The field of electricity and magnetism uses many different physical quantities, from voltage and current to the Hartmann number and magnetic memristance. Use Wolfram|Alpha to explore these physical quantities. Calculate dimensionless combinations of electromagnetic physical quantities and compute dimensionless electrodynamic quantities. Investigate specific measuring devices.
Examine how different electromagnetic physical quantities are measured.
Determine what combinations of physical quantities can be used to construct a dimensionless expression.
Explore and compute dimensionless electrodynamic quantities.
Query for common notations, basic dimensions, standard units and alternate terminology for thousands of physical quantities.