Re: Why PL fluorescent fixtures gets dirty with carbon « Reply #1 on: October 30, 2020, 12:14:04 PM » Author: Medved
It is the normal mess flying in the air all the time, the fixture is just attracting and collecting it. It is not carbon, but decomposed matter from clothing, maybe construction materials, maybe some grease from kitchen,... All distributed around the house by the heating air ducting (if you are using hot air central heating).
		Logged

No more selfballasted c***

	Re: Why PL fluorescent fixtures gets dirty with carbon « Reply #3 on: December 05, 2020, 02:18:11 AM » Author: WorldwideHIDCollectorUSA
From my imagination, insects often get attracted to these fixtures and often end up on the lowermost part of the shade when they die.
		Logged

Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: Why PL fluorescent fixtures gets dirty with carbon « Reply #4 on: December 07, 2020, 03:02:21 AM » Author: Medved
Quote from: Binarix128 on December 04, 2020, 10:00:02 PM Is it caused by the UV light, heat or both? I've seen the Sam carbonization effect with CFLs, but not with incandescents which run hotter.  The heat of the incandescents makes the grease from the dirt to evaporate before it touches the bulb, so the residue is then less sticky. Plus the air moves there faster, so it blows tge dry residues away. With fluorescents maybe tye bare tube is able to evaporate the grease, but the reflector is colder so it condenses back there.
		Logged

No more selfballasted c***