Tcaep logo
science maths astronomy Contact about
sponsored by the Institute of Physics
Constants
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
Equations
Conversions
SI Units
Symbols
Print version

Science

Constants - M

Mm
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

  Mm  
    Name Symbol Value  
           
  Madelung's Constant Madelung's Constant M2 −1.615 542 6267  
           
  Magnetic Constant or Permeability of free space Magnetic Constant
Permeability of free space		 μ0 4π × 10 −7  N A −2  
        12.566 370 614 × 10−7  N A−2  
           
  Magnetic Flux Quantum Magnetic Flux Quantum Φ0 2.067833636 ± 0.000 000 081 × 10−15  Wb  
           
  Magnetic Moment Anomaly, Electron Magnetic Moment Anomaly, Electron ae 1.159 652 1869 ± 0.000 000 0041 × 10−3  
           
  Magnetic Moment Anomaly, Muon Magnetic Moment Anomaly, Muon aμ 1.165 916 02 ± 0.000 000 64 × 10−3  
           
  Magnetic Moment Ratio, Deuteron-Electron Magnetic Moment Ratio, Deuteron-Electron μd/μe 0.466 434 5460 ± 0.000 000 0091 × 10−3  
           
  Magnetic Moment Ratio, Deuteron-Proton Magnetic Moment Ratio, Deuteron-Proton μd/μp 0.307 012 2035 ± 0.000 000 0051  
           
  Magnetic Moment Ratio, Electron to Shielded Helion (gas, sphere, 25 degrees C Magnetic Moment Ratio, Electron to Shielded Helion (gas, sphere, 25°C) μe/μ'h 864.058 255 ± 0.000 010  
           
  Magnetic Moment Ratio, Electron to Shielded Proton (Hof 2 O, sphere, 25 degrees C) Magnetic Moment Ratio, Electron to Shielded Proton (H2O, sphere, 25°C) μe/μ'p −658.227 5954 ± 0.000 0071  
           
  Magnetic Moment Ratio, Electron-Deuteron Magnetic Moment Ratio, Electron-Deuteron μe/μd −2143.923 498 ± 0.000 023  
           
  Magnetic Moment Ratio, Electron-Muon Magnetic Moment Ratio, Electron-Muon μe/μμ 206.766 9720 ± 0.000 0063
  
           
  Magnetic Moment Ratio, Electron-Neutron Magnetic Moment Ratio, Electron-Neutron μe/μn 960.920 50 ± 0.000 23  
           
  Magnetic Moment Ratio, Electron-Proton Magnetic Moment Ratio, Electron-Proton μe/μp −658.210 6875 ± 0.000 0066  
           
  Magnetic Moment Ratio, Muon-Proton Magnetic Moment Ratio, Muon-Proton μμ/μp −3.183 345 39 ± 0.000 000 10  
           
  Magnetic Moment Ratio, Neutron to Shielded Proton H of 2, sphere, 25 degrees C Magnetic Moment Ratio, Neutron to Shielded Proton (H2O, sphere, 25°C) μμ/μ'p − 0.684 996 94 ± 0.000 000 16 
 
           
  Magnetic Moment Ratio, Neutron-Electron Magnetic Moment Ratio, Neutron-Electron μn/μe 1.040 668 82 ± 0.000 000 25 × 10−3  
           
  Magnetic Moment Ratio, Neutron-Proton Magnetic Moment Ratio, Neutron-Proton μn/μp −0.684 979 34 ± 0.000 000 16  
           
  Magnetic Moment Ratio, Proton-Neutron Magnetic Moment Ratio, Proton-Neutron μp/μn −1.459 898 05 ± 0.000 000 34  
           
  Magnetic Moment, Deuteron Magnetic Moment, Deuteron μd −928.476 362 ± 0.000 037 × 10−26 J T−1  
        0.466 975 4479 × 10−3  µB  
        0.857 438 230 ± 0.000 000 024 µN  
           
  Magnetic Moment, Electron Magnetic Moment, Electron μe −928.476 362 ± 0.000 037 × 10−26 J T−1  
      μe/μB −1.001 159 652 1869 ± 0.000 000 000 0041  
      μe/μN −1838.2819660 ± 0.000 0039  
           
