That would be a good indicator for noise pollution. LED Head

I think this concept of having a light meter according to noise was suggested much earlier in the competition. I still believe that red should be used for intimate and green-blue for high excitement parties... Perhaps if you go over the top with the noise the colours could cycle or flash between each other like a light show. howman

Thanks howman. I like your suggestion about the colors cycle or flash when the sound level goes over the top. As for the color indication, I think I would like to see a green-blu tone instead of red when I am about to sleep or listening to light music / reading books, the red/orange are just too stimulated for this atmostsphere. ronald830

Thanks LED head. Yes, we can know when to stop making noise in a party before the police come. :) ronald830

If you look at the wavelengths of light you will notice that red has a very long wavelength compared to blue and although it is still a very high frequency, the difference is, as you know, visually noticeable, and therefor reacted to. So a longer wavelength is more relaxing than a short one... Why do you think so many people have red light bulbs in their bedrooms... ;) Try it out... Red is easier on the eyes in a dark room. howman

Could work well with the restaurant thought from phase I - e.g. a table where a couple is having a romantic dinner and thereby talks calmly or even whispers should have a nice yet darker light tone while a table with more people, laughs and active conversations requires more brightness - or even relaxing light when they get too loud :) diplomod

howan, thanks for you input again. But please take a look at this website http://freshome.com/2007/04/17/room-color-and-how-it-affects-your-mood/ is a guide to choose color for our room. The explanations in there and yours are opposite. And also this one http://www.chiroweb.com/mpacms/dc/article.php?id=41361 They said green and blue are more relaxing. But anyways, maybe different people has different influrence of light color. Should we start a poll here to determine which color configuration is better ? I really want to know more :) ronald830

Thanks for your input diplomod. That\'s a very good idea to have it in a restaurant. As you see the light color on the table, you can tell which table has what mood ! ronald830

What you have to remember as well is that although a colour may be relaxing for a time, it can cause side effects... take the bubble gum pink colour. Studies have shown that it is very relaxing for a short period of time, like a few hours, but people subjected to a room that colour for extended periods started to show psychotic behaviour. I believe the same was shown for the colour used in the children\'s animal Barney... Children overwhelmingly love the colour, but adults don\'t... So, although I agree that a painted room in green would promote well being, you also have to take into account that paint is a reflective colour and only shows a colour due to it absorbing the other wavelengths of the light and only reflecting the one hue... a light is a different story as a radiant emission of photons that in themselves have an effect. There are also studies that show people who are inebriated are drawn to the colour red... Now they are already relaxed. I am sure we could find studies both ways all day long. The only thing to do would be to agree that there are disagreements on this and it requires further study as it directly relates to the situation your lamp would be installed in. howman

@howman: I agree Classic