TEVAL
Evaluation of simple Cstyle numerical expressions
Technical remarks
Cite
Contact
SiIO
 Preparing scripts ... 
Evaluate
Clear
Functions
Constants
pi
π =
e
Euler number, e =
pg
Constant of Gravitation, G =
N·m
^{2}
/kg
^{2}
pc
Speed of light in vacuum, c =
m/s
pd
Vacuum permittivity, ε
_{0}
=
A·s/(V·m)
pa
Vacuum permeability, µ
_{0}
=
V·s/(A·m)
pe
Elementary charge, e =
C
ph
Planck constant, h =
J·s
pq
h/(2π), ħ =
J·s
pk
Boltzmann constant, k =
J/K
pp
Proton mass, m
_{p}
=
kg
pm
Electron mass, m
_{e}
=
kg
pu
Atomic mass unit, u =
kg
pn
Avogadro constant, N
_{A}
=
1/mol
Source:
The NIST Reference on Constants, Units, and Uncertainty
, Physical Measurement Laboratory, National Institute of Standards and Technology, USA (09.2015)
+

*
/
^
abs()
int()
hev()
ln()
exp()
log()
sqrt()
sin()
cos()
tan()
cot()
asin()
acos()
atan()
acot()
sinh()
cosh()
tanh()
coth()
Type an expression in the upper text field (real arithmetic only).
Evaluate
shows the result in the field below.
Clear
deletes both lines.
Functions
and
Constants
display the functions and some physical constants the script knows about.