  Magnetic Moment, Muon Magnetic Moment, Muon μμ −4.490 448 13 ± 0.000 000 22 × 10−26 J T−1  
      μμμB −4.84197085 ± 0.000 000 15 × 10−3  
      μμμN −8.890 597 70 ± 0.000 000 27  
           
  Magnetic Moment, Neutron Magnetic Moment, Neutron μn −0.966 236 40 ± 0.000 000 23 × 10−26 J T−1  
      μn/μB −1.041 875 63 ± 0.000 000 25 × 10−3  
      μn/μN −1.913 042 72 ± 0.000 000 45  
           
  Magnetic Moment, Proton Magnetic Moment, Proton μp 1.410 606 633 ± 0.000 000 058 × 10 -26  J T−1
  
      μp/μB 1.521 032 203 ± 0.000 000 015 × 10−3  
      μp/μN 2.792 847 337 ± 0.000 000 029  
           
  Magneton, Bohr Magneton, Bohr μB 9.274 008 99 ± 0.000 000 37 × 10−24 J T−1  
        5.788 381 749 ± 0.000 000 043 × 10−5 eV T−1  
        1.399 624 624 ± 0.000 000 056 × 1010 Hz T−1  
           
  Magneton, Nuclear Magneton, Nuclear μn 5.050 783 17 ± 0.000 000 20 × 10−27 J T−1  
      μN/h 3.152 454 1238 ± 0.000 000 0024 × 10−8 eV T−1
7.622 593 96 ± 0.000 000 31 MHz T−1
  
           
           
    Magnum   2 standard wine bottles
0.5 jeroboam 		 
           
  Mass Ratio, Deuteron-Electron Rest Mass Ratio, Deuteron-Electron Rest md/me 3670.483 014 ± 0.000 075  
           
  Mass Ratio, Deuteron-Proton Rest Mass Ratio, Deuteron-Proton Rest md/mp 1.999 007 496 ± 0.000 000 006  
           
  Mass Ratio, electron-alpha-particle Mass Ratio, Electron-α-Particle md/mα 1.370 933 5611 ± 0.000 000 0029 × 10−4  
           
  Mass Ratio, Electron-Deuteron Mass Ratio, Electron-Deuteron me/md 2.724 437 1170 ± 0.000 000 0058 × 10−4  
           
  Mass Ratio, Electron-Muon Mass Ratio, Electron-Muon me/mμ 4.836 332 10 ± 0.000 000 15 × 10−3  
           
  Mass Ratio, Electron-Neutron Mass Ratio, Electron-Neutron me/mn 5.438 673 462 ± 0.000 000 012 × 10−4  
           
  Mass ratio, Electron-Proton Mass Ratio, Electron-Proton me/mp 5.446 170 232 ± 0.000 000 012 × 10−4  
           
  Mass Ratio, Electron-Tau Mass Ratio, Electron-Tau mμ/mτ 2.875 55 ± 0.000 47 × 10−4  
           
  Mass Ratio, Muon-Electron Mass Ratio, Muon-Electron mμ/me 206.768 2657 ± 0.000 0063  
           
  Mass Ratio, Muon-Neutron Mass Ratio, Muon-Neutron mμ/mn 0.112 454 5079 ± 0.000 000 0034  
           
  Mass Ratio, Muon Mass Ratio, Muon-Proton mμ/mp 0.112 609 5173 ± 0.000 000 0034  
           
  Mass Ratio, Muon-Tau Mass Ratio, Muon-Tau mμ/mτ 5.945 72 ± 0.000 97 × 10−2  
           
  Mass Ratio, Neutron-Electron Mass Ratio, Neutron-Electron mn/me 1.838 683 6550 ± 0.000 000 0040  
           
  Mass Ratio, Neutron-Muon Mass Ratio, Neutron-Muon mn/mμ 8.892 484 78 ± 0.000 000 27
  
           
  Mass Ratio, Neutron-Proton Mass Ratio, Neutron-Proton mn/mp 1.001 378 418 87 ± 0.000 000 000 58  
           
  Mass Ratio, Neutron-Tau Mass Ratio, Neutron-Tau mn/mτ 0.528 722 ± 0.000 086  
   
  Mass Ratio, Proton-Electron Mass Ratio, Proton-Electron mp/me 1836.152 6675 ± 0.000 0039  
   
