mp-units/docs/reference/systems_reference/systems/natural.md

Natural System

Namespace: mp_units::natural

Module: mp_units.systems

Header: <mp-units/systems/natural.h>

Dimensions

Name	Symbol
dim_energy	E

Quantities

Quantity	Character	Dimension	is_kind	Kind of	Parent	Equation	Hierarchy
acceleration	Real	E	—	energy	energy	—	view
angular_measure	Real	—	—	dimensionless	dimensionless	—	view
dimensionless	Real	1	✓	dimensionless	—	—	—
energy	Real	E	✓	energy	—	—	view
energy_squared	Real	E²	✓	energy_squared	—	pow<2>(energy)	view
force	Real	E²	—	energy_squared	energy_squared	energy_squared	view
inverse_energy	Real	E⁻¹	✓	inverse_energy	—	inverse(energy)	view
length	Real	E⁻¹	—	inverse_energy	inverse_energy	—	view
mass	Real	E	—	energy	energy	—	view
momentum	Real	E	—	energy	energy	—	view
speed	Real	—	—	dimensionless	dimensionless	—	view
temperature	Real	E	—	energy	energy	—	view
time	Real	E⁻¹	—	inverse_energy	inverse_energy	—	view
velocity	Real	—	—	dimensionless	speed	—	view

Units

Unit Name	Symbol	unit_symbol	Definition
electronvolt	eV	—	kind: energy
gigaelectronvolt	—	GeV	si::giga<electronvolt>
speed_of_light	—	—	alias to mp_units::one