Re: Isn't IR LED an oxymoron?

[Javier Fernandez Baldomero <javier@xxxxxxxxxxxx>]

Willem-Jan Markerink wrote:
> 
> In article <35AD0504.734C@xxxxxxxxxxxxxxxxx>,
>    Don Stauffer <stauffer@xxxxxxxxxxxxxxxxx> wrote:
> >Well, subject line says it  :-)
> >
> 
> Might be true for a diode in specific (low intensity), but 'IR-light' is
> not an oxymoron AFAIK....once you crank up intensity, you can still see IR.
> The common visible limit of 780nm more or less applies to daylight

	Can't remember where, I read about an experiment in
2ndWorldWar, that volunteers from the USNavy where recruited
to be fed with an specifically designed diet (carotens, retinol
and too-many-other-names-of-the-vitamins-and-proteins-to-be-
- -able-to-remember-them-all). The target of the experiment was to
check whether it was possible or not to have humans sense
IR messaging with IR morse lamps (linterns? lanterns?) between
ships at night.

	The result were two-fold. On one hand, they succeeded.
Volunteers did develop the ability to see IR Morse at night, and
had no (collateral? secondary? pernicious? bad? after?) effects.
On the other hand, the success was rendered obsolete by radar.
(radar? or something like that... Huh, probably I need a specifical
diet for my memories... where should I apply? :-)

- -javier


- --
Bye,

Willem-Jan Markerink


      The desire to understand
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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End of Infrared-Digest V0 #689
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