世間萬物的存在,必定有其存在的價值和意義,每一個事物的產生必定有其產生的根源,并非憑空而降。
Rubidium 銣
1861 年,德國化學家本生 ( R.Bunsen )和德國的基爾霍夫 (G.R.Kirchhoff)處理鋰云母,制成溶液,該溶液中除堿金屬外,不含其它元素。然后加入少許氯化鉑即得到大量沉淀,在分光鏡上檢查沉淀物時,發現在鉀元素(K)兩條線之間出現兩條深紫色的線。該沉淀不斷用熱水洗滌,終于在灼燒沉淀的火焰中,發現鉀線消失,而出現了紅、黃和綠色等新明線數條,這些明線都不屬于當時已知的元素。特別是一條深紅的明線,位置正在太陽光譜最紅一端,于是他們斷定分離出了一種新元素,同時命名新元素 為“銣”。同年,本生又用電解法首次制備出游離的金屬銣。命名“Rubidium”,源自拉丁語,意為“最紅的紅色”或“暗紅”。
ruby Ruby goes back ultimately to Latin ruber ‘red’, a descendant of the same Indo-European base as produced English red. From it was derived the medieval Latin adjective rubīnus, which was used in the term lapis rubīnus ‘red stone’. In due course rubīnus itself came to be employed as a noun in this sense, and it passed into English via Old French rubi. Other English words from the same source include rubella, rubicund, rubidium, and rubric (headings in ancient and medieval manuscripts were often written in red ink).
rubella [醫]風疹
rubicund adj. 紅潤的, 透紅的
【同】 florid ruddy sanguine
rubric n. 種, 類, 題目, 標題, 注釋, 書或稿件中用特殊字體顏色(如紅色)標出的內容, 成規, 習俗
adj. 紅色的, 用紅色寫的