3 ms·
tl;dr Christmas light bulbs each have a bypass wire which is initially insulated to avoid shorting the filament. If the filament burns out, the new high electri
by vortico 12y ago
tl;dr Christmas light bulbs each have a bypass wire which is initially insulated to avoid shorting the filament. If the filament burns out, the new high electric potential burns off the insulation, thus re-completing the circuit for the rest of the bulbs.
- shreyas056 12y agoActually this is what I hate about such articles, they extrapolate two sentence explanation into huge corpus.