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Centennial Light

Centennial Light

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Centennial Light, Livermore

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Filename:IMG_3992.JPG
Album name:mdcastle / Misc
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Keywords:Lamps
File Size:332 KB
Date added:Nov 30, 2015
Dimensions:2465 x 1848 pixels
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URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-113895
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FGS
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Rory Mercury!


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Nov 30, 2015 at 01:06 PM Author: FGS
Muslims have their Mecca place. We lighting enthusiasts have Livermore.

Why I like LEDs on top of other lighting tech?
LEDs = Upgrade 95% of the applications. (That is if you avoid eBay's LEDs).


LED brainwash? No, people uses them cuz they work well for them.

merc
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Nov 30, 2015 at 01:47 PM Author: merc
I've read somewhere it's powered through a UPS to prevent stress from switching in case of power outage.
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UCM30tBQDUECOV6VeG5W87Vg
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Nov 30, 2015 at 02:04 PM Author: Lumex120
Finally, someone here has a pic of the famous 114-year-old lightbulb. A Lifeguard could probably not last this long. By the way, the Slimline fixture near it has a glowing cathode.

Any machine is a smoke machine if you operate it wrong enough.

streetlight98
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Mike McCann


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Nov 30, 2015 at 02:20 PM Author: streetlight98
I suppose if you ran a 240V incandescent on 120V and kept it on 24/7 it would rival this too. That's the beauty of filament lamps; you dim them, they last longer. You dim any other light source and it doesn't prolong the life of the lamp. If anything it shortens the life.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

Lumex120
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UCM30tBQDUECOV6VeG5W87Vg
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Nov 30, 2015 at 02:39 PM Author: Lumex120
streetlight98, you are exactly right. If you had a mercury lamp underdriven, it would not last very long at all. What would happen if a merc was overdriven by a small amount for a long period of time? Would it prevent blackening?

Any machine is a smoke machine if you operate it wrong enough.

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Nov 30, 2015 at 02:57 PM Author: Ash
In this case, the lightibulb power might have dropped over the years by itself from evaporation of the filament. But as long as there is no hotter spot than the otehrs it will keep going.. As the power gets down, any further changes to the filament are becoming slower, so it tends to stay stable

And Mike, a LED on a resistor ballast would last virtually forever as well. Look at all those 80s red LED indicators on electronic stuff (like charge indicators on emergency lighting devices) They are still going strong, even the early LEDs that were only dim red to begin with
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Nov 30, 2015 at 03:16 PM Author: streetlight98
@ Zarlog; you would shorten the life of the lamp by overdriving it.

@ Ash; Yeah that's the problem with a lot of these new high-output LEDs; they run the diodes too hard and they dim out faster. I was thinking with the electronic drivers (and actual LED bulb itself). The driver doesn't get any benefit from being dimmed and that's usually what fails before the LEDs themselves.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

ace100w120v
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Nov 30, 2015 at 07:38 PM Author: ace100w120v
That fixture next to it is a HO or VHO actually. That needs new lamps evidently.
Even in the thumbnail I knew this was the "Centennial Bulb".
mdcastle
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mdcastle 26956281@N02
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Nov 30, 2015 at 07:52 PM Author: mdcastle
It's viewable through the glass garage doors, but if you knock on the door if the firefighters are around they'll let you come in and look at it and sign the guest book. A few years the chief got a message in the middle of the night from someone in Tennessee that noticed on the webcam that the bulb was out. When they got there in the morning they found that the UPS had failed but the bulb was fine.
ace100w120v
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Nov 30, 2015 at 07:55 PM Author: ace100w120v
I bet that was scary!
See that camera? That's a webcam that updates every 5 minutes or something...I've seen the feed before!




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Nov 30, 2015 at 08:04 PM Author:
@mdcastle- I bet that was a brown pants moment for em. would be for me if I were them.
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Brightening up my life


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Nov 30, 2015 at 08:09 PM Author: ManofHID
I remember the Mythbusters episode when they visited this! Incredible that it has run non-stop for over 100 years!
Would like to see modern technology do this!

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Down with lamp bans!


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Nov 30, 2015 at 09:20 PM Author: nicksfans
@Zarlog: The fluorescent fixture has to be HO/VHO because the cathodes never glow in Slimline lamps.

I like my lamps thick, my ballasts heavy, and my fixtures tough.

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Dec 03, 2015 at 06:34 AM Author: Flurofan96
The everlasting light of the lighting world, good job getting the fluoresant fixture alongside that has its tube EOL, shows the true thing about planned obsolescence

http://centennialbulb.org the link to the site

I will give LEDisease a taste of my shoe

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Dec 03, 2015 at 07:43 AM Author: Lumex120
The fluorescent fixture next to it has EOL lamps, oh the irony!

