We've all had a time or
too two that when you really needed light, and I mean need it immediately, and you flip on the switch, and with a pop and a bright flash, your incandescent is toast. However, I am wondering why this happens.
I know all things will break eventually during use and it's impossible for it not to break over millions of years, but really, why does it happen so shortly? I have concluded that the heating and cooling of the filament so fast is damaging to it, and it just gets to a point where the filament becomes fragile and snaps. But will they not burn out if you leave them on constantly? I don't really mean forever, but I'm mostly asking if it will have 5-6 times longer life than before, not if it will last indefinitely. Just for completeness since we're talking about burning out and the filament expanding due to sudden temperature changes: Will dimming it slowly over a few seconds before turning it off/on help too? (Letting it cool down/warm up slowly and not a sudden reaction.)