dimensionless number
C1388
concept
A dimensionless number is a pure ratio of quantities that has no physical units, often used to characterize and compare physical phenomena independent of measurement systems.
All labels observed (10)
| Label | Occurrences |
|---|---|
| dimensionless quantity | 10 |
| dimensionless number canonical | 3 |
| dimensionless parameter | 2 |
| dimensionless physical constant | 2 |
| dimensionless physical quantity | 2 |
| similarity parameter | 2 |
| dimensionless physical parameter | 1 |
| fluid dynamics parameter | 1 |
| nondimensional number | 1 |
| nondimensional number in fluid dynamics | 1 |
Instances (20)
| Instance | Via concept surface |
|---|---|
|
A. M. Rhys
surface form:
Huang–Rhys factor
|
dimensionless parameter |
| Landé g-factor | dimensionless physical quantity |
| Shields parameter | — |
| Purcell factor | dimensionless quantity |
| Huang–Rhys factor | dimensionless physical quantity |
| Eddington number | dimensionless quantity |
|
Knudsen
surface form:
Knudsen number
|
dimensionless quantity |
| Froude number | dimensionless quantity |
| Knudsen number | dimensionless quantity |
| Wigner-Seitz radius r_s | dimensionless physical parameter |
| von Kármán constant | dimensionless physical constant |
| Poisson’s ratio | dimensionless quantity |
| fine-structure constant | dimensionless physical constant |
|
Kuo-Chen Huang
surface form:
Huang–Rhys factor
|
dimensionless parameter |
| Reynolds number | dimensionless quantity |
| Rossby number | dimensionless quantity |
| Chandrasekhar number | — |
| Shields number | — |
|
Mach
surface form:
Mach number
|
dimensionless quantity |
| Mach number | dimensionless quantity |