Chapter 3 Singular Optics and Phase Properties
Hurricanes, tornadoes, and water spouts evoke a special sense of wonder, not only by their majestic size but by the rotational motion that they entail. “The eye of the storm,” the vortex, is particularly mysterious. It represents a place where there is a void; a place that is at the center of something unique; a channel that takes you to an unknown place.
Smaller vortices pose no lack of awe. The swirls in fluids or the turbulent wakes off airplane wing-tips are examples of a ubiquitous phenomenon. Physicists and scientists alike are no less impressed by such rotational displays; magnetic vortices, DNA, and other natural twirls are topics of constant study. ...
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