Texas Instruments TITANIUM TI-89 - Manual (Page 293)

Constants and Measurement Units 293
List of Pre-Defined Constants and Units List of Pre-Defined Constants and Units List of Pre-Defined Constants and Units List of Pre-Defined Constants and Units
This section lists the pre-defined constants and units by category. You can select any of
these from the UNITS dialog box. If you use
3 to set default units, note that
categories with only one defined unit are not listed.
Defaults for SI and ENG/US Defaults for SI and ENG/US Defaults for SI and ENG/US Defaults for SI and ENG/US
The SI and ENG/US systems of measurement use built-in default units. In this section,
the built-in defaults are indicated by (SI) and (ENG/US). In some categories, both
systems use the same default.
Some categories do not have default units.
Constants Constants Constants Constants
Description Value
_c speed of light 2.99792458E8_m/_s
_Cc coulomb constant
8.9875517873682E9_N ø _m
2–
/_coul
2
_g acceleration of gravity
9.80665_m/_s
2
_Gc gravitational constant
6.6742E ‘M 11_m
3
/_kg/_s
2
_h Planck’s constant 6.6260693E ‘M 34_J ø _s
_k Boltzmann’s constant 1.3806505E ‘M 23_J/_ ¡ K
_Me electron rest mass 9.1093826E ‘M 31_kg