All posts by WPOTD Editor

Van Gogh Clouds in Finland

Kelvin-Helmholtz Clouds aka “van Gogh clouds”
Taken by Matti Helin on October 29, 2018 in Finland

Helin snapped this picture of “van Gogh clouds”

These clouds, also known as “billow clouds,” are produced by the Kelvin-Helmholtz instability when horizontal layers of air brush by one another at different velocities. It is widely believed that these waves in the sky inspired the swirls in van Gogh’s masterpiece The Starry Night.

In this case, the clouds were traced by the motion of air and painted by the colors of the Arctic sunset. Helin’s video of the phenomenon sets the canvas in motion. Watch it on Youtube.

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Beautiful Sunrise

Stunning sunrise over the May Isle in the Firth of Forth.  Picture taken from the Village of St Monans in the East Neuk of Fife.  The sky was constantly changing colour as the light level increased, unfortunately I didn’t manage to capture initial sunrise when the colours were even more spectacular.  Pictures taken on a Samsung Galaxy Xcover 4 mobile phone ,no touching up or enhancement.  For some reason this phone takes better pictures than any camera i have ever owned.  The wonders of modern technology.

Photo Credit: Robert Gallacher

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Saturn V in the Fog

Saturn V model standing up up next to the restored flight article (one of only 2 still in existence) in the Davidson Center for Space Exploration in Huntsville Alabama. I had the privilege to work with Julian Davidson, one of the pioneer engineers who worked on the NASA space program, a wonderful and kind man.

Photo Credit: Thierry Copie

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After the Thunderstorm Sunset

A surprise October booming thunderstorm in Tucson AZ lasting much of the day. The storm departed at Sunset leaving a growing blue band of sky under a cloudy red sky. This image was captured with a Nikon D850 and a Sigma 20 mm Art lens.

Photo Credit:  Eliot Herman

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