How Everything Works
How Everything Works How Everything Works
 

QUESTIONS AND ANSWERS
 
Question 384

What actually causes a fluorescent bulb to burn out?
The electrodes age, particularly during start up. The endless bombardment of charged particles gradually chips or "sputters" material off of the electrodes until they are no longer able to sustain a steady discharge. The final blow usually occurs when the heater filament breaks and the lamp cannot be started at all.
         

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