Images Dated 6th October 2000
Available as Framed Prints, Photos, Wall Art and Gift Items
Choose from 5 pictures in our Images Dated 6th October 2000 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.
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Featured 6 Oct 2000 Print
Steam ring
Steam ring. Steam ring being blown from the Bocca Nuova vent of Mount Etna, Sicily. Steam rings are generated when a pulse of steam is ejected from a near-cylindrical volcanic vent. The steam in the centre of the pulse is propelled by thermal forces, whereas the steam at the edge of the ring suffers drag from the surrounding air. This results in an annular rotation, which in the correct initial conditions can become stable over a span of a few minutes. This is directly analogous to blowing smoke rings. Photographed in February 2000
© DR JUERG ALEAN/SCIENCE PHOTO LIBRARY