18-06-2011, 09:59 AM
Incandescent bulbs can be made to last much longer than a thousand hours and even now ruggedised bulbs can be obtained that will survive 10's of thousands of hours. Obviously the lighting industry quickly realised that long lasting bulbs were not exactly good business for them !
Aviation bulbs are ruggedised for long life and the military have a ruggedised spec for certain applications.
I recall when low energy bulbs were introduced and were claimed to have much longer life than incandescent, in my experience they didn't but I have noticed that the newer types are much better.
Can't help wondering how the history of the bulb in this story can be proved though.
Aviation bulbs are ruggedised for long life and the military have a ruggedised spec for certain applications.
I recall when low energy bulbs were introduced and were claimed to have much longer life than incandescent, in my experience they didn't but I have noticed that the newer types are much better.
Can't help wondering how the history of the bulb in this story can be proved though.