  Mass Ratio, Proton-Muon Mass Ratio, Proton-Muon mp/mμ 8.880 244 08 ± 0.000 000 27  
   
  Mass Ratio, Proton-Neutron Mass Ratio, Proton-Neutron mp/mn 0.998 623 478 55 ± 0.000 000 000 58  
   
  Mass Ratio, Proton-Tau Mass Ratio, Proton-Tau mp/mτ 0.527 994 ± 0.000 086  
   
  Mass Ratio, Tau-Electron Mass Ratio, Tau-Electron mτ/me 3.477 60 ± 0.000 57  
   
  Mass Ratio, Tau-Muon Mass Ratio, Tau-Muon mτ/mμ 16.8188 ± 0.0027  
   
  Mass Ratio, Tau-Neutron Mass Ratio, Tau-Neutron mτ/mn 1.891 35 ± 0.000 31  
   
  Mass Ratio, Tau-Proton Mass Ratio, Tau-Proton mτ/mp 1.893 96 ± 0.000 31  
   
  Deuteron values Mass, Deuteron Rest md 3.343 5860 ± 0.000 0020 × 10−27 kg  
  2.013 553 214 ± 0.000 000 024 u
  
  1875.613 39 ± 0.000 57 MeV c−2
  
   
  Mass of the Earth Mass of the Earth M 5.972 × 1024 kg  
       
  Mass of the Moon   7.3483 × 1022 kg  
       
  Mass of the Sun  

1.9891 × 1030 kg

  
       
  Mean density of the Earth   5515 kg m−3  
       
  Mean density of the Moon   3340 kg m−3  
       
  Mean density of the Sun   1409 kg m−3  
   
  electron value Mass, Electron me 9.109 381 88 ± 0.000 000 72 × 10−31  kg
 
  5.485 799 110 ± 0.000 000 012 × 10−4  u
 
  0.510 998 902 ± 0.000 000 021 MeV  
   
  Moun value Mass, Muon mμ 1.883 531 09 ± 0.000 000 16 × 10−28  kg
  
  0.113 428 9168 ± 0.000 000 0034 u
  
  105.658 3568 ± 0.000 0052 MeV  
   
  Mass, Neutron Mass, Neutron mn 1.674 927 16 ± 0.000 000 13 × 10−27  kg
 
  1.008 664 915 78 ± 0.000 000 000 55  u  
  1.505 349 46 ± 0.000 000 12 × 10−10  J  
   
  Mass, Planck Mass, Planck (ħc/G)1/2 mp 2.1767 ± 0013 × 10−8  kg  
   
  Mass, Proton Mass, Proton mp 1.672 621 58 ± 0.000 000 13 × 10 -27  kg  
  1.007 276 466 88 ± 0.000 000 000 13 u  
  1.503 277 31 ± 0.000 000 31 × 10 -10  J  
   
  Mass, Sun's Mass, Sun's   1.99 × 1030 kg  
   
  Mass, Tau Mass, Tau mτ 3.167 88 ± 0.000 82 × 10−27  kg
 
  1.907 74 ± 0.000 31 u  
         
  Mean equitorial radius of the Earth Mean Radius of the Earth 6.378 140 ×106 m  
       
  Mean radius of the Earth   6.3710 × 106 m  
       
  Mean Earth-Moon distance   3.844 × 108 m  
       
  Metric mile   1.5 × 103 m  
   
  Mile or Statute Mile Mile
Statute Mile		 Mile 1609.344  × 103 m
 
   
  Mile, Square Mile, Square 2.589 × 106  m2
  
   
  Million Electronvolts MeV 1.6 × 10−13  J
 
   
  Mills' Constant Mills' Constant 1.306 377 8838  
       
  Minim (UK)   0.016 66 fl dr
5.919 385 416 × 10−8 m3		  
       
  Minim (US)   0.016 66 fl dr (US)
6.161 145 833 × 10−8 m3		  
       
  Minute min 60 s  
   
  Molar Gas Constant Molar Gas Constant R 8.314 472 ± 0.000 015 J mol−1  K−1
  
       
  Molar Mass Constant Mu 10−3 kg mol−1  
   
  Molar Mass, deuteron Molar Mass, Deuteron Md 2.013 553 214 ± 0.000 000 024 u  
   
  Molar Mass, Electron Molar Mass, Electron M(e) 5.485 799 110 ± 0.000 000 012 × 10−7  kg mol−1  
  Me  
   
