23 October 2006

Clouds

I did not take any of these photos, but thought they were so good
I'd post them anyway.

A combination of sunset and cloud formations caused by the upsurge
of air around the mountain makes a great picyure.

And the same can be said for these reflected in the lakes still water.

Just love these high level clouds being formed into such an interesting
pattern by the wind above them.


Above, an F/A-18 Hornet was photographed just as it broke
the sound barrier.

Explanation: Many people have heard a sonic boom, but few have
seen one. When an airplane travels at a speed faster than sound,
density waves of sound emitted by the plane cannot precede the
plane, and so accumulate in a cone behind the plane.
When this shock wave passes, a listener hears all at once the sound
emitted over a longer period: a sonic boom. As a plane accelerates
to just break the sound barrier, however, an unusual cloud might
form. The origin of this cloud is still debated.
A leading theory is that a drop in air pressure at the plane
described
by the Prandtl-Glauert Singularity occurs so that moist
air condenses
there to form water droplets.

Yeah, that's exactly what I was going to say!!!

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