Lub teeb pov thawj tawg siv nyob rau hauv qhov chaw muaj kev phom sij uas muaj cov pa roj thiab hmoov av, uas tuaj yeem tiv thaiv arcs, sparks, thiab kub kub uas yuav tshwm sim nyob rau hauv lub teeb los ntawm igniting combustible gases thiab plua plav nyob rau hauv ib puag ncig ib puag ncig, yog li ua tau raws li qhov yuav tsum tau ua pov thawj tawg.