dimensionless number

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dimensionless number

mechanics

Also known as: nondimensional parameter

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characteristics

In mechanics: Units and dimensions
There are also important dimensionless numbers in nature, such as the number π = 3.14159 . . . . Dimensionless numbers may be constructed as ratios of quantities having the same dimension. Thus, the number π is the ratio of the circumference of a circle (a length) to its…
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