Re: horizion refraction question

Robert Sheaffer wrote:
> What you're describing is almost certainly a "superior mirage" over
Lake
> Erie, . . . Lights normally below the horizon are being refracted
upward
> by a temperature inversion (warmer air above colder) in the
atmosphere.
> This is the opposite of an "inferior mirage" (objects seen lower)
> like we see on roads on hot days.

The EPOD recently (3-31-2005) had a good animated gif sequence showing
of a superior mirage of a ship off France.
http://epod.usra.edu/archive/epodviewer.php3?oid=239648

Here's a sunset inferior mirage -
http://www.sundog.clara.co.uk/atoptics/sunmir.htm

- Canopus56

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