Tornado demonstration

S. Sonner, Tornado Demonstration at Nevada Science Museum Goes Awry, Injuring 13, Huffington Post, posted on 9/3/2014, http //www. hufBngtonpost.com/2014/09/03/mishap-at-science-museum n 5762 884.html, (accessed Oct 2014). 

The practical consequence of Eq. (2) for rotational fluid flow can be quite dramatic, as demonstrated by the high wind speeds that may be generated near the center of free vortex flows—e.g., tornadoes and typhoons. 

We are generally unaware of the atmosphere around us, just as fish are unaware of the sea. Nonetheless, we swim in an ocean of air and are occasionally reminded when a tree is knocked down by a storm or a tornado levels a town. This demonstration is also an effective reminder of the presence and power of the pressure of the atmosphere. 

In this demonstration, potassium iodide (K+I ) is slowly added to a vigorously stirred mercuric nitrate (Hg +(N03 )2) solution. This results in the formation of an orange precipitate of Hgl2 in the form of an orange tornado, which disappears and re-forms altematingly for a few minutes. Eventually, when a sufficient amount... 

The scientific community almost unanimously agrees that global warming is accompanied by changes in the frequency and intensity of extreme climatic events such as intense hurricanes, tornadoes, and flooding from more frequent and intense rainfall [22-24], These events almost always result in the release of large quantities of toxic chemical mixtures of unpredictable composition. The following sections demonstrate this phenomenon. 

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