Thaum lub zog hluav taws xob sab nraud ntawm cov hluav taws xob, cov khoom tsim tawm ntawm lub hloov hluav taws xob yuav tsim tawm ntau txhiab lossis ntau txhiab lossis ntau txhiab leej.
Thaum qhov ntsuas hluav taws xob no siv rau hauv cov hluav taws xob ntawm ob qhov kawg ntawm neon teeb, cov roj teeb tsub hauv cov neon teeb tau nrawm rau hauv qhov hluav taws xob high voltage thiab ya mus rau qhov hluav taws xob, uas tuaj yeem ua kom muaj feem ntau ntawm cov hluav taws xob. Cov hluav taws xob zoo siab no tau nrawm rau hauv qhov hluav taws xob ntau hluav taws xob thiab sib tsoo nrog cov roj atoms hauv lub teeb. Thaum cov hluav taws xob no sib tsoo nrog lub zog ntawm cov roj dawb atoms, lawv ionize cov roj atoms los ua cov ions zoo thiab hluav taws xob. Qhov no yog lub ionization ntawm cov roj. Kev sib tsoo ntawm cov ntawv foob thiab cov roj atoms emits ntxiv lub zog hauv daim ntawv ntawm photons, uas ua tiav cov txheej txheem ntawm cov teeb pom kev zoo li neon teeb.
