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Light bulb working for 117 years

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 smiley

http://www.centennialbulb.org/


I do like reliable technology...


Cheers,


Andy
Parents
  • I believe that non-directional filament lamps are banned in the EU as from September 2018 (Directive EC 244/2009 ?) - but they are still available to buy so presumably it's the manufacture and import that's banned? 


    There are also a load of exclusions as below, but I think some of these may have been addressed by later directives? (Don't ask me what the first one means!)

    (a) lamps having the following chromaticity coordinates x and y:

    — x < 0,200 or x > 0,600

    — y < – 2,3172 x2 + 2,3653 x – 0,2800 or

    y > – 2,3172 x2 + 2,3653 x – 0,1000;

    (b) directional lamps;

    (c) lamps having a luminous flux below 60 lumens or above 12 000 lumens;

    (d) lamps having:

    — 6 % or more of total radiation of the range 250-780 nm in the range of 250-400 nm,

    — the peak of the radiation between 315-400 nm (UVA) or 280-315 nm (UVB);

    (e) fluorescent lamps without integrated ballast;

    (f) high-intensity discharge lamps;

    (g) incandescent lamps with E14/E27/B22/B15 caps, with a voltage equal to or below 60 volts and without integrated transformer in Stages 1-5 according to Article 3.



Reply
  • I believe that non-directional filament lamps are banned in the EU as from September 2018 (Directive EC 244/2009 ?) - but they are still available to buy so presumably it's the manufacture and import that's banned? 


    There are also a load of exclusions as below, but I think some of these may have been addressed by later directives? (Don't ask me what the first one means!)

    (a) lamps having the following chromaticity coordinates x and y:

    — x < 0,200 or x > 0,600

    — y < – 2,3172 x2 + 2,3653 x – 0,2800 or

    y > – 2,3172 x2 + 2,3653 x – 0,1000;

    (b) directional lamps;

    (c) lamps having a luminous flux below 60 lumens or above 12 000 lumens;

    (d) lamps having:

    — 6 % or more of total radiation of the range 250-780 nm in the range of 250-400 nm,

    — the peak of the radiation between 315-400 nm (UVA) or 280-315 nm (UVB);

    (e) fluorescent lamps without integrated ballast;

    (f) high-intensity discharge lamps;

    (g) incandescent lamps with E14/E27/B22/B15 caps, with a voltage equal to or below 60 volts and without integrated transformer in Stages 1-5 according to Article 3.



Children
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