Last Updated
：2025/11/29
speculum metal
Noun
uncountable
Japanese Meaning
約2/3が銅、1/3が錫の混合物からなる、白っぽく脆い合金。研磨すると高い反射性を持つ鏡面仕上げが得られる。
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A mixture of around two-thirds copper and one-third tin making a white brittle alloy that can be polished into a highly reflective surface.
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speculum metal
The antique telescope's mirror, made of speculum metal, had been carefully polished to a brilliant silver sheen.
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The antique telescope's mirror, made of speculum metal, had been carefully polished to a brilliant silver sheen.
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