Pop into Poundland and buy a dozen of their circular camping 20x LED lights, each use 4 AA cells During a recent power outage i use 4 of them to light my living room.
Nowhere near enough light for everyday use, but I'm sure a dozen of them mounted on the ceiling would be.
It's your choice. I *think* that switching off some of the lights would be slightly more energy efficient than dimming, and it also allows you to light only the parts of the room that you need to light.
I don't see any numbers there relating to spacecraft and pm per gallon. I don't see any information there, either, that can convert the solid rocket fuel into a 'gallon of fuel' equivalent. Perhaps I am being short sighted.
Yeah, sorry, forgot to pick up on that. You need, really, to consider like for like jobs as well. A ferry is closer to the function of a plane or a train or a car than a cruise ship, carrying accomodation and entertainment with it, is.
You are. A spacecraft can travel forever at millions of miles per hour on no fuel whatsoever. Therefore it must be *potentially* the most fuel efficient method of transport. I chucked it in my post as a semi-humerous observation, but with the serious point that such comparisons are not always a valid way of looking at things.
However *my* question was a genuine one and was intended to be taken seriously.
Why? If you do so in the context of having explained that vested interest. This is usenet after all, bias is tolerated and indeed expected!
My reason for asking, was that inspite of much hype, much (if not all) of the general purpose LED lighting I have seen so far, I not been that impressed with. Often exhibiting low overall brightness levels (but very high directionality), poor colour rendition, and often poor reliability. If there is stuff being made now, or coming on stream soon that is better than what I have experienced so far then it would be nice to know.
Vos Pad was an early complete interior that , personally not entirely sure worked
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too have commercial vested interest in LED lighting, here`s one that had no involvement in, but its accessible and demonstrates how LED lighting can work,Fountain Court, Somerset House, London
With great respect, dimming is an essential part of , any modern, interior lighting design.
The great advantage of LED lighting is the ability to exploit putting light exactly where it is required even with the fittings and furniture of the space.
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