I have light-sensitive eyes, too, as well as light spectrum sensitive. I wear dark glasses in sunlight and sometimes on cloudy days, too. Whether there's a connection between those hadn't occurred to me. Interesting question.
IT is fine for some folks to prefer the cave-like dim glow, but please don't assume that everybody likes that effect. I have always liked the more frosty white type of light because it allows for seeing things, especially details, much more clearly. The biggest problem that I see right now with LED lighting is the incorrect assumption that everybody likes and must have that yellowish cast light, and that nobody would ever like the frosty white illumination.
But fads come and go and in a while there will be a different shade of light in favor. That is the way things change, and the way that they have been for quite a while.
The other thingthat I see is that for quite a few general illumination applications tere is really no need to make all of the lights exactly the same color spectrum. So there would be a real market for those devices that did not fit into the very narrow bins that seem to be keeping the price of devices higher than they really need to be. How about offering us a line of lights that have a braoder spread of colors, and aloso a lower price. It could be a benefit to a lot of us.
Yes, for sure, I'd like to know as well. For me, I have been tested to have very light-sensitive eyes in general (I've been a contact lense wearer for 30 years, though I'm not sure that has anything to do with it). I'm not sure if light sensitivity has anything to do with light-spectrum sensitivity in particular, though. Perhaps a Google search is in order! Will report back any pertinent findings...
It's funny, LEDs don't bug me nearly as much. Greenish CFL light makes people look like zombies and I actually find it depressing and/or nauseating. But warm colors are a lot better--that's part of what makes natural spectrum bulbs so efficient in raising mood and lowering blood pressure for some of us.The problem I have with LEDs is they're so harsh--they give me eyestrain pretty quickly.
The history lesson I was referring to was the unit of millions, not a thousand, years: just a few orders of magnitude, that's all! Re what makes some of us more sensitive to colored light than others, I don't know and I'm not sure it's been looked into. There are many variations like that among humans that haven't been studied much. If anyone does know about this one, I'm interested in learning.
Indeed, Ann, a bit of a history lesson is necessary...I guess I never thought about why many humans are so adverse to harsh light but it certainly makes sense! Not to mention the associations with bright white lighting (hospitals, as mentioned, and to me they also remind me of unpleasant days in a school room!). What is it exactly that makes some of us sensitive to light color and others not so much, do you know?
This is potential good news for those of us who are sensitive to light color--not everyone is, it turns out. Those greenish CFLs make everyone look like zombies to me, and harsh LEDs give me a headache. But NXP's Surdeanu needs a history lesson: we're used to the warm light of the sun and firelight after a few million--not a thousand--years. And that's what natural spectrum lights are all about--they emphasize the reds we're wired for.
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For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.