Why does any incandescent light bulb eventually burn out?

Due to evaporation, the filament of the pakala of the light bulb becomes thinner and finally, when heated in the thinnest place to a temperature exceeding the melting point of the metal, it melts.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.