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dim bulbs last longest (the 95 year light bulb)

by netsky / October 26, 2004 5:46 AM PDT

Non political intellectual discourse:

You've all heard about the few, ancient light bulbs operating for up to a century and still going strong.

how?

By incandescing a filament a lower than design-center temperature, the filament does not evaporate, embrittle nearly so quickly. Nor does it provide the rated measure of visible light.

To make your own millenial light bulb experiment, operate the bulb at just enough current to make the filament glow orange red. It will last indefinitely.

Operate the same bulb at 120V (if that be it's design center; it will last, say for 750 hours.

At 130 volts it gives better light but lasts, say 100 hours

At 100 volts it gives yellow light but lasts, say 10,000 hours.

At 50 volts it is cheery orange and lasts perhaps, 100,000 to one million hours.

At 20 volts it probably emits just dull orange. At this minor heat the filament hardly ages at all. Orange. Will last so long that the Head Orangutang of Planet of the Apes will marvel: here was the brightest and only good idea from those idiot humans who raped and savaged our kind until they themselves died off from terminal ugliness of the soul.

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(NT) (NT) How about a 130V bulb at 120? :)
by Dragon / October 26, 2004 6:07 AM PDT
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good question!
by netsky / October 26, 2004 6:50 AM PDT

The 130V light bulb run at 120 volts gives you us the touted "long life bulb".

At expense of lumen efficency (light output per watt of power consumed), the 130V design-center bulb is sturdier-lived than a standard 120V bulb. But what a waste of power.

Today there is little reason for any of us to be using conventional incandescent bulbs. MOST of the electrical energy they convert, by resistance, into incandescant light, is LOST in the form of infrared heat.

Unless you are heating your home's interior in winter (most are) the incandescent bulb is a waste of current.

And if your home heat comes by oil heating, then probably even the 'free heat' of wasteful incandescent is a needless econonomic drag.

Today there are a whole new generation of compact flourescent bulbs. About seven times more -efficient- than incandescent. About ten times longer lived. Will save any of you much money and hassle- and they give a light quality/color fully comparable to incandescent.

One drawback: they cannot be "dimmed" successfully.


For outdoor lantern fixtures, average floor lamps and table lamps the compact flourescent is available in lumen-equivalents of 20W to 150W old-style bulbs.

Here, then, is a way for even us Dim Bulbs to do something small and bright, to reduce our cost of living and our dependence upon arab terrorists who gut our wallets worse each passing month.

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