Talk:Electric light

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"Microwave pumped"[edit]

Moved from list of Electric light technologies in that article:

  • microwave pumped [?]

(Some lasers are pumped with electromagnetic radiation, and there are blue-sky proposals for beaming microwaves as a means of power distribution. This could have something to do with either of those.)

The line went from

Microwave pumped

to the form above in its first year, and has seen no further change in over 9 months. Moving it here does no harm, since it conveys no information and since it is not about a currently practical technology; it helps by dispelling both confusion, and readers' anxiety that they may be ignorant.

If someone wants to write or find even a stub article on the subject, that would give it some context, the line may be the start of something deserving space in the article. --Jerzy 23:11, 2003 Dec 9 (UTC)


Whatever is this supposed to mean?[edit]

"The total amount of artificial light is sufficient for cities to be easily visible at night from the air, and from space. This wasted light should not be confused with the light pollution that burdens astronomers and others, although it is the source of it." It is the cause of light pollution — so how can it be further confused with it? Njál 19:59, 10 December 2006 (UTC)

Efficiency[edit]

It took me quite some time to find what it means to have higher than 100% efficiency in the table, should there be more information about that in this article or at least linked to the correct portion of the efficiency article so it is easier to understand? MythSearchertalk 06:22, 19 March 2009 (UTC)

Consensus building[edit]

Did only ONE editor find the article title ambiguous? Usually we discuss moves. --Wtshymanski (talk) 15:48, 25 April 2010 (UTC) One song by a rock band, and one poetry collection, needs disambiguation? forsooth. --Wtshymanski (talk) 15:49, 25 April 2010 (UTC)

Yeah, looks like this was a good-faith move to make room for a page (Electric Light (poetry)) created by the mover a day or so ago. I propose we move the current Electric light to Electric light (disambiguation) and move the obviously primary topic back, with a hatnote to the disambig. (It may also be worth pointing this redirect to the new disambig page, since there are now two Electric capital-L Light articles.) --JaGatalk 15:34, 26 April 2010 (UTC)

No history?[edit]

Are you kidding? No History section on the article on Electric Light? I know there's one on the article on the lightbulb, but cmon. Gaiacarra (talk) 16:28, 5 November 2011 (UTC)

Lamp life expectancy[edit]

It is a complete myth that the life of a filament lamp is shortened due to frequent power cycling. Contrast the compact fluoresent lamp where the 10,000 hour life assumes the lamp is operated under laboratory conditions. Frequent switching vastly shortens the life, often to less than the 1000 hour life of the filament bulb it usually replaces. 86.156.154.237 (talk) 16:54, 24 August 2012 (UTC)

When the filament is cold, its resistance is lower, therefore a higher flows through it (until it has heated up to normal operating temperature). So during that brief moment, the power and therefore the stress on the filament is higher. That in turn makes premature failure more likely. Noggo (talk) 17:34, 7 November 2013 (UTC)
But the filament never gets hotter than it does when at its operating temperature. Lots of filament bulbs are used in applications where they flash and their lives are no shorter than similar bulbs that do not flash. An obvious pair of applications is the flashing indicators and the brake light of a car (often the same type of bulb). The flashing indicator bulbs seldom have a shorter life than the brake light and will often outlast them. DieSwartzPunkt (talk) 18:40, 4 November 2014 (UTC)
What do the sources say? --Wtshymanski (talk) 14:45, 5 November 2014 (UTC)
If someone wants to claim that flashing lamps shorten their life, then a source is exactly what is required. As it is uncited, someone has tagged the claim as dubious for discussion here (and indeed kicked off the discussion - but failed to link it back to the tag). You had no right to remove the tag without providing a supporting reference (per WP:BURDEN).
Also: my apologies - I had not noticed that I had also reverted a constructive edit. DieSwartzPunkt (talk) 17:42, 5 November 2014 (UTC)
If you were blushing about that sort of thing, you'd have permanently burst facial capillaries. Kane and Sell in the book "Revolution in Lamps: 50 Years of Progress" say on Page 14 that incandescent lamps often fail at switch on because of high inrush current not allowing the temperature of the filament to equalize - if the hot spot temperature overshoots and hits the melting point of tungsten, the filament fails. --Wtshymanski (talk) 20:10, 6 November 2014 (UTC)
The problem is that the claim, by implication, is being used to support other claims in the rest of the paragraph which at one point states, "Rooms with frequent switching (bathroom, bedrooms, etc.) can expect much shorter lamp life than what is printed on the box." Whilst I agree that the most likely time for a lamp to fail is when it is switched on, that premise alone does not support other claims made in the paragraph and there is still no evidence that frequent switching significantly shortens the lamp life. DieSwartzPunkt (talk) 14:04, 7 November 2014 (UTC)

──────────────────────────────────────────────────────────────────────────────────────────────────── @Wtshymanski: On rethinking your above post: It is right and proper that Wikipedia has as many references to support articles as possible. It therefore occurs to me, that you should add your reference above in place of the {{dubious}} tag in its current location. However, as the rest of the paragraph is still in contention then, unless your reference specifically addresses the points, the {{dubious}} tag should be reinstated against the claims that are still unreferenced - and which this discussion is really addressing. DieSwartzPunkt (talk) 12:34, 9 November 2014 (UTC)

Bulb shapes?[edit]

I don't see any pages that enumerate the variety of standard bulb shapes/form-factors. Outside of Wikipedia, other web resources are confusing. In other words as a new home-owner, I've been left scratching my head about the difference between a PAR and a BR and an R. There are pages like this but a lack of photos and of dimensions and spelled-out acronyms make them useless in exactly identifying a bulb. Where should such info go? This page? A new page? Related pages include A-series light bulb, which is limited in scope, and Parabolic aluminized reflector light, which is restricted to theater lighting. Also: Multifaceted reflector.

If I can't find a high-level page for this topic, I'll Be Bold. It's been years since I created a new page, much less on a non-esoteric topic. —Ben FrantzDale (talk) 12:37, 8 October 2015 (UTC)

I think you want Incandescent light bulb#Bulb shapes.--Srleffler (talk) 00:48, 9 October 2015 (UTC)

sensitivity to fluorescent lights[edit]

This should be mentioned on the page. Some people are sensitive to the high-speed flicker of fluorescent lights, which most of us don't notice, and can be subject to seizures brought on by them. I know at least one such person, and they are seriously concerned over the legislated and economically pushed phasing-out of incandescent lights in favor of compact or traditional fluorescents. --Thnidu (talk) 03:05, 19 July 2016 (UTC) Thnidu (talk) 03:05, 19 July 2016 (UTC)

A reference to a reliable source would be needed; personal anecdotes are not sufficient. --Srleffler (talk) 05:50, 19 July 2016 (UTC)