
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diff --git a/source/know/concept/step-index-fiber/bessel-half.png b/source/know/concept/step-index-fiber/bessel-half.png Binary files differnew file mode 100644 index 0000000..e316b91 --- /dev/null +++ b/source/know/concept/step-index-fiber/bessel-half.png |