e/Speculum metal

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has glosseng: Speculum metal is a mixture of around two-thirds copper and one-third tin making a white brittle alloy that can be polished to make a highly reflective surface. It is used primarily to make different kinds of mirrors including early reflecting telescope optical mirrors. Speculum metal can also be used as the metallic coating on glass mirrors (as opposed to silver or aluminium) giving a reflectivity of 68% at 6000 angstroms when evaporated onto the surface.
lexicalizationeng: speculum metal
instance of(noun) a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor
atomic number 29, copper, Cu
Meaning
German
has glossdeu: Spiegelmetall ist eine sehr harte, gut polierbare, weißliche Bronzelegierung aus Kupfer, Zinn und Zusätzen anderer Metalle, die die Härte und Polierbarkeit verbessern.
lexicalizationdeu: Spiegelmetall
Japanese
has glossjpn: スペキュラム合金(スペキュラムごうきん)はスズの成分比が40%程度と多い、銅-スズ合金である。反射望遠鏡の反射鏡の材料として使用された。
lexicalizationjpn: スペキュラム合金
Malay (macrolanguage)
has glossmsa: Logam spekulum adalah aloi putih yang sangat keras dan terdiri daripada 4 bahagian tembaga dan satu bahagian timah, dan menurut sumber-sumber lain, 67% tembaga dan 33% timah; sesetngah komposisi mengandungi 1–2% arsenik. Komposisi dengan 45% timah mempunyai daya tahan terhadap sebam (kekusaman) yang lebih baik.
lexicalizationmsa: Logam spekulum
Moldavian
has glossron: Speculumul este un aliaj antic argintiu format din cupru cu o cantitate mare de staniu. A fost utilizat pentru monede de către triburile celtice din Europa centrală şi de vest în epoca lui Cezar.
lexicalizationron: Speculum
Media
media:img40-foot telescope mirror.jpg

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