[笑話] 研究顯示 太陽餅裡沒有太陽
車輪餅裡也沒有車輪
鉛筆裡也沒有鉛
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※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 59.127.251.59
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現在用的鉛筆成分是石墨 為碳元素構成 其中會加入黏土以調整硬度及顏色深度
是在約西元 1500 年左右由英國人發現
當時人們發現石墨可以拿來塗在綿羊上以方便標記
當時是科學草創時期 因此有好長一段時間石墨被誤認為鉛
直到今日中文仍然使用鉛筆當作名稱 因而容易使人誤會
如果追溯至古羅馬時期 確實曾以鉛為筆芯製作 但離現在已經太久遠了
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08/20 03:09, , 30F
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老實說我只是想發廢文...
只是被 2F 救援了這樣
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我看不出是在打臉啥
現在的鉛筆就是不含鉛
鉛筆之所以被誤認為含鉛 是因為當時科學家以為石墨是鉛的一種
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我真的不知道會有這麼多推...Orz
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08/20 12:05, , 53F
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我怎記得我沒在joke看過鉛筆沒有鉛QQ
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好吧不算救援 2F說出了大家的心聲
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因為這是一篇廢文不是笑話阿..
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你才走錯版吧 甚麼時候笑話版沒廢文了?
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你發現了嗎? 我只回噓文的人喔 >.^
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08/20 19:21, , 72F
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這是joke首發
※ 編輯: s25g5d4 來自: 59.127.251.59 (08/20 19:43)
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ㄧ
ㄢˋ
不用謝我了
※ 編輯: s25g5d4 來自: 59.127.251.59 (08/20 20:17)
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真的
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08/21 00:36, , 78F
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我也覺得還OK
※ 編輯: s25g5d4 來自: 59.127.251.59 (08/21 12:35)
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