greenalien Posted October 5, 2007 Share Posted October 5, 2007 I think you will find that if demand goes down so does the price This is only true up to a point; in most cases, the price of mineral-related items are kept down because of the enormous quantities that are extracted. Once demand falls off, after the 'fire sale' period to get rid of existing stocks, the 'economy of scale' factor no longer applies; large-scale production becomes uneconomic so producers dry up and the commodity becomes a specialised item - and then the price goes up. If the marketplace won't pay the increased production cost, the product ceases to be available. What I don't know is what proportion of the planet's tungsten production is used for domestic lamp manufacture, or if the same tungsten filament production facilities are used for both domestic and industrial lamps. If, as I suspect, industrial lamp production is effectively subsidised by domestic lamp production then it seems inevitable that the ending of domestic filament lamp production will result in a significant price increase for industrial filament lamps. Link to comment Share on other sites More sharing options...
Guest lightnix Posted January 4, 2008 Share Posted January 4, 2008 Just a wee bumpette to add this link to the thread. It's American, but a good indication of the way things are going IMO; note that it also mentions certain ballasts. Link to comment Share on other sites More sharing options...
dbuckley Posted January 4, 2008 Share Posted January 4, 2008 'Tis interesting that this white paper specifically addresses "general service incandescent" lamps, which are defined as having a "medium screw base". As there are virtually no theatre lamps with that kind of base, they will not be included in the definition, and thus escape. Ok, really old floods, but they should have been binned years ago anyway. The metal halide section is far more interesting, there are lots of theatrical fixtures with metal halide lamps in the 150W - 500W bracket... Link to comment Share on other sites More sharing options...
Johnno Posted January 4, 2008 Share Posted January 4, 2008 Ok, really old floods, but they should have been binned years ago anyway. Our school has 37 of these in a total lighting stock of 55 units. Link to comment Share on other sites More sharing options...
dbuckley Posted January 4, 2008 Share Posted January 4, 2008 In the UK a similar enactment of those regs would target bayonet cap lamps, so your patt 60s are safe for a few decades yet... Link to comment Share on other sites More sharing options...
peternewman Posted January 5, 2008 Share Posted January 5, 2008 I wonder if it would need to cover both, or Ikea's business may increase as I believe most of their fixtures have ES. Although in fairness to Ikea, they do sell lots of energy saving lamps. Link to comment Share on other sites More sharing options...
Guest lightnix Posted January 7, 2009 Share Posted January 7, 2009 Another year, another bump... :** laughs out loud **: Britons panic buying last stocks of conventional lightbulbs Britain has signed up to an European Union decision to replace conventional 100-watt bulbs with supposedly greener, low-energy alternatives. It means that the staple household item is vanishing from the high street after 120 years. Leading supermarkets and DIY chains, including Sainsbury's, Asda and Homebase, have already sold all their final stocks of the bulbs. Other stores have reported that the only have enough to last until the end of next week...Full story here (Telegraph) See also...Lights out: The end of tungsten (Independent)It's lights out for the light bulb (Times) Hmmm... maybe I should panic buy a few 60 watters for our last remaining, non-CFL fitting in the bathroom :blink: Link to comment Share on other sites More sharing options...
Simon Lewis Posted January 7, 2009 Share Posted January 7, 2009 More EU based energy efficiency stuff here... Moves to deal with power wasted in standby mode here... Gratuitous picture of tree huggers: http://www.treehuggersofamerica.org/images/tree_hugger.jpg Link to comment Share on other sites More sharing options...
Bryson Posted January 7, 2009 Share Posted January 7, 2009 I'm finding the knock-on of this type of legislation (we have something similar) is not to do with the theatre lights as such, but the mirror lights in the dressing rooms are proving troublesome to replace. It's a real pain, actually. I guess I'm going to have to come up with a solution, but I'm not so sure what that solution will be. Any clever ideas? Link to comment Share on other sites More sharing options...
sleah Posted January 7, 2009 Share Posted January 7, 2009 I'm finding the knock-on of this type of legislation (we have something similar) is not to do with the theatre lights as such, but the mirror lights in the dressing rooms are proving troublesome to replace. It's a real pain, actually. I guess I'm going to have to come up with a solution, but I'm not so sure what that solution will be. Any clever ideas? No nothing about dressing rooms, make-up and the like, this may sound dumb:What's the problem? Aren't the lamps just your bog-standard BC (wattage of choice) domestic lamp?Can't you just replace with an equivalent CFL? Is it to do with colour temp etc?I can't see start up being a problem, just switch 'em on 5mins early and leave for the duration of the show? Just curious really, like I say I know naff-all about them so please feel free to put me right on the subject! Link to comment Share on other sites More sharing options...
Bryson Posted January 7, 2009 Share Posted January 7, 2009 They are bog-standard ES (I'm left-pond) lamps - 25w, big globes. Hence the problem - there's no problem getting specialist lamps, but these are so "normal" they are proving difficult to find in non fluorescent versions. The issue is that they are for applying make-up - so compact fluorescent does not have the same colour temp or continuous spectra that's needed for then going onstage in tungsten light. ie: the light that make-up is applied under should be the same light that it is designed to be viewed under. Link to comment Share on other sites More sharing options...
sleah Posted January 7, 2009 Share Posted January 7, 2009 They are bog-standard ES (I'm left-pond) lamps - 25w, big globes. Hence the problem - there's no problem getting specialist lamps, but these are so "normal" they are proving difficult to find in non fluorescent versions. The issue is that they are for applying make-up - so compact fluorescent does not have the same colour temp or continuous spectra that's needed for then going onstage in tungsten light. ie: the light that make-up is applied under should be the same light that it is designed to be viewed under. Ah yes, the pond :D In the UK I've seen the globes readily available in DIY stores as CFL, but I did think the colour temp may be the issue.Could someone invent a glass paint or lamp condom that corrects CFL to tungsten that's cheap!! ;) Good luck on your quest to find a solution. Link to comment Share on other sites More sharing options...
charlyfarly Posted January 7, 2009 Share Posted January 7, 2009 The issue is that they are for applying make-up - so compact fluorescent does not have the same colour temp or continuous spectra that's needed for then going onstage in tungsten light. ie: the light that make-up is applied under should be the same light that it is designed to be viewed under.Yes that is 100% correct. Even when applying make-up in a domestic situation under fluorescent lights produces disastrous results and "weird" shadows. Absolutely hopeless unless you are doing Horror makeup (which is what mine ends up looking like!) ;) Link to comment Share on other sites More sharing options...
Simon Lewis Posted January 7, 2009 Share Posted January 7, 2009 Could someone invent a glass paint or lamp condom that corrects CFL to tungsten that's cheap!! ;) Not really - that's what differentiates a continuous spectrum source from a non continuous one. Various discharge lamps will use a variety of chemicals to provide additional spectral lines, and they are quite good - but still not a continuous spectrum or same colour temperature as incandescent tungsten. Link to comment Share on other sites More sharing options...
Andrew C Posted January 7, 2009 Share Posted January 7, 2009 A chore no doubt, but I wonder how viable a conversion to halogen capsules in some sort of opal fitting would be? With more time I might look into it. A possible advantage would be the reduction to 12v from an H&S aspect. We have discussed numpties sticking their fingers into BC mirror lights here in the past... Link to comment Share on other sites More sharing options...
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