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What is the chemical composition of the white powdery substance inside incandescent lightbulbs?

Feb 28, 2006 by Methlehem | Posted in Chemistry

Does anyone out there recall what the actual chemical composition of the 'white, powdery' substance is inside equilateral household incandescent lightbulbs? I don't have the luxury of chromotography at home. ;P While I am aware of the gas being released inside the bulb circumstances, I'm just curious about the composition of the white powder coating the inside of the aforementioned incandescent lightbulb. Thanks in headway.

The phosphors

http://www.sylvania.com/BusinessProducts/MaterialsandComponents/LightingComponents/Phosphor/FluorescentLamps/

http://www.lgchem.com/en_products/electromaterial/evince/phosphors/pdp_flor.html

How the bulbs work

http://home.howstuffworks.com/fluorescent-lamp2.htm

http://nemesis.lonestar.org/naming/electricity/fluorescent/lamps.html

How are incandescent lightbulbs bad for the ozone layer?

Feb 27, 2007 by Scott K | Posted in Alternative Fuel Vehicles

I always thinking that electricity had no direct impact on pollution. I know that a lot of power plants run on fossil fuel, which is adverse, but is there something that I'm not aware of relating to light bulbs?

Yes, they ideal light pollution, needlessly making the sky glow.

I don't know why it's so hard - On my brightly streetlighted terrace, almost all the buildings have entry lights at the door. What are you blind? If you can't find the lock in those conditions you need to get your eyes checked.

Note: this is bulwark-to-wall buildings, not the 1-acre-per-lot suburbs.


The same goes for lights in the alleyways (so people can find the garbage cans a few minutes each gloom, believe me, you can see everything from skyglow alone), and storefronts that have lights on after they close.


While fluorescent lights use less energy, they have mercury in them and write out UV radiation and they look like crap. The color is terrible. You cannot beat a nice blackbody radiator.


If you pauperism to save energy replace bulbs with 40 or 60 watt ones, really, it's not that dim, and regard motion sensors on hardly used outdoor lights.
Don't em when you don't need them.
My dad leaves the lights on in the daytime, and it just makes the room 10% brighter.

What is the composition of the white powdery substance inside most incandescent lightbulbs?

Jan 23, 2006 by Methlehem | Posted in Other - Science

I be that argon and nitrogen are released once the tungsten inside the bulbs works are "ignited," I'm fair curious about the compostion of the white powdery substance (some bulbs have it, and others don't) inside the bulb. It isn't phosphor is it?
Hmm, there has to be a charted somewhere that describes the content of that particular substance. Does anyone know of the patent number for this item?
I'm still looking for a gambler answer, and am thinking about re-posting the question as the answer I received to it originally had absolutely nothing to do with what I asked...

Most today's incandescent lamps are filled with a mixture of argon or krypton and a small amount of nitrogen.