省油燈是起源於中國四川邛窯瓷器的一項發明,南宋著名詩人陸游所寫《老學庵筆記》就對省油燈有所記載。該燈外型似盞,但是有一下部夾層,上層放油下層注入水,水可以降低油面的溫度,點燈時節約1/3的燈油消耗。[1]

經過演變也成為俚語「不是省油的燈」依據由來。

參考

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