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Friday, December 4, 2015

Anything Goes Friday

Sun and shadow on Tortugas's west flank
I've often wondered why a jet contrail can cast a shadow in seemingly blue sky, but clouds themselves never do.  My research led me to discover that the shadow cast (like that in image #9) is visible because there is a thin layer of clouds beneath it that are invisible to the naked eye, and the shadow shows up there--like the shadow of a window crossbar which is visible in a thin layer of oven smoke when sun shines through the pane.  
One way up the mountain

Large Torrey Yucca

Even larger Torrey Yucca

Dragon-like cloud

In the shadow of a bush (not Jeb)

Single-track across the desert

Happy hiker striking west

Edge Shadow (aka Volumetric Shadow) of a jet contrail

Soaptree Yuccas and Creosote Bushes in an arroyo west of the mountain

Jets over Bishop Cap (left) and the Franklin Mountains

The Lone Yucca

Desert Marigold bloomin on December 4th

Scouting for critters on our return to the mountain

1 comment:

Dr. K said...

I wonder if those marigolds will still be blooming on Christmas. I guess we'll have to check it out.

Abbreviated Outing

Cold hedgehog 37F with a windchill of 30F when we started off this morning; but the cold, powerful wind convinced us immediately that we wou...