Any machine is a smoke machine if you operate it wrong enough.

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Rare white reflector


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Dec 03, 2015 at 01:48 PM Author: Silverliner
I was there in January 1999, I remember how dim it was!

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Collector of vintage bulbs, street lights and fluorescent fixtures.

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Dec 03, 2015 at 04:14 PM Author: FGS
@Fluofan96 - what planned obsolescence? That EOL tube is nothing more than a tube that simple died. The firemen all they need to do is relamp that fixture if they haven't done so.

Edit: I think they relamped that. The live cam shows a bright bloom at one corner where the fixture should be.

Why I like LEDs on top of other lighting tech?
LEDs = Upgrade 95% of the applications. (That is if you avoid eBay's LEDs).


LED brainwash? No, people uses them cuz they work well for them.

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Dec 03, 2015 at 04:39 PM Author: Ash
Thats not about planned obsolecence. The normal 750 / 1000 hour GLS lamp is a point of balance between lamp life and efficacy - The hotter filament, higher efficacy, shorter lamp life. For average use it is a good balance point (provided that the cost of electricity a higher power lamp would take far exceeds cost of the lamp itself)

If you want longer life, less efficient lamps, use the type they make for traffic lights - that are made for top reliability in the first X hours (so their average life is many times X). If you want to go even further, order a 240V lamp from Europe and use that on 120V
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rcm442 rcm442 rcm442
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Dec 03, 2015 at 07:54 PM Author: RCM442
I've almost seen this in person! Also, I've seen slimlines that had glowing cathodes! It was odd!!!
Also Felipe, your signature, EOLED is END OF LIFE LED!!! organic LEDs are used in displays! Not general lighting!

Linear fluorescent will never lose to LED!
I am not Anti-LED, as I have some in use at my house.
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Mike McCann


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Dec 03, 2015 at 07:58 PM Author: streetlight98
They make 130V lamps that can be used on 120V and they last virtually forever but arm dim and warmer in color since they're essentially "dimmed". A 100W 130V lamp runs at about 88W on 120V and gives the lumens somewhere around a 75W incandescent. So uses more energy for less light but you'll never have to change the bulb...

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

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Dec 04, 2015 at 08:50 PM Author: themaritimegirl
Dang, that bulb is still running!? I remember 10 years ago I first learned about it and saw the webcam video. Surprised, but at the same time not surprised, that it's still running!

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streetlight98
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Mike McCann


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Dec 05, 2015 at 07:41 AM Author: streetlight98
If it wasn't for this site I'd never know about it either. Someone here told me about it around 4 or 5 years ago.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

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All photos are brought to you by Bubby industries.


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Dec 05, 2015 at 08:05 AM Author: Solanaceae
Let's all take a moment to blame the guvment for screwing our lites up.

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mdcastle 26956281@N02
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Dec 05, 2015 at 09:28 AM Author: mdcastle
How long until the government makes them replace it with a screw-in LED?
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Dec 05, 2015 at 09:44 AM Author: Lumex120
Hopefully never.

Any machine is a smoke machine if you operate it wrong enough.

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Dec 05, 2015 at 10:11 AM Author: themaritimegirl
It's basically a historic landmark now, so I doubt the government has any interest or concern about it.

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streetlight98
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Mike McCann


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Dec 05, 2015 at 02:14 PM Author: streetlight98
I second that, Trent.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

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Mainly the electrical side of things


missriaelaine
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Nov 29, 2017 at 01:32 PM Author: sox35
I would love to visit this lamp I have friends in California, but unfortunately last time I was there I didn't know about this

Next time I visit, it's a must-see

Ria in Aberdeen
It'll be all right in the end, and if it isn't all right, it isn't the end Love

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Mainly the mechanical side of things


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Nov 29, 2017 at 02:15 PM Author: Mandolin Girl

I would love to visit this lamp I have friends in California, but unfortunately last time I was there I didn't know about this

Next time I visit, it's a must-see



Where are the Asgards with their beaming technology when you need them...

Hugs and STUFF Sammi xXx (also in Aberdeen)

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Mainly the electrical side of things


missriaelaine
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Nov 29, 2017 at 02:19 PM Author: sox35

Where are the Asgards with their beaming technology when you need them...


Indeed, as Teal'c would say...

(Can you tell our favourite TV show yet..? )

Ria in Aberdeen
It'll be all right in the end, and if it isn't all right, it isn't the end Love

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