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Dear Steve Willner:
"Steve Willner" <willner@xxxxxxxxxxxxxxx> wrote in message
news:42f7d731$1@xxxxxxxxxxxxxxxxxxxxxxxxxx
> In article <fOTIe.260908$Qo.161878@fed1read01>,
> "N:dlzc D:aol T:com \(dlzc\)" <N: dlzc1 D:cox T:net@xxxxxxxxxx>
> writes:
> [in the solar atmosphere]
>> OK. Note however that you can observe over a pretty long
>> distance, and it is approximately isothermal along along the
>> line-of-site.
>
> Except for very special wavelengths (e.g., in spectral lines of
> exactly the right opacity), I think you will have a hard time
> finding
> a line of sight through or into the solar atmosphere that is
> even
> approximately isothermal.
...and observation at/near very special wavelengths will make
determination/estimation of a blackbody curve a sort of private
joke. Thanks!
David A. Smith
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