MLA Citation: Bloomfield, Louis A. "Question 384"
How Everything Works 21 Apr 2018. 21 Apr 2018 <>.
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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