作者hsuan922157 (秋心)
看板NUU_ER
標題[轉錄]剛剛在奇摩知識家看到...真是無言阿..
時間Mon Mar 26 07:43:40 2007
※ [本文轉錄自 StupidClown 看板]
作者: rushwallance (ꜩ 看板: StupidClown
標題: 剛剛在奇摩知識家看到...真是無言阿..
時間: Fri Mar 23 13:20:51 2007
發問者： david
氦氖雷射在真空中的波長為633nm，請問(a)在真空中的頻率，(b)在玻璃中的波長(n=1.5)，(c)在玻璃中的頻率，(d)在玻璃中的光速
請各位高手~幫我解這一題~感恩
回答者： lebbb.tw
(a) 頻率＝光速/波長
f=(3x10^8 ) / (633x10^-9) 單位 Hz
(b)玻璃中波長=真空中波長/折射率
=(633)/1.5 單位 nm
(c)玻璃中的頻率與真空中頻率相同，答案同(a)
(d)玻璃中的光速＝真空中光速/折射率
= 3x10^8 /1.5 單位 m/s
參考資料
因為題目是我出的.....
因為題目是我出的.....
發問者評價：
謝謝老師的指教~~我會更努力~更用功~~
---------------------------------------------------------
這樣問都會被老師遇到...真是很無言...
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