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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Light Bulb
How many posters in this Newsgroup does it take to change a lightbulb?
1 to change the light bulb and to post that the light bulb has been changed. 12 to share similar experiences of changing light bulbs and how the light bulb could have been changed differently. 9 to caution about the dangers of changing light bulbs. 6 to point out spelling/grammar errors in posts about changing light bulbs. 4 to flame the spell checkers. 3 to correct spelling/grammar flames. 1 and we all know which one, to complain about top-posting. 6 to argue over whether it's "lightbulb" or "light bulb" ... another 6 to condemn those 6 as anal-retentive. 3 industry professionals to inform the group that the proper term is "lamp". 8 know-it-alls who claim they were in the industry, and that "light bulb" is perfectly correct. 17 to post that this News Group is not about light bulbs and to please take this discussion to a lightbulb forum. 13 to defend the posting to this group saying that we all use light bulbs and therefore the posts are relevant to this NG. 25 to debate which method of changing light bulbs is superior, where to buy the best light bulbs, what brand of light bulbs work best for this technique and what brands are faulty. 6 to post URL's where one can see examples of different light bulbs. 3 to post that the URL's were posted incorrectly and then post the corrected URL's. 5 to post about links they found from the URL's that are relevant to this group which makes light bulbs relevant to this group. 11 to link all posts to date, quote them in their entirety including all headers and signatures, and add "Me too". 3 to cross-post replies to twelve other News Groups. 4 to post to the group that they will no longer post because they cannot handle the light bulb controversy. 5 to say "didn't we go through this already a short time ago?". 1 infrequent visitor to the group to respond to the original post 6 months from now and start it all over again. Argh! |
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Phil wrote:
How many posters in this Newsgroup does it take to change a lightbulb? Talking of light bulbs, it seems extraordinary that they never say how much light they give out, but only how much power they consume. As their purpose is presumably to give out light, it would seem more logical to say how much it provides. I can't imagine a butcher telling you how much power you need to cook a joint, rather than how much it weighs. -- Timothy Murphy e-mail (80k only): tim /at/ birdsnest.maths.tcd.ie tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland |
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On 21 Mar 2005 05:43:30 -0800, Phil wrote:
How many posters in this Newsgroup does it take to change a lightbulb? Yawn........... -- the dot wanderer at tesco dot net |
#4
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In article .com,
Phil wrote: How many posters in this Newsgroup does it take to change a lightbulb? ... and one to point out that if you have a fitting with two bulbs you are much less likely to be left in the dark ... and another two point out that if you do this, you'll be changing bulbs twice as often g -- Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk Free SEDBUK boiler database browser http://www.sda.co.uk/qsedbuk.htm |
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Phil wrote:
How many posters in this Newsgroup does it take to bore everyone senseless? Just one or two a week. Si |
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In article ,
Tony Bryer wrote: How many posters in this Newsgroup does it take to change a lightbulb? .. and one to point out that if you have a fitting with two bulbs you are much less likely to be left in the dark A win win situation... .. and another two point out that if you do this, you'll be changing bulbs twice as often g No disadvantages allowed to be mentioned. -- *Why doesn't glue stick to the inside of the bottle? Dave Plowman London SW To e-mail, change noise into sound. |
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"Mungo \"two sheds\" Toadfoot" wrote in
: Just one or two a week. Si You're lucky, I get loads more than that mike |
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"Phil" wrote in message oups.com... How many posters in this Newsgroup does it take to change a lightbulb? 1 to change the light bulb and to post that the light bulb has been changed. 12 to share similar experiences of changing light bulbs and how the light bulb could have been changed differently. 9 to caution about the dangers of changing light bulbs. 6 to point out spelling/grammar errors in posts about changing light bulbs. 4 to flame the spell checkers. 3 to correct spelling/grammar flames. 1 and we all know which one, to complain about top-posting. 6 to argue over whether it's "lightbulb" or "light bulb" ... another 6 to condemn those 6 as anal-retentive. 3 industry professionals to inform the group that the proper term is "lamp". 8 know-it-alls who claim they were in the industry, and that "light bulb" is perfectly correct. 17 to post that this News Group is not about light bulbs and to please take this discussion to a lightbulb forum. 13 to defend the posting to this group saying that we all use light bulbs and therefore the posts are relevant to this NG. 25 to debate which method of changing light bulbs is superior, where to buy the best light bulbs, what brand of light bulbs work best for this technique and what brands are faulty. 6 to post URL's where one can see examples of different light bulbs. 3 to post that the URL's were posted incorrectly and then post the corrected URL's. 5 to post about links they found from the URL's that are relevant to this group which makes light bulbs relevant to this group. 11 to link all posts to date, quote them in their entirety including all headers and signatures, and add "Me too". 3 to cross-post replies to twelve other News Groups. 4 to post to the group that they will no longer post because they cannot handle the light bulb controversy. 5 to say "didn't we go through this already a short time ago?". 1 infrequent visitor to the group to respond to the original post 6 months from now and start it all over again. Argh! You forgot about me! I say you should get a pro in to do it. Arthur |
#9
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Tony Bryer wrote:
