Do you get a free set of night vision binoculars with every cwt. of LED lamps ?
My postcode is LS27 7QZ. Since they are commercially available perhaps you could indicate the nearest showroom where I can see an "entire house" lit by such lights.
I'll be there with my light meter.
Derek
They do. They are pretty much the same as CFLs in that if you replace them when they go dim you are throwing away half their life.
The halogen ones are visibly brighter than the ordinary ones even at the reduced power. This may be because they are more blue and may not actually emit more light, I have not measured one.
cite, please
You obviously have no idea whatsoever of what is available today.
Did I even imply that such a house existed?
Please feel free to set up a test and do so. Perhaps use 3 X 5W LED fittings in a test rig and compare with a single 15W incandescent in its place.
20X5W LED fittings will light a room *considerably* brighter than a 100W incandecent, and you will seldom want them all on at once.
Thats one of Dennis's specialities, that is,
oh, ... and just plain being wrong
On Fri, 28 Aug 2009 20:30:31 +0100, Cynic wrote the following to uk.misc:
Bit tricky to get your shopping back from the supermarket in though.
mh.
Now you have done it, a direct reasoned attack on the common, but erroneous, belief that buses, trains, etc are better (regarding pollution) than cars and planes. There was one guy on the radio that claimed barges were better as they only used a gallon an hour, but they do only do three miles per hour.
Aren't LEDs really good at being dimmed anyway? (with appropriate drivers). Better than switching some off, surely?
In message , Cynic writes
Dunno if they're, DLP or not, but standing on the presenter side of some projectors I definitely see a similar strobe effect (IIRC I see an R, a G and a B image, BICBW)
The ship figure is from a cruise ship. More interesting would be to see what a ferry uses.
I would expect a ferry to have more drag but they may cram in more passengers. Basically It depends on how you schedule the service. You can make buses very efficient if you run them full, however people already complain that they only get one bus a week.
What about those lights on roundabouts that are only in use at certain times of day?
Dave
You have to slow down to see if its ok.
And less energy spent on heating, lighting, etc.
Ships are also generally cargo-shifters, not people shifters, so need to factor that in too. Not easy, is it?
Perhaps he meant HORSE-drawn?
but also totally irrelevant.
In message , "dennis@home" writes
Surely Dennis, the only way you could go any slower would be to put it in reverse
Just wave a hand around in front of it.
You mean irrelevant in a manner that means that a trivial passenger/mile figure hides the rather more important stuff behind it? Right...
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.