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- Path: sparky!uunet!cs.utexas.edu!rutgers!ub!toz!cyberman
- From: cyberman@toz.buffalo.ny.us (Cyberman)
- Newsgroups: sci.electronics
- Subject: Re: flouresent lighting
- Message-ID: <gate.eiigsB1w165w@toz.buffalo.ny.us>
- Date: 11 Oct 92 01:40:37 GMT
- Lines: 31
- X-Maildoor: WaflineMail 1.00r
-
-
- Jason Goga was espousing about 'flouresent lighting',
- on [10-08-92 21:11] to All!
- JG> In chemistry class the teacher was illustrating flouresent lighting,
- JG> and explained that the charge caused the electrons to leap into higher
- JG> energy levels, however not being able to sustain them they would fall
- JG> back down realeasing energy as light. Now I was curious, I've never
- JG> seen a flouresent light run from DC. so is it the constant returning
- JG> to 0 volts that causes the electrons to fall back down or do they do
- JG> so on their own accord?
-
- A flouresent lamp works this way:
-
- A photon of UV wavelength stirkes the phosphorescent
- coating on the tube (white stuff) the phosphor is
- exciting to a higher state and then not being able to
- maintain it losses a specific amount of energy and
- returns to it's ground state. This produces a different
- wavelength of light WHICH in fact is ussually lower.
-
- The UV light is produced by a low preasure gas inside the
- tube (I can't remember what they use). You can run a
- fourescent of of high voltage DC. AC is used because
- it's relatively common.
-
- Stephen Cyberman@Toz.Buffalo.NY.US
- Scripted at Sat 10-10-1992 16:06:22
-
- ... No sense being pessimistic. It wouldn't work anyway.
- --- Blue Wave/QWK v2.10
-
-