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From: "James Wilkinson Sword" <imvalid@somewear.com>
Newsgroups: comp.os.linux.advocacy,comp.sys.mac.system,alt.comp.os.windows-10,alt.cellular-phone-tech
Subject: Re: Apple told to warn against charging phone in bath after man's electrocution
Date: Sun, 23 Apr 2017 19:58:51 +0100
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On Sun, 23 Apr 2017 19:18:00 +0100, Mark Lloyd <not@mail.invalid> wrote:

>
> [snip]
>
>>> I do have some purple LEDs (for Halloween). I don't really know how the
>>> color is produced, perhaps red and blue LEDs in the same package.
>>
>> Sure they're just not violet?
>>
>
> A LED emits one particular frequency of light. There is no frequency
> that corresponds to purple (or any mix of red and blue).

That's why I asked if they're not just violet.  That would look purple to your eye, but be one colour for the LED to emit.  I've got a load of them on order to use for an insect killer.

-- 
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