The instantaneous light-intensity function of a fluorescent lamp

Gluskin, E; Topalis, FV; Kateri, I; Bisketzis, N

dc.contributor.author	Gluskin, E	en
dc.contributor.author	Topalis, FV	en
dc.contributor.author	Kateri, I	en
dc.contributor.author	Bisketzis, N	en
dc.date.accessioned	2014-03-01T01:25:16Z
dc.date.available	2014-03-01T01:25:16Z
dc.date.issued	2006	en
dc.identifier.issn	0375-9601	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17623
dc.subject	Light Intensity	en
dc.subject	Power Function	en
dc.subject	Low Pressure	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.title	The instantaneous light-intensity function of a fluorescent lamp	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.physleta.2006.03.022	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.physleta.2006.03.022	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Using some simple physics and "system" considerations, the instantaneous light intensity function psi(t) of a fluorescent lamp fed via a regular ballast from the 50-60 Hz line is argued to be psi(t) = psi min + bp(t), where p(t) is the instantaneous power function of the lamp, and h is a constant, and experiment confirms this formula well. The main frequency of psi(t), the very significant singularity of its waveform, and the relative intensity of the ripple, i.e., the depth of the modulation, are the focus. The results are important for research into the vision problem that some humans (autistic, but others, too) experience regarding fluorescent light. The inertia of the processes in the lamp which are responsible for the light emission, provides some nonzero emission at the instants when p(t) has zeros. The smaller the volume of the tube and the mass of the gas are, the more weakly the inertia of the processes is expressed, and the relatively smaller is psi(min). However, it should be very difficult to theoretically obtain psi(t), in particular psi(min), from the very complicated physics of the low-pressure discharge in the tube. We conclude that psi(min) has to be connected with the (also easily measured) lamp's inductance. The work should attract more attention of the physicists to the properties of the common fluorescent lamps. (c) 2006 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Physics Letters, Section A: General, Atomic and Solid State Physics	en
dc.identifier.doi	10.1016/j.physleta.2006.03.022	en
dc.identifier.isi	ISI:000237399500001	en
dc.identifier.volume	353	en
dc.identifier.issue	5	en
dc.identifier.spage	355	en
dc.identifier.epage	363	en