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magus

蒸汽機演進圖解說明

Newcomen Stream Engine (ca 1710) 的缺點是,噴入的冷水使蒸氣冷卻時,外圍壓縮蒸氣的圓筒跟著也冷卻了。這造成下次循環時得浪費能源重新加溫圓筒。

科學家比較長壽?

我ㄧ向不喜歡統計,但統計史念起來還不錯玩。下面這個例子是前兩天唸到的,大家一起想想囉。

就說呢,十九世紀有個統計學家 Madden,他把各類型作家的死亡年齡統計了一下,分別算了平均以後,得到這麼個表:

兼差當導遊

這鍋副業真是不錯,真係激勵人向上ㄚ fist fist

喬家大院紅燈籠

我在看連續劇《喬家大院》。原來《大紅燈籠高高掛》是在喬家大院拍的ㄚ。

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