Filter
Top Products
Units and constants 443
23
Units and constants
Units
A unit of measurement—such as inch, ohm, or
Becquerel—enables you to give a precise magnitude to a
physical quantity.
You can attach a unit of measurement to any number or
numerical result. A numerical value with units attached is
referred to as a measurement. You can operate on
measurements just as you do on numbers without attached
units. The units are kept with the numbers in subsequent
operations.
The units are on the Units menu. Press
SF (Units)
and, if necessary, tap .
The menu is organized by category. Each category is
listed at the left, with the units in the selected category
listed at the right.
Unit categories
• length
• area
• volume
• time
• speed
• mass
• acceleration
• force
• energy
• power
• pressure
• temperature
• electricity
• light
• angle
• viscosity
• radiation