Vortex
This is a simulated vortex I saw at the Chicago Museum of Science and Technology. They use a vapor to produce it and they study tornadoes etc. The museum had a lot of great exhibits.
Uploaded on June 28, 2012
Copyright for this photo belongs solely to Kimber Wallwork-Heineman. Images may not be copied, downloaded, or used in any way without the expressed, written permission of the photographer.