|Huge dust whirlwind as it spirals along the ground in Arizona, USAhttp://www.sciencekids.co.nz/pictures/weather/dustwhirlwind.html|
Inside, a fan blows air which one can feel and the low pressure air caused by the “air going into the vacuum cleaner draws up small objects which then get trapped in bags, canisters or filters” partly reads .
|Vacuum cleaner photo from|
|African cross representing 4 mythical Sapitwa winds|
|Internet art clip of blue whirlwind|
|Spiral Sea snails from http://www.ebay.com.au/bhp/sea-shells|