Science
Constants - N to Q

Nn | Oo | Pp | Qq
A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

Horizontal Line

Nn
  Name Symbol Value  
General Mathematical Constants Naperian (natural) logarithm of 10 ln 10 2.30258509299404568402 
 
General Mathematical Constants Naperian (natural) logarithm of 2 ln 2 0.69314718055994530942 
 
General Mathematical Constants Natural logarithm of 10 ln 10 2.30258509299404568402 
 
General Mathematical Constants Natural logarithm of 2 ln 2 0.69314718055994530942 
 
Units of Length Nautical Mile, International 1852 m
 
Units of Length Nautical Mile, UK 1853.18 m
 
Neutron Particle Constants Neutron Compton Wavelength h/mnc λC,n 1.319590898(10) × 10-15 m
Click for More Info on Neutron Compton Wavelength h/m<sub>n</sub>c
Neutron Particle Constants Neutron g-Factor 2µnN gn -3.82608545(90) 
 
Neutron Particle Constants Neutron Gyromagnetic Ratio 2|µn|/ħ γn
γn/2π
1.83247188(44) × 108 s-1 T-1
29.1646958(70) MHz T-1
 
Neutron Particle Constants Neutron Magnetic Moment µn
µnB
µnN
-0.96623640(23) × 10-26 J T-1
-1.04187563(25) × 10-3 
-1.91304272(45) 
 
Neutron Particle Constants Neutron Mass mn 1.67492716(13) × 10-27 kg
1.00866491578(55) u
1.50534946(12) × 10-10 J
 
Neutron Particle Constants Neutron Molar Mass NAmn M(n)
Mn
1.00866491578(55) × 10-3 kg mol-1
 
Neutron Particle Constants Neutron to Shielded Proton Magnetic Moment Ratio (H2O, sphere, 25°C) µn/µ'p -0.68499694(16) 
 
Neutron Particle Constants Neutron-Electron Magnetic Moment Ratio µne 1.04066882(25) × 10-3 
 
Neutron Particle Constants Neutron-Electron Mass Ratio mn/me 1.8386836550(40) 
 
Neutron Particle Constants Neutron-Muon Mass Ratio mn/mµ 8.89248478(27) 
 
Neutron Particle Constants Neutron-Proton Magnetic Moment Ratio µnp -0.68497934(16) 
 
Neutron Particle Constants Neutron-Proton Mass Ratio mn/mp 1.00137841887(58) 
 
Neutron Particle Constants Neutron-Tau Mass Ratio mn/mτ 0.528722(86) 
 
Gravitational Constants Newtonian Constant of Gravitation G
G/ħc
6.673(10) × 10-11 m3 kg-1 s-1
6.707(10) × 10-39 (GeV/c2)-2
 
Electricity Constants Nife Cell, emf of 1.40 V
 
General Mathematical Constants Niven's Constant C 1.7052111401 
 
Electromagnetic Constants Nuclear Magneton µN

µN/h
5.05078317(20) × 10-27 J T-1
3.1524541238(24) × 10-8 eV T-1
7.62259396(31) MHz T-1
 
General Mathematical Constants Number, Gold φ 1.61803398874989484820 
 

Nn | Oo | Pp | Qq
To the top | To the bottom
A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

Horizontal Line

Oo
  Name Symbol Value  
Units of Mass Ounce, Apothecaries' oz (apoth)
oz (ap.)
3.110347680 × 10-2 kg
Click for More Info on Ounce, Apothecaries'
Units of Mass Ounce, Avoirdupois oz avdp
oz (av.)
oz
2.834952313 × 10-2 kg
0.0625 lb (av.)
16 drachms (av.)
Click for More Info on Ounce, Avoirdupois
Units of Mass Ounce, Troy oz 31.103 g
 

Nn | Oo | Pp | Qq
To the top | To the bottom
A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

Horizontal Line

Pp
  Name Symbol Value  
Refractive Indices Paraffin, Refractive Index of np 1.42 
 
Universal Constants Permeability of Free Space µ0 4π × 10-7 N A-2
12.566370614 × 10-7 N A-2
 
Universal Constants Permittivity of Free Space ε0 8.854187817 × 10-12 F m-1
 
General Mathematical Constants Pi π 3.1415926535897932384626433832795 
Click for More Info on Pi
Units of Volume Pint, Dry (US) pt (US, dry) 5.50610469 × 10-4 m3
Click for More Info on Pint, Dry (US)
Units of Volume Pint, Imperial 5.682 × 10-4 m3
 
Units of Volume Pint, Liquid (US) 4.731 × 10-4 m3
 
Universal Constants Planck Constant (h) h 6.62606876(52) × 10-34 J s
4.13566727(16) × 10-15 eV s
 
