Dimensionless Numbers

These numbers have a quantity of one and can not be measured on a scale of physical units.  It is a pure number, thus always having a dimension of 1. The number does not change even if the number system you are working in does.  Dimensionless numbers are used in engineering, mathematics, physics and economics.

Nomenclature & Symbols for Engineering, Mathematics, and Scienceor 

Display #
Knudsen Number
Laplace Number
Lewis Number
Lift Coefficient
Loss Coefficient
Mach Number
Nusselt Number
Ohnesorge Number
Peclet Number
Pipeline Parameter
Power Number
Prandtl Number
Pressure Coefficient
Pressure Gradient
Rayleigh Number
Relative Density
Relative Roughness
Resistance Coefficient
Reynolds Number
Rossby Number
Schmidt Number
Shape Factor
Sherwood Number
Specific Gravity