the mirror in a reflecting telescope which receives and reflects the rays of light from the object.
单词 | θ64967 |
释义 | the world > physical sensation > sight and vision > optical instruments > mirror > [noun] > speculum (5) object-speculum1672 the mirror in a reflecting telescope which receives and reflects the rays of light from the object. metal1693 An object made of metal. A metal mirror of an astronomical reflecting telescope. Obsolete. speculum1704 spec. A metallic mirror forming part of a reflecting telescope. mirror1762 A polished or coated surface which is curved so as to reflect light in various specific ways; †a lens or burning glass (obsolete). Cf. speculum, n. 2. reflector1815 Astronomy. A mirror forming part of a reflecting telescope. Cf. sense 3. |
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