Replacing the filament (tungsten filament) of incandescent lamp with copper wire with low resistance will greatly reduce the luminous ability of bulb, but will greatly improve its life. Is this sentence correct? Why? Tungsten wire has high melting point, high resistance and thermoluminescence at high temperature, and is mainly used for light bulbs.

From a purely theoretical point of view, if the tungsten wire is replaced by a wound copper wire (generally tungsten wire), the heat generated by heating should be analyzed first. If the heat is low, the temperature generated is lower than the melting point of copper, and the environmental life is naturally not a problem, but the low resistance of copper naturally makes it separate from the conductor. According to P=UI, or p = I 2r, or p = U 2r, the conductor must divide the work. Tungsten wire has high voltage and power because of its high resistance.

If the luminous capacity decreases, copper will melt when it is hot, and naturally it cannot maintain its life.

In fact, copper is not a good choice as a luminescent material.