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单词 huygenian eyepiece
释义 huy·ge·ni·an eyepiece
\(ˈ)hīˈgēnēən-, (ˈ)hȯi-\ noun
also huy·gens eyepiece \ˈhīgənz-, ˈhȯi-\; or huy·ghe·ni·an eyepiece
Usage: usually capitalized H
Etymology: huyghenian irregular from Christian Huygens (or Huyghens) died 1695 Du. physicist + English -ian
: a compound eyepiece used especially with achromatic objectives that consists of two plano-convex lenses separated by a diaphragm with the convex sides facing the objective
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更新时间:2025/1/11 7:31:10