Friday, August 30, 2013

An interesting look at a minor tornado


A British farmer took this video clip of a dust-devil (or whatever the British call such things - a dust dumpling, perhaps?) sucking up new-mown hay from a field on his farm.  I found it interesting because the wisps of hay perfectly illustrate the central high-speed vortex from time to time, while the wider bands of revolving air lift the hay more gently.





It's a good illustration of how a tornado works, even though the latter's much more powerful.

Peter

2 comments:

Sunnybrook Farm said...

I would be mad as hell if it tore up my hay like that, didn't seem to bother this guy. Of course he said it was straw so maybe he didn't care if it got blown away.

Old NFO said...

Yep, that one will end up in a classroom presentation within a year! Reality is MUCH better than models.