A bulb will last almost forever if it has a good vacuum (or filled with a pure noble gas) and is run at way below its design voltage. The amazing thing is that some idiot hasn't broken it.
Edward: Cite? Our eyes see green as brighter than red, but I would think a 5mw green laser would have the same effect as a 5mw red one. i.e., not much.
So, Nick, you only use it in bottles with a small opening. Consumers would like it, but do the manufacturers want less waste? After all, they would end up selling less, not to mention the cost of adding the coating.
Consumers would like it, but do the manufacturers want less waste? After all, they would end up selling less, not to mention the cost of adding the coating.
http://goo.gl/OkMv3