HP 33s - Manual (Page 73)

Real–Number Functions 4–9
Items Description Value
{TH} Classical electron radius 2.817940285 ×10 –15
m
{'
µ
} Characteristic impendence of
vacuum 376.730313461 Ω
{ λF} Compton wavelength 2.426310215 ×10 –12
m
{ λ
FQ
} Neutron Compton wavelength 1.319590898 ×10 –15 m
{ λ
FR
} Proton Compton wavelength 1.321409847 ×10 –15
m
{ α} Fine structure constant 7.297352533 ×10 –3
{ σ} Stefan–Boltzmann constant 5.6704 ×10 –8
W m –2 K –4
{V} Celsius temperature 273.15
{aVP} Standard atmosphere 101325 Pa
{͋R} Proton gyromagnetic ratio 267522212 s –1 T –1
{} First radiation constant 374177107 ×10 –16
W m 2
{} Second radiation constant 0.014387752 m K
{
µ
} Conductance quantum 7.748091696 ×10 –5
S
Reference: Peter J.Mohr and Barry N.Taylor, CODATA Recommended Values of
the Fundamental Physical Constants: 1998, Journal of Physical and Chemical
Reference Data,Vol.28, No.6,1999 and Reviews of Modern Physics,Vol.72,
No.2, 2000.

To insert a constant:
1. Position your cursor where you want the constant inserted.
2. Press | ž to display the physics constants menu.
3. Press —˜™š (or, you can press | ž to access
the next page, one page at a time) to scroll through the menu until the constant
you want is underlined, then press
‘ to insert the constant.
Conversion Functions
There are four types of conversions: coordinate (polar/rectangular), angular
(degrees/radians), time (decimal/minutes–seconds), and unit (cm/in, °C/°F, l/gal,
kg/lb).