Konstant Tähis(ed Väärtus (SI ühikutes) Elektromagnetism Valguse kiirus vaakumis c 0 ≡ c {\displaystyle c_{\text{0}}\equiv c} 299 792 458 m s {\displaystyle 299\,792\,458\;\mathrm {\frac {m}{s}} } Magnetiline konstant μ 0 {\displaystyle \mu _{\text{0}}} 1 , 256 637 062 12 ( 19 ) × 10 − 6 N A 2 ≈ 4 π ⋅ 10 − 7 N A 2 {\displaystyle 1,256\,637\,062\,12(19)\times 10^{-6}{\frac {\mathrm {N} }{\mathrm {A} ^{2}}}\;\approx \;4\,\pi \cdot 10^{-7}{\frac {\mathrm {N} }{\mathrm {A} ^{2}}}} Elektriline konstant ε 0 = 1 μ 0 c 2 {\displaystyle \varepsilon _{0}={\frac {1}{\mu _{\text{0}}\,c^{2}}}} 8,854 187 8128 ( 13 ) ⋅ 10 − 12 F m ≈ 10 7 4 π ⋅ 299 792 458 2 A s V m {\displaystyle 8{,}854\ 187\,8128(13)\cdot 10^{-12}\,\mathrm {\frac {F}{m}} \approx {\frac {10^{7}}{4\,\pi \cdot 299\ 792\ 458^{2}}}\,\mathrm {\frac {A\,s}{V\,m}} } Elementaarlaeng e {\displaystyle e} e = 1,602 176 634 ⋅ 10 − 19 C {\displaystyle e=1{,}602\,176\,634\cdot 10^{-19}\;\mathrm {C} } (täpne väärtus)Gravitatsioon Gravitatsioonikonstant G {\displaystyle G} 6,674 30 ( 15 ) ⋅ 10 − 11 m 3 k g ⋅ s 2 {\displaystyle 6{,}674\,30(15)\cdot 10^{-11}\;\mathrm {\frac {m^{3}}{kg\cdot s^{2}}} } Termodünaamika Absoluutne nullpunkt T 0 {\displaystyle T_{\text{0}}} 0 K = − 273 , 15 ∘ C {\displaystyle 0\,\mathrm {K} ={-273{,}15\,}^{\circ }\mathrm {C} } Avogadro arv N A {\displaystyle N_{\text{A}}} , L {\displaystyle L} 6,022 140 76 ⋅ 10 23 1 m o l {\displaystyle 6{,}022\;140\;76\cdot 10^{23}\,{\frac {1}{\mathrm {mol} }}} (täpne väärtus)Boltzmanni konstant k B {\displaystyle k_{\text{B}}} 1,380 649 ⋅ 10 − 23 J K {\displaystyle 1{,}380\,649\cdot 10^{-23}\;\mathrm {\frac {J}{K}} } (täpne väärtus) Elektronvoltides kraadi kohta: 8,617 333262... ⋅ 10 − 5 e V K {\displaystyle 8{,}617\ 333262...\cdot 10^{-5}\,\mathrm {\frac {eV}{K}} }
Stefani-Boltzmanni konstant σ = 2 π 5 k B 4 15 h 3 c 2 {\displaystyle \sigma ={\frac {2\,\pi ^{5}\,k_{\text{B}}^{4}}{15\,h^{3}\,c^{2}}}} 5,670 374 419... ⋅ 10 − 8 W m 2 K 4 {\displaystyle 5{,}670\,374\,419...\cdot 10^{-8}\;\mathrm {\frac {W}{m^{2}\,K^{4}}} } Universaalne gaasikonstant R 0 = N A k B {\displaystyle R_{\text{0}}=N_{\text{A}}\,k_{\text{B}}} 8,314 462 618... J K ⋅ m o l {\displaystyle 8{,}314\,462\,618...