Universal Constants Planck Constant (h/2π) ħ
(h bar)
1.054571596(82) × 10-34 J s
6.58211889(26) × 10-16 eV s
 
Physico-Chemical Constants Planck Constant, Molar NA h
NA hc
3.990312689(30) × 10-10 J s mol-1
0.11962656492(91) J m mol-1
 
Universal Constants Planck Length ħ/mPc = (ħG/c3)1/2 lP 1.6160(12) × 10-35 m
 
Universal Constants Planck Mass (ħc/G)1/2 mP 2.1767(16) × 10-8 kg
 
Universal Constants Planck Time lP/c = (ħG/c5)1/2 tP 5.3906(40) × 10-44 s
 
General Mathematical Constants Porter's Constant C 1.4670780794 
Click for More Info on Porter's Constant
Units of Force Pounds per Acre lb acre-1 0.112 g m-2
 
Units of Force Pounds per Foot lb ft-1 1.488 kg m-1
 
Units of Force Pounds per Inch lb in-1 17.85 kg m-1
 
Units of Force Pounds per Square Foot lb ft-2 4.882 × 103 g m-2
 
Units of Force Pounds per Square Inch lb in-2 7.03 × 105 g m-2
 
Units of Force Pounds per Yard lb yd-1 0.496 kg m-1
 
Pressure, Atmospheric 1.01325 × 105 N m-2
1.01325 bar
14.7 lbf in-2
Click for More Info on Pressure, Atmospheric
Proton Particle Constants Proton Charge to Mass Quotient e/mp 9.57883408(38) × 107 C kg-1
 
Proton Particle Constants Proton Compton Wavelength h/mpc λC,p 1.321409847(10) × 10-15 m
Click for More Info on Proton Compton Wavelength h/m<sub>p</sub>c
Proton Particle Constants Proton g-Factor 2µpN gp 5.585694675(57) 
 
Proton Particle Constants Proton Gyromagnetic Ratio 2µp γp
γp/2π
2.67522212(11) × 108 s-1 T-1
42.5774825(18) MHz T-1
 
Proton Particle Constants Proton Magnetic Moment µp
µpB
µpN
1.410606633(58) × 10-26 J T-1
1.521032203(15) × 10-3 
2.792847337(29) 
 
Proton Particle Constants Proton Magnetic Moment, Shielded (H2O, sphere, 25°C) µ'p
µ'pB
µ'pN
1.410570399(59) × 10-26 J T-1
1.520993132(16) × 10-3 
2.792775597(31) 
 
Proton Particle Constants Proton Magnetic Shielding Correction 1- µ'pp (H2O, sphere, 25°C) σ'p 25.687(15) × 10-6 
 
Proton Particle Constants Proton Mass mp 1.67262158(13) × 10-27 kg
1.00727646688(13) u
1.50327731(12) × 10-10 J
 
Proton Particle Constants Proton Molar Mass NAmp M(p)
Mp
1.00727646688(13) × 10-3 kg mol-1
 
Proton Particle Constants Proton-Electron Mass Ratio mp/me 1836.1526675(39) 
 
Proton Particle Constants Proton-Muon Mass Ratio mp/mµ 8.88024408(27) 
 
Proton Particle Constants Proton-Neutron Magnetic Moment Ratio µpn -1.45989805(34) 
 
Proton Particle Constants Proton-Neutron Mass Ratio mp/mn 0.99862347855(58) 
 
Proton Particle Constants Proton-Tau Mass Ratio mp/mτ 0.527994(86) 
 
General Mathematical Constants Pythagoras' Constant 1.4142135624 
Click for More Info on Pythagoras' Constant

Nn | Oo | Pp | Qq
To the top | To the bottom
A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

Horizontal Line

Qq
  Name Symbol Value  
Quantized Hall Conductance e2/h 3.87404614 × 10-5 S
 
Quantized Hall Resistance RH 25812.8056 Ω
 
General Atomic and Nuclear Constants Quantum of Circulation h/2me
h/me
3.636947516(27) × 10-4 m2 s-1
7.273895032(53) × 10-4 m2 s-1
 
Electromagnetic Constants Quantum, Conductance 2e2/h G0 7.748091696(28) × 10-5 S
 
Electromagnetic Constants Quantum, Inverse Conductance G0-1 12906.403786(47) Ω
 
Electromagnetic Constants Quantum, Magnetic Flux Φ0 2.067833636(81) × 10-15 Wb
 

Nn | Oo | Pp | Qq
To the top | To the bottom
A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

Horizontal Line



Page compiled: Wed Sep 05 18:37:52 GMT+01:00 2001