In article .com, Phil wrote: How many posters in this Newsgroup does it take to change a lightbulb? .. and one to point out that if you have a fitting with two bulbs you are much less likely to be left in the dark .. and another two point out that if you do this, you'll be changing bulbs twice as often g And another one called NT to point out this isnt a problem if your lights are made accessible in the first place, and you keep the variety of bulbs you use to sensible numbers and sensible prices, and you overlap the lighting areas so that with one fitting out you still have at least some light there. And to point out that if you use a switchbank you also get 3 brightness levels, saving energy and making the place more comfortable in the evening. And to explain this was common practice in the 20s & 30s when electricity was seriously expensive, ie it is a well proven energy saving method. Having used such an ancient installation, and ahving used this method in modern days, I can say its a thoroughly good idea. NT |
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Timothy Murphy wrote:
Phil wrote: How many posters in this Newsgroup does it take to change a lightbulb? Talking of light bulbs, it seems extraordinary that they never say how much light they give out, but only how much power they consume. Look on the side of the packets. There is often a number "1000 lumens" for example. 100lm/W is excellent, for the best fluorescants, 180lm/W is typically only achievable with yellow sodium monochromatic low-pressure lights, 15lm/W or so is fairly typical for your average tungsten light bulb, and CF lights can be around 50-60lm/W. |
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Ian Stirling wrote:
Talking of light bulbs, it seems extraordinary that they never say how much light they give out, but only how much power they consume. Look on the side of the packets. There is often a number "1000 lumens" for example. 100lm/W is excellent, for the best fluorescants, 180lm/W is typically only achievable with yellow sodium monochromatic low-pressure lights, 15lm/W or so is fairly typical for your average tungsten light bulb, and CF lights can be around 50-60lm/W. Thanks very much, I see that about half of my rather large store of light bulbs have a lumen measure on them. Tesco are just selling sets of 3 11 watt energy-saving bulbs very cheaply, and these claim to give 600 lumen, while a "soft tone" Phillips 60 watt bulb specifies 710 lumen, which seems a little low by your measure. Since I am in the presence of such luminous knowledge, why does one never see very bright energy-saving bulbs - I mean the equivalent of a 150 or 200 watt standard bulb? -- Timothy Murphy e-mail (80k only): tim /at/ birdsnest.maths.tcd.ie tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland |
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In article ,
Timothy Murphy wrote: Since I am in the presence of such luminous knowledge, why does one never see very bright energy-saving bulbs - I mean the equivalent of a 150 or 200 watt standard bulb? You can get very bright 'per square inch' fluorescents - we use them in filming - but the tubes, and possibly control gear, are very pricey. -- *Don't sweat the petty things and don't pet the sweaty things. Dave Plowman London SW To e-mail, change noise into sound. |
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Timothy Murphy wrote:
Tesco are just selling sets of 3 11 watt energy-saving bulbs very cheaply, and these claim to give 600 lumen, while a "soft tone" Phillips 60 watt bulb specifies 710 lumen, which seems a little low by your measure. Soft tone is less efficient than pearl - the more diffusing the glass the more light it absorbs, and also the slight tint of soft tone is caused by absorption of light. Opal is worse than pearl but better than coloured soft tone, clear is more efficient than any of the others (but of limited use of course). All this assumes that you have the same filament, gas fill etc. -- Spamtrap in use To email replace 127.0.0.1 with blueyonder dot co dot uk |
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Timothy Murphy wrote:
Tesco are just selling sets of 3 11 watt energy-saving bulbs very cheaply, and these claim to give 600 lumen, while a "soft tone" Phillips 60 watt bulb specifies 710 lumen, which seems a little low by your measure. check the lifetime rating of those, dont bother if theyre the 1200 hr ones. Since I am in the presence of such luminous knowledge, why does one never see very bright energy-saving bulbs - I mean the equivalent of a 150 or 200 watt standard bulb? Questionable British regulations forbid loads of 50w with no waveform correction, which is too expensive, so people just use 150/200 filaments instead. A daft situation. NT |
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In article ,
Timothy Murphy wrote: Since I am in the presence of such luminous knowledge, why does one never see very bright energy-saving bulbs - I mean the equivalent of a 150 or 200 watt standard bulb? Because they turn out to be rather unreliable. They are available in the US, but the tube cooks the control gear leading to early control gear failures, and they are usually restricted to being operated base down in open luminares, making them unsuitable for many applications. The highest power rating I've seen in the shops in UK is a Philips 30W one with ES lampbase at Homebase, which is probably 120W equivalent. You can find some higher rated ones by searching mail order specialists. At the moment, for higher power ratings, you are better off with a lamp with separate (remoted) control gear so the heat from the tube doesn't cook it. -- Andrew Gabriel |
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On Mon, 21 Mar 2005 23:46:28 +0000 (UTC), "Arthur"
wrote: "Phil" wrote in message roups.com... How many posters in this Newsgroup does it take to change a lightbulb? [mega-snip] You forgot about me! I say you should get a pro in to do it. And John Prescott, who is going to make you. -- On-line canal route planner: http://www.canalplan.org.uk (Waterways World site of the month, April 2001) |
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Chris Hodges wrote:
Timothy Murphy wrote: Tesco are just selling sets of 3 11 watt energy-saving bulbs very cheaply, and these claim to give 600 lumen, while a "soft tone" Phillips 60 watt bulb specifies 710 lumen, which seems a little low by your measure. Soft tone is less efficient than pearl - the more diffusing the glass the more light it absorbs, and also the slight tint of soft tone is caused by absorption of light. Opal is worse than pearl but better than coloured soft tone, clear is more efficient than any of the others (but of limited use of course). limited use? I wish I could get them more easily. Theyre just as good for light fittings where the bare bulb isnt visible, and look much better in some types of light. NT |
#19
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