electronvolt 0.1.0

A physical quantity calculator.

Demo

Rest mass of an electron

>>> me
9.1093837015e-31 kg

Speed of light

>>> c
299792458.0 m * s**-1

Rest energy of an electron

>>> me * c**2
8.187105776823886e-14 m**2 * s**-2 * kg

In mega electronvolts

>>> me * c**2 / MeV
0.5109989499961642

This matches the rest energy of electron on Wikipedia.

Usage

Install this module using pip via pip install electronvolt.

For best experience, use in an interactive python environment, e.g. jupyter notebook, and import using from electronvolt import *.

Alternatively, run this module online HERE. This page typically loads in 3 minutes. Use shift+enter to run a block of code. Run the first block to initialize the calculator. Run the second block to feel how it works.

Units and Constants

Variable Name	Value	Unit
Math Constants
pi	3.141592653589790
euler	2.718281828459050
SI Metric Prefixes
yotta	1E+24
zetta	1E+21
exa	1E+18
peta	1000000000000000.0
tera	1000000000000.0
giga	1000000000.0
mega	1000000.0
kilo	1000.0
hecto	100.0
deca	10.0
deci	0.1
centi	0.01
milli	0.001
micro	1E-06
nano	1E-09
pico	1E-12
femto	1E-15
atto	1E-18
zepto	1E-21
yocto	1E-24
Units
kg	1	kg
m	1	m
s	1	s
A	1	A
mol	1	mol
K	1	K
Cd	1	Cd
Hz	1.0	s**-1
N	1.0	kg * m * s**-2
Pa	1.0	kg * m**-1 * s**-2
J	1.0	kg * m**2 * s**-2
W	1.0	kg * m**2 * s**-3
C	1	A * s
V	1.0	m**2 * A**-1 * kg * s**-3
F	1.0	kg**-1 * m**-2 * A**2 * s**4
T	1.0	A**-1 * kg * s**-2
Wb	1.0	A**-1 * kg * m**2 * s**-2
Ohm	1.0	m**2 * A**-2 * kg * s**-3
H	1.0	m**2 * A**-2 * kg * s**-2
ms	0.001	s
us	1E-06	s
ns	1E-09	s
minute	60	s
hour	3600	s
day	86400	s
year	31557600.0	s
dm	0.1	m
cm	0.01	m
mm	0.001	m
um	1E-06	m
nm	1E-09	m
fm	1E-15	m
km	1000.0	m
L	0.0010000000000000000	m**3
kph	0.2777777777777780	m * s**-1
mile	1609.344	m
mph	0.44704	m * s**-1
Constants
c	299792458.0	m * s**-1
h	6.62607015E-34	kg * m**2 * s**-1
hbar	1.05457181764616E-34	kg * m**2 * s**-1
G	6.6743E-11	kg**-1 * m**3 * s**-2
mu0	1.25663706212E-06	m * A**-2 * kg * s**-2
epsilon0	8.85418781280039E-12	kg**-1 * A**2 * m**-3 * s**4
e	1.602176634E-19	A * s
NA	6.02214076E+23	mol**-1
kB	1.380649E-23	kg * m**2 * s**-2 * K**-1
me	9.1093837015E-31	kg
mp	1.67262192369E-27	kg
mn	1.67492749804E-27	kg
Da	1.6605390666E-27	kg
u	1.6605390666E-27	kg
R	8.31446261815324	m**2 * K**-1 * mol**-1 * kg * s**-2
sigma	5.670374419E-08	kg * s**-3 * K**-4
ly	9460730472580800.0	m
g	9.80665	m * s**-2
gram	0.001	kg
k	8987551792.26078	A**-2 * kg * m**3 * s**-4
eV	1.602176634E-19	kg * m**2 * s**-2
keV	1.602176634E-16	kg * m**2 * s**-2
MeV	1.602176634E-13	kg * m**2 * s**-2
GeV	1.602176634E-10	kg * m**2 * s**-2
TeV	1.602176634E-07	kg * m**2 * s**-2
MeVpc2	1.7826619216279E-30	kg
a0	5.29177210906108E-11	m
hground	-2.17987236108603E-18	m**2 * kg * s**-2
Rinfty	10973731.568071600	m**-1
alpha	0.007297352569277710