  Molar Mass, Muon Molar Mass, Muon M(µ) 0.113 428 9168 ± 0.000 000 0034 × 10−3  kg mol−1  
  Mµ  
   
  Molar Mass, neutron N Molar Mass, Neutron NAmn M(n) 1.008 664 915 78 ± 0.000 000 000 55 × 10−3  kg mol−1  
  Mn  
   
  Molar Mass, Proton N Molar Mass, Proton NAmp M(p) 1.007 276 466 88 ± 0.000 000 000 13 × 10−3  kg mol−1  
  Mp  
   
  Molar Mass, Tau-N Molar Mass, Tau NAmt M(t) 1.907 74 ± 0.000 31 × 10−3  kg mol−1  
  Mt  
   
  Molar Planck Constant Molar Planck Constant NA h 3.990 312 689 ± 0.000 000 030 × 10−10  J s mol−1  
  NA hc 0.119 626 564 92 ± 0.000 000 000 91 J m mol−1  
   
  Molar Volume (Ideal Gas) (T=273.15 K, p=101.325 kPa) Molar Volume (Ideal Gas) (T=273.15 K, p=101.325 kPa) Vm 22.413 996 ± 0.000 039 × 10−3  m3  mol−1  
   
  Moon's Gravitational Acceleration Moon's Gravitational Acceleration 1.619 m s−2  
   
  Moon's Mean Density Moon's Mean Density 3.33 × 103  kg m−3  
   
  Moon's Mean Distance from Earth Moon's Mean Distance from Earth 3.844 × 108 m  
   
  Moon's Mean Mass Moon's Mean Mass 7.33 × 1022  kg  
   
  Moon's Mean Radius Moon's Mean Radius 1.738 × 106 m  
   
  Muon Compton Wavelength Muon Compton Wavelength λC,μ 11.734 441 97 ± 0.000 000 35 × 10−15  m  
 
  Muon g-Factor Muon g-Factor gµ −2.002 331 8320 ± 0.000 000 0013   
   
  Muon Magnetic Moment Muon Magnetic Moment µµ −4.490 448 13 ± 0.000 000 22 × 10−26  J T−1
 
  µµ/µB −4.841 970 85 ± 0.000 000 15 × 10−3  
  µµ/µN −8.890 597 70 ± 0.000 000 27  
   
  Muon Magnetic Moment Anomaly Muon Magnetic Moment Anomaly aµ 1.165 916 02 ±  0.000 000 64 × 10−3  
   
  Muon Mass Muon Mass mµ 1.883 531 09 ± 0.000 000 16 × 10−28 kg
0.113 428 9168 ± 0.000 000 0034 u
1.692 833 32 ± 0.000 000 14 × 10−11 J/ c2
105.658 3568 ± 0.000 0052 MeV/ c2 		 
     
  Muon Molar Mass Muon Molar Mass M(µ) 0.113 428 9168 ± 0.000 000 0034 × 10−3  kg mol−1  
  Mµ  
   
  Muon-Electron Mass Ratio Muon-Electron Mass Ratio mµ/me 206.768 2657 ± 0.000 0063  
   
  Muon-Neutron Mass Ratio Muon-Neutron Mass Ratio mµ/mn 0.112 454 5079 ± 0.000 000 0034
  
   
  Muon-Proton Magnetic Moment Ratio Muon-Proton Magnetic Moment Ratio μμ/μp −3.183 345 39 ± 0.000 000 10  
   
  Muon-Proton Mass Ratio Muon-Proton Mass Ratio mμ/mp 0.112 609 5173 ± 0.000 000 0034  
   
  Muon-Tau Mass Ratio Muon-Tau Mass Ratio mμ/mτ 5.945 72 ± 0.000 97 × 10−2  
           
  Mm
To the top
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

 
 

|| H O M E  || : || S C I E N C E  || : || M A T H S  || :  || A S T R O N O M Y  || : || S E A R C H ||
|| Download || : || Contact  || : || About  ||

Developed By
 DOMEX E-DATA PVT. LTD.,