"Gordon" wrote in news:1164334010.238291.138190
@j44g2000cwa.googlegroups.com:


eponymous cowherd wrote:
In article ,
Yeff wrote:

http://antwrp.gsfc.nasa.gov/apod/ap021110.html
http://www.sundog.clara.co.uk/atoptics/gfim12.htm
http://spaceweather.com/swpod2006/31jan06/zinkova.jpg

So, anyone ever seen it from the air or a boat?

I've never seen it and don't understand why, if it exists, it should be
so difficult to see.

"If it exists"? We aren't talking about Bigfoot sightings - its a met
phenomenon that is occasionally photographed and you can find in
several places on the net.

It does exist.

As for the difficulty of viewing, there are several factors that must be
right all at once for the effect to be seen

1. Sharp horizon - gotta be looking across water.
2. No clouds - they block the sun.
3. No, or very little, haze - it affects the refraction.

Dave in San Diego