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哦 真好 又學到新知識啦!!真係唔知原來有有顆叫ipk的球哦!
IPK 的全名是「International Prototype Kilogram（國際仟克原器）」，根據小弟最後一次看到的新聞的印象，目前 IPK 仍然是以存放於 BPIM 的鉑銥合金圓柱為準；至於上面照片裡面那顆球，則是後來 Avogadro project 計畫用來取代原本鉑銥合金圓柱的矽晶球，不過目前似乎還沒有成為正式的 IPK，因為大部分的科學家傾向於用更具有普遍性的方法來定義公斤。
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Reader Comments (Page 1 of 1)
Kewa Chan @ Jul 3rd 2008 10:52PM
哦 真好 又學到新知識啦!!
真係唔知原來有有顆叫ipk的球哦!
不笑的老Ｋ @ Jul 3rd 2008 11:10PM
IPK 的全名是「International Prototype Kilogram（國際仟克原器）」，根據小弟最後一次看到的新聞的印象，目前 IPK 仍然是以存放於 BPIM 的鉑銥合金圓柱為準；至於上面照片裡面那顆球，則是後來 Avogadro project 計畫用來取代原本鉑銥合金圓柱的矽晶球，不過目前似乎還沒有成為正式的 IPK，因為大部分的科學家傾向於用更具有普遍性的方法來定義公斤。