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Subject:
Re: Question for Bill Tindall and others on LED li

Bill Tindall, E.Tn.
I read somewhere that there is no such thing as a white LED. True

No such thing as white fluorescent either.

They are really blue and covered with phosphors that glow white. One means to white appearing light is to use a LED that emits UV light and use it to excite phosphors like in a fluorescent lamp. The phosphors can be diddled with to more or less, depending on LED quality, simulate white light appearance. The success will show up in the CRI value. There are other ways to get white looking LED light.

The problem is that the blue light is harmful to humans and while we can't see it, it has the potential to damage Eyes and skin and can penetrate the skin. there is so much wrong here I don't know where to begin.

Is it true there is an underlying problem with LED's? no

Is it true there is an underlying problem with LED's? No

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