Pib qhia tus nqi them
Yooj yim xwb tseem hu ua" tus nqi yooj yim" lossis" tus nqi them tseem ceeb" ;. Ntawm txhua hom kev foob, tus nqi ntawm hluav taws xob them yog qhov tsawg tshaj plaws. Cov neeg hu tus nqi them tsawg tshaj plaws rau qhov kev ua haujlwm qis, uas tseem yog ib qho ntawm theem pib ntawm physics. Cov cim e feem ntau siv. Tus nqi them yooj yim e=1.60217663410 × 10-19 Coulomb (feem ntau coj li e=1.6 × 10-19C) yog tus nqi coj los ntawm hluav taws xob lossis hluav taws xob. Tus nqi coj los ntawm ib lub cev ntim khoom yog tus lej sib xyaw ntawm lossis sib npaug rau e.