Ibhodi lesifunda langaphakathi le-cow silica gel patting lamp lifakwe i-resistor ebucayi yomsindo.Lapho abantu beshaya izandla, kuzokhanya, futhi lapho beshaya izandla, kuyaphuma.Ngakho-ke, ingafakwa emhubheni, ekhabetheni, esihlalweni semoto, ekamelweni, njll., ukuze abantu bakwazi ukubuyela ekhaya noma kwezinye izindawo ezimnyama ebumnyameni ebusuku.Ngompompi wezandla zabo, isibani singakhanyiswa, futhi abantu bangazizwa bekhululekile.
