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作者 blackbrid 在 PTT [ Physics ] 看板的留言(推文), 共3則
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[轉錄][考題] 98台北縣高中職聯招-物理科
[ Physics ]3 留言, 推噓總分: +1
作者: alenbe - 發表於 2009/06/15 16:59(16年前)
7F→blackbrid:3.要在真空中是因為避免電子束打到空氣產生二次電子形成06/14 10:35
8F→blackbrid:雜訊.2是因為電子束能量高.相對波常就很短.不易形成繞射06/14 10:37
10F推blackbrid:可見光能量最高就那樣了.在高就不是可見光了06/14 20:12
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