I'd like to point something what I find out about LED's.There are two or three characteristics why LED's are important.very low consumption and very long life.In any data book about any LED tipe you will find a lot of technical characteristics like volts,watts,lumens,dimensions,etc...but you will not see from what material electrods are made ,how pure is or how much silicium is in there .Is important because this is what gives LED a longer or shorter life.Nichia Co., is a very serious LED producer,for ex..
Here is a method to solve the unidirectional characteristic of LED light,spreading the light with liquid,kerosene ,for ex. I can not post link,so search with Google liquid LED light bulbs.
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