\;\mathrm {\frac {J}{K\cdot mol}} } Osakestefüüsika Bohri raadius a 0 = 4 π ε 0 ℏ 2 e 2 m e {\displaystyle a_{\text{0}}={\frac {4\,\pi \,\varepsilon _{0}\,\hbar ^{2}}{e^{2}\,m_{\text{e}}}}} 5,291 772 109 03 ( 80 ) ⋅ 10 − 11 m {\displaystyle 5{,}291\,772\,109\,03(80)\cdot 10^{-11}\;\mathrm {m} } Plancki konstant h {\displaystyle h} 6,626 070 15 ⋅ 10 − 34 J s {\displaystyle 6{,}626\ 070\ 15\cdot 10^{-34}\,\mathrm {J\,s} } (täpne väärtus) Elektronvoltides: 4,135 667 662 ( 25 ) ⋅ 10 − 15 e V s {\displaystyle 4{,}135\ 667\ 662\ (25)\cdot 10^{-15}\;\mathrm {eV\,s} }
Elektroni mass m e {\displaystyle m_{e}} 9,109 383 7015 ( 28 ) ⋅ 10 − 31 k g {\displaystyle 9{,}109\,383\,7015(28)\cdot 10^{-31}\,\mathrm {kg} } Elektroni klassikaline raadius r e = 1 4 π ε 0 e 2 m e c 2 = a 0 a 2 {\displaystyle r_{\text{e}}={\frac {1}{4\,\pi \,\varepsilon _{0}}}\,{\frac {e^{2}}{m_{\text{e}}\,c^{2}}}=a_{0}a^{2}} 2,817 940 3262 ( 13 ) ⋅ 10 − 15 m {\displaystyle 2{,}817\,940\,3262\ (13)\cdot 10^{-15}\;\mathrm {m} } Elektroni magnetmoment μ e {\displaystyle \mu _{\text{e}}} − 9,284 764 7043 ( 28 ) ⋅ 10 − 24 J T {\displaystyle -9{,}284\ 764\,7043(28)\cdot 10^{-24}\;\mathrm {\frac {J}{T}} } Neutroni mass m n {\displaystyle m_{\text{n}}} 1,674 927 498 04 ( 95 ) ⋅ 10 − 27 k g {\displaystyle 1{,}674\,927\,498\,04(95)\cdot 10^{-27}\,\mathrm {kg} } = 1,008 664 915 88 ( 49 ) u {\displaystyle =1{,}008\ 664\ 915\ 88(49)\;\mathrm {u} } Neutroni magnetmoment μ n {\displaystyle \mu _{\text{n}}} − 9,662 , 3651 ( 23 ) 10 − 27 J T {\displaystyle -9{,}662\ ,3651(23)\ 10^{-27}\;\mathrm {\frac {J}{T}} } Prootoni mass m p {\displaystyle m_{\text{p}}} 1,672 621 , 923 69 ⋅ 10 − 27 k g {\displaystyle 1{,}672\,621\ ,923\,69\cdot 10^{-27}\,\mathrm {kg} } = 1,007 276 466 889 ( 91 ) u {\displaystyle =1{,}007\ 276\ 466\ 889\ (91)\;\mathrm {u} } Prootoni magnetmoment μ p {\displaystyle \mu _{\text{p}}} 1,410 606 797 36 ( 60 ) c d o t 10 − 26 J T {\displaystyle 1{,}410\ 606\ 797\,36(60)cdot10^{-26}\;\mathrm {\frac {J}{T}} } Muud Faraday konstant F = e N A {\displaystyle F={\frac {e}{N_{\text{A}}}}} 96 485,332 , 12... C m o l {\displaystyle 96\ 485{,}332\ ,12...\;\mathrm {\frac {C}{mol}} } Aatommassiühik m u ≡ amu ≡ u = 1 g N A {\displaystyle m_{\text{u}}\equiv {\text{amu}}\equiv u={\frac {1\,\mathrm {g} }{N_{\text{A}}}}} 1,660 539 066 60 ( 50 ) ⋅ 10 − 27 k g {\displaystyle 1{,}660\,539\,066\,60(50)\cdot 10^{-27}\;\mathrm {kg} }