Examples for

# Physical Quantities

From energy to momentum to magnetic field strength, Wolfram|Alpha has the world's most complete database of computable physical quantities. Query for common notations, basic dimensions, standard units and alternate terminology for thousands of physical quantities using Wolfram|Alpha. Obtain additional information on dimensionless quantities and compute dimensionless combinations of physical quantities.

### Physical Quantities

Retrieve detailed data on physical quantities.

#### Get information about a physical quantity:

#### Compare physical quantities:

Calculate dimensionless combinations of physical quantities.

#### Compute dimensionless combinations:

#### Get information about a theorem in dimensional analysis:

Explore dimensionless quantities that are used in many fields, including mathematics, economics, engineering and physics.