Texas Instruments TI-89 Titanium User Manual page 282

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
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
Description
_c speed of light
_Cc coulomb constant
_g acceleration of gravity
_Gc gravitational constant
_h Planck's constant
_k Boltzmann's constant
_Me electron rest mass
Constants and Measurement Units
Value
2.99792458E8_m/_s
8.9875517873682E9_N
2
9.80665_m/_s
3
6.67259E 11_m /_kg/_s
'M
6.6260755E 34_J
'M ø
1.380658E 'M 23_J/_ ¡
9.1093897E 'M 31_kg
2– 2
_m /_coul
ø
2
_s
K
279