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16 September 2004 @ 07:30 pm

I went to Costco on Wednesday, and among other things i got an eight pack of flurorescent lightbulbs for about $14.

The olg lightbulbs were standard 60 watt, 840 lumen bulbs. I've got a four lightbulb fixture in the living room, and the lightbulbs in it were burning out like there was no tomorrow. It seemed like i would have to replace one every month or so. I ended up keeping just two sockets filled because i was running short on bulbs and didn't want to have to use up new ones so often.

So finally i totally ran out over the weekend so lightbulbs were high on my shopping list. There were some standard bulbs at Costco, but they were only about 700 something lumen i think, and it had already been kind of dim with the old bulbs. However for a little bit more there was some kind of energy saver bulbs (i forget exactly what kind, not fluorescent i think, but something else) that were 800 lumen, which i figured might be alright. Then for a bit more than that were the flourescent ones that have a cool twisty shape and were rated at 900 lumens, so i got those. There were also some 100 watt equivalent fluorescent bulbs, but i was afraid those might be overkill. I'm not sure if those sockets are rated for 100 watts, and even if they are the extra light would probably just blind me :)

So i came home and put in two of the fluorescent bulbs, waited till nightfall and turned them on. Wow, they're bright. A lot brighter than the 7% the lumen rating difference theoretically indicates.

So these bulbs are working out great with just two,but i was wondering... Does anyone happen to know if using just two bulbs in a four bulb setting causes any problems with the current that would burn out the bulbs faster? It's been way too long since i took E&M, and i have no idea how the average light fixture is designed.
Current Mood: curiouscurious
Kirinkirinn on September 17th, 2004 05:07 am (UTC)
The twisty energy-seving bulbs are almost certainly the ones called "compact fluorescent". They're supposed to be good stuff in terms of energy savings and lasting forever. I think we have one in one of our lamps.

I don't think leaving open sockets is an issue (as long as nobody sticks a finger in 'em), but I don't really know for certain.
DonAithnendonaithnen on September 17th, 2004 08:20 am (UTC)
Well the sockets aren't empty empty, they have old burned out bulbs in them :) I have no idea if that provides a different conductivity than an empty empty socket or what though.
Kirinkirinn on September 17th, 2004 10:51 am (UTC)
Gnerally when regular incandescant light bulbs burn out it's because the filament broke, and since I'm pretty sure that through the filament is the only way for the electricity to go, it's probably equivalent to having nothing there... (Standard disclaimer IANAElectricalEngineeringMajor)