Base Unit Statement
Defines a physical quantity and its standard measure.
Base Unit name In standard_unit [ = expression ]
- Mandatory name for a physical quantity, such as length or time.
- Mandatory unit expression is the standard unit to measure the given physical quantity.
- Optional unit expression makes a relation between a physical quantity and its parents.
The names used in
standard_unit must come from declarations of
The names used must not be the same as some different units.
For derived units, you can use
expression to prevent this problem.
You can use
name to declare elements, such as variables.
Then it uses the standard unit.
But you cannot use
name in unit expressions, such as those after a number.
Base Unit length In meters Base Unit mass In kilograms Base Unit time In seconds
Base Unit velocity In (meters/second) = (length/time)