ALPHAMASS |
6.6446565×10-27 |
kg |
Alpha particle mass |
APERY |
1.202056903159594 |
|
Apery's Constant: ζ3 = 1 + 1/2³ + 1/3³ + 1/4³ + ... |
ASTROUNIT |
1.495979×108 |
km |
au = astronomical unit (mean distance between the Earth and Sun) ≈ 92.956×106 mi |
ATMOSPHERE |
1.01325×105 |
Pa |
atm = standard atmosphere |
ATOMICMASS |
1.66053886×10-27 |
kg |
amu = atomic mass unit |
AVOGADRO |
6.02214153×1023 |
/mol |
Avogadro constant |
|
BOHRMAGN |
927.400949×10-26 |
J/T |
μB = Bohr magneton |
BOHRRADIUS |
0.5291772108×10-10 |
m |
Bohr radius: size of the ground state hydrogen atom |
BOLTZMANN |
1.3806505×10-23 |
J/K |
Boltzmann constant |
BTUPKJ |
0.94782 |
BTU/kJ |
Conversion factor - BTUs per kilojoule |
|
c†
⇒ LIGHTSPEED |
2.99792458×108 |
m/s |
c = Speed of light in a vacuum |
CALORIE |
4.1868 |
J |
Energy to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure |
CALPJ |
0.23885 |
cal/J |
Conversion factor: calories per joule |
CATALAN |
0.915965594177219 |
|
K = Catalan's constant |
COMPTON |
2.426310238×10-12 |
m |
Λc = Compton Wavelength |
CONDQ |
7.748091733×10-5 |
S |
G0 = Conductance Quantum |
COULOMB |
8.9876551787×109 |
Nm2/C2 |
Coulomb's Constant: ke = 1.0/(4πε0) = 8.987552×109 Nm2/C2 |
CUBERT2 |
1.259921049894873 |
|
³√ 2 = Cube root of 2 |
CUBERT3 |
1.442249570307408 |
|
³√ 3 = Cube root of 3 |
|
D2RADIANS |
0.0174532925199433 |
rad/° |
2π/360 = Angle conversion factor |
DAYLENGTH |
86164.09 |
s |
Seconds per sidereal day (1 day = 23h 56m 4.09s) |
DEUTERONMASS |
3.34358335×10-27 |
kg |
Deuteron mass |
|
e†
⇒ ENAT |
2.718281828459045 |
|
e = base of the natural logarithms |
EINV |
0.367879441171442 |
|
1.0/e |
ELECTRIC |
8.854187817×10-12 |
F/m |
ε0 = 1/(μ0c²) = Electric constant: permittivity of vacuum |
ELECTRONMASS |
9.1093826×10-31 |
kg |
Electron mass |
ELECTRONVOLT |
1.60217653×10-19 |
J |
eV = electron volt |
ELEMENTARYCHG |
1.60217653×10-19 |
C |
Elementary charge |
ENAT (e†) |
2.718281828459045 |
|
e = base of the natural logarithms |
ESQUARED |
7.389056098930650 |
|
e² |
ETOPI |
23.14069263277927 |
|
eπ |
EULER |
0.577215664901533 |
|
Euler constant |
|
FARADAY |
96485.3383 |
C/mol |
Faraday constant |
FIFTEENK |
9.320568 |
mi |
15,000 meters |
FINESTRUCT |
7.297352568×10-3 |
|
Fine-structure constant |
FIVEK |
3.106856 |
mi |
5,000 meters |
FOOT |
0.3048 |
m |
Unit of length in the British System (12 inches) |
FOURTHPI |
0.785398163397448 |
|
π/4 |
FTLBFPJOULE |
1.35581795 |
ft-lbf/J |
Conversion factor - ft-lbf per joule |
|
g†
⇒ GRAVITY |
9.80665 |
m/s² |
g = standard acceleration of
gravity (≈ 32.174 ft/s²) |
GALUKPL |
0.219969 |
galUK/l |
Conversion factor - UK gallons per liter |
GALUSPL |
0.264172 |
galUS/l |
Conversion factor - US gallons per liter |
GASCONST |
8.314472 |
J/mol/K |
R = Molar Gas Constant |
GRAM |
2.20462×10-3 |
lb |
Unit of mass in the Metric System (0.03527 oz) |
