Nasa. Bob Cahalan
This Landsat 7 image of clouds off the Chilean coast near the Juan Fernandez Islands (also known as the Robinson Crusoe Islands) on September 15, 1999, shows a unique pattern called a "von Kármán vortex street." This pattern has long been studied in the laboratory, where the vortices are created by oil flowing past a cylindrical obstacle, making a string of vortices only several tens of centimeters long. Study of this classic "flow past a circular cylinder" has been very important in the understanding of laminar and turbulent fluid flow that controls a wide variety of phenomena, from the lift under an aircraft wing to Earth's weather.
in their ability to make themselves known
in morning hours filled with light,
during day's cognizance.
In dreams, I learn
to ride the wave of breath
to its natural end,
of that interior landscape
so ready to receive.
wrapping itself around a calendar date
which marches forward
regardless of intent.
copyright/all rights reserved Audrey Howitt 2015