[問題]熱發射問題
https://en.wikipedia.org/wiki/Thermionic_emission
實驗中
熱發射電流量測都是在真空玻璃內作
想問說,如果是在一般非真空的環境做
也會得到一樣的效果嗎?
我自己是想說,鎢絲加熱後仍應該會發射電子
然後電子會跟空氣分子結合,但還是負電,
所以還是會到正極
那電流量到的應該也要差不多跟真空一樣才是
還請幫忙釋疑
感恩
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