## Dimensionless Numbers

Dimensionless numbers, abbreviated as DN, are nondimensional quantity of dimension one and can not be measured on a scale of physical units.  All quantities of dimension one are said to have the SI coherent derived unit "one" with the symbol "1".  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 or quantities are used in many disiplines such as chemistry, economics, engineering, mathematics, and physics.

### Nomenclature & Symbols for Engineering, Mathematics, & Science

Display #
Title
Archimedes Number
Arrhenius Number
Atomic Number
Atwood Number
Biot Number
Bodenstein Number
Bond Number
Capillary Number
Cauchy Number
Cavitation Number
Darcy-Weisbach Equation
Dean Number
Drag Coefficient
Eckert Number
Elasticity Number
Ericksen Number
Euler Number
Fourier Number
Froude Number
Galileo Number
Graetz Number
Grashof Number
Hagen Number