4 ms·
Sublimation will thin out the wire, which weakens it. But the final failure mode is the fillament breaking. This can happen due to the wire getting so thin it m
by rocqua 3y ago
Sublimation will thin out the wire, which weakens it. But the final failure mode is the fillament breaking. This can happen due to the wire getting so thin it melts. But the thermal stress of power cycling can also cause the thinned out wire to break. Perhaps the micro-cracks also increase wire resistance, causing more sublimation.
The two mechanisms can easily interact.
- pfdietz 3y agoYes, that's right. And it gives the illusion that on/off cycling is aging the bulb. That's like looking at someone who dropped dead from a heart attack during exercise and concluding exercise causes aging.