Just to brighten up a winter's Monday morning (for those of us in the Northern hemisphere), another thread on these forums has just reminded me of this light bulb which has been lit for 117 years...there's even a live webcam so that you can check it's still alight
And, of course, also one of the critical things is that it hasn't been turned on and off very often - there will be others in the IET who know much more about this than I do, but I seem to remember that thermal shock is usually the trigger for failures of incandescent lights. I'm guess when they have turned it off and on in recent years they've done it very gently!
And, of course, also one of the critical things is that it hasn't been turned on and off very often - there will be others in the IET who know much more about this than I do, but I seem to remember that thermal shock is usually the trigger for failures of incandescent lights. I'm guess when they have turned it off and on in recent years they've done it very gently!
