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Measures of Rotation Rate of the Table
The rotation rate of our table can be quoted in various units. The following
are often used  period, revolutions per minute, or units of 'f',
as described below:

The angular velocity of the tank,
Ω
, in radians per second

The Coriolis
parameter (f)
defined as f = 2Ω

The period of one
revolution of the tank, τ,
in seconds is τ
= 2π/Ω

Revolutions per
minute, rpm = 60/τ
Conversion table
Ω (rad/s)

0 
0.25 
0.5 
1 
1.5 
2 
f=2Ω(rad/s) 
0 
0.5 
1 
2 
3 
4 
τ(s) 
∞ 
8π
= 25. 1 
4π
= 12. 6 
2π
= 6. 3 
4π/3
= 4. 2 
π
= 3.14 
rpm 
0 
2. 4 
4. 7 
9.5 
14.3 
19.1 
Note that on the 'big' table pictured above, the digital readout is the rotation rate in
`millif': thus 1000 is a rotation rate of 1× f: the period of rotation is thus
12.6 s.
