platinum black
A soft, dull black powder consisting of finely divided metallic platinum obtained by reduction and precipitation from its solutions. It absorbs oxygen to a high degree, and is employed as an oxidizer.
(chiefly Maryland, Delaware) Synonym of shatter (“a pine needle”).
To extend an olive branch; to make a peace offering; to attempt to restore peaceful relations.
present participle of denay
化学者は白金の微粉末である白金黒の試料を慎重に扱い、その微粒子が酸素をよく吸収して強力な酸化剤として作用することを認識していた。
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