Thomas alva edison had invented the electric bulb. he had used many products for the filament including his hair atlast he used tungesten. uin this experiment he wasted over 4000$. it works when the circute is complete. its filled with argon, or krypton gases.
its filament gets fused when it gets over heated.
The inventor Thomas Alva Edison  experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb filled argon glowed  for  long hours. Subsequently he could produce a bulb that could glow for over 1500 hours and hence the commercial production started in 1880.