Some new experiments using an improved version of the “tornado tube” are described here. The improved tornado tube consists of two plastic transparent bottles whose openings are connected with a ball valve, available at most hardware stores. After being filled with fluid and inverting, this tube allows demonstration of the generation, annihilation, and reanimation of vortices, or tornados.

Topics
Kinematics, Newtonian mechanics, Hydrology, Atmospheric science, Educational aids, Educational assessment, Viscosity, Public policy and governance
3
D.
 
Halliday
,
R.
 
Resnick
, and
J.
 
Walker
,
Fundamentals of Physics, Part 2
(
Wiley
,
New York
,
2001
), p.
72
.
Google Scholar
 
4
L. D.
 
Landau
 and
E. M.
 
Liftszhitz
,
Fluid Mechanics
(
Pergamon Press
,
New York
,
1975
), p.
67
.
Google Scholar
 
5
F. M.
 
White
,
Viscous Fluid Flow
(
McGraw-Hill Company
,
New York
,
2001
), p.
92
.
Google Scholar
 
6
D.
 
Halliday
,
R.
 
Resnick
 and
J.
 
Walker
,
Fundamentals of Physics, Part 1
(
Wiley
,
New York
 
2001
), p.
270
.
Google Scholar
 
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2016
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