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我們現在用的鏡子都是背面塗有水銀的玻璃鏡,可是古人用的却是金屬的鏡子。这些金屬鏡或者是銅錫合金的,或者是銅銀合金的,都鑄得很精致。本期封底登了兩張古鏡的照片,这兩面鏡子都是兩千年左右的古物。我国是应用铜合金最早的国家。远在四千多年前,我国人民就知道煉銅了。到了三千多年前的殷代,煉銅技术有了相当大的發展。科学家們分析了殷、周兩代的銅器的成分,知道在这个时期,我国人民用的是青銅(銅錫合
The mirrors we are using now are glass mirrors with mercury on the back, but the metal used by the ancients is a mirror. These metal mirrors are either copper-tin alloy or copper-silver alloy, all of which are exquisitely cast. This issue’s back cover has two old mirror photos, these two mirrors are two thousand or so antiquities. China is the earliest country to use copper alloy. Far more than four thousand years ago, our people knew of copper smelting. Yin Dynasty to more than 3000 years ago, there has been considerable development of copper refining technology. Scientists have analyzed the composition of the bronze ware of Yin and Zhou dynasties and learned that during this period, our people used bronze