GRAVITATIONAL |
6.67384×10-11 |
m3/kg/s2 |
G = Gravitational constant |
GRAVITY (g†) |
9.80665 |
m/s2 |
g = standard acceleration of gravity |
|
h†
⇒ PLANCK |
6.6260693×10-34 |
Js |
h = Planck constant |
HALFMARATHON |
13.109375 |
mi |
Half Marathon: 13mi 192.5yds = 21.0975km |
HALFPI |
1.5707963267949 |
|
π/2 |
HARTREE |
4.35974417×10-18 |
J |
Hartree constant = 2 * (binding energy of the ground state electron in the hydrogen atom) |
|
INCH |
0.0254 |
m |
Unit of length in British system |
INVFINESTR |
137.03599911 |
|
Inverse of the fine-structure constant |
|
JOSEPHSON |
483597.879×109 |
hz/V |
Josephson constant |
JOULEPCAL |
4.1868 |
J/cal |
Conversion factor - joules per calorie |
JOULEPFTLBF |
0.73756215 |
J/ft-lbf |
Conversion factor - joules per ft-lbf |
|
KGPLB |
0.45359237 |
kg/lb |
Conversion factor – kilograms per pound (same value as POUND) |
KJOULEPBTU |
1.05506 |
kJ/BTU |
Conversion factor - kilojoules per BTU |
KM |
0.6213712 |
mi |
1 kilometer |
KMPMI |
1.609344 |
km/mi |
Conversion factor – kilometers per mile (same value as MILE) |
KNOT |
1.15078 |
mi/hr |
1 knot (international) |
|
LBPKG |
2.2046226 |
lb/kg |
Conversion factor - pounds per kilogram |
LIGHTSPEED (c†) |
2.99792458×108 |
m/s |
c = Speed of light in a vacuum |
LIGHTYEAR |
9.46053×1012 |
km |
Distance light travels in a year, 5.8785×1012 mi |
LITERPGALUK |
4.54609 |
l/galUK |
Conversion factor - liters per UK gallon |
LITERPGALUS |
3.7854118 |
l/galUS |
Conversion factor - liters per US gallon |
LN10 |
2.302585092994046 |
|
ln(10) = natural logarithm of 10 |
LN2 |
0.693147180559945 |
|
ln(2) = natural logarithm of 2 |
LN3 |
1.09861228866811 |
|
ln(3) = natural logarithm of 3 |
LOG102 |
0.301029995663981 |
|
log10(2) |
LOG103 |
0.477121254719662 |
|
log10(3) |
LOG10E |
0.444294481903252 |
|
log10(e) |
LUNARMONTH |
29.5306 |
days |
Days per lunar month |
|
MAGNETIC |
12.566370614×10-7 |
N/A2 |
Magnetic constant: permeability of vacuum |
MAGNFLUXQ |
2.06783372×10-15 |
Wb |
Magnetic flux quantum |
MARATHON |
26.21875 |
mi |
The Marathon: 26mi 385yds = 42.195km |
METER |
39.37008 |
in |
Unit of length in the Metric System (3.28084 ft) |
METERPYD |
0.9144002 |
m/yd |
Conversion factor - meters per yard |
METRICMILE |
0.9320568 |
mi |
1500 meters |
MILE |
1.609344 |
km |
1 mile (5280 ft) |
MILEPKM |
0.6213712 |
mi/km |
Conversion factor – miles per kilometer (same value as KM) |
MUONMASS |
1.8835314×10-28 |
kg |
Muon mass |
|
NAUTMILE |
1.15078 |
mi |
1 nautical mile |
NEUTRONMASS |
1.67492728×10-27 |
kg |
Neutron mass |
NUCLMAGN |
5.05078343×10-27 |
J/T |
μN = Nuclear magneton |
|
OUNCE |
0.028349523125 |
kg |
Unit of mass in the British System |
|
PARSEC |
3.262 |
ly |
Distance from the Sun resulting in a parallax of one second of arc as seen from Earth (3.086×1013 km ≈ 1.9176×1013 mi) |