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Heinrich Erfle : ウィキペディア英語版 | Heinrich Erfle Heinrich Erfle (born April 1, 1884, in Durkheim, died April 8, 1923, in Jena) was a German optician who spent most of his career at Carl Zeiss. In 1917 he invented the first wide-field eyepieces for telescopes and binoculars. During his short life he developed a number of new designs for telescopes and eyepieces.〔http://telescopes.toptenreviews.com/telescope-eyepiece-review/the-language-of-eyepieces.html〕 ==Education== Heinrich Erfle studied at the Ludwig-Maximilians-Universität and the Technical University of Munich (TUM), from which he graduated in 1907 with a thesis on "Optical properties and electron theory." His dissertation advisers were Wilhelm Ebert and Sebastian Finsterwalder.〔(【引用サイトリンク】 work =Mathematics Genealogy Project )〕
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