SkipCaptcha
1,279
edits
Changes
Jump to navigation
Jump to search
Line 4:
Line 4: − + + Line 15:
Line 16: − + Line 22:
Line 23: − + Line 29:
Line 30: − + Line 36:
Line 37: − + Line 43:
Line 44: − + Line 50:
Line 51: − + Line 57:
Line 58: − + Line 64:
Line 65: − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Added some more constants and converted units to latex to avoid wrapping problems
The number in brackets represents the uncertainty in the constant, so that <math>6.626070040(81) \times 10^{-34}</math> has an uncertainty of <math>0.00000000081 \times 10^{-34}</math>.
The number in brackets represents the uncertainty in the constant, so that <math>6.626070040(81) \times 10^{-34}</math> has an uncertainty of <math>0.00000000081 \times 10^{-34}</math>.
{| class="wikitable"
{| class="wikitable" style="background: white"
|-
|-
!Name
!Name
|[[Planck's constant]]
|[[Planck's constant]]
|<math>h</math>
|<math>h</math>
|<math>6.626070040(81) \times 10^{-34} \,</math> J s
|<math>6.626070040(81) \times 10^{-34} \, \mathrm{J} \, \mathrm{s}</math>
|It relates the [[frequency]] of a [[photon]] to its [[energy]]
|It relates the [[frequency]] of a [[photon]] to its [[energy]]
|[[Quantum mechanics]]
|[[Quantum mechanics]]
|[[Speed of light]]
|[[Speed of light]]
|<math>c</math>
|<math>c</math>
|299,792,458 m s<sup>-1</sup>
|<math>299,792,458 \, \mathrm{m} \, \mathrm{s^{-1}}</math>
|This is the speed of light in a [[vacuum]]
|This is the speed of light in a [[vacuum]]
|Most of physics, such as [[optics]] and [[relativity]]
|Most of physics, such as [[optics]] and [[relativity]]
|Permittivity of free space
|Permittivity of free space
|<math>\epsilon_0</math>
|<math>\epsilon_0</math>
|<math>8.854187817... \times 10^{-12}</math> F m<sup>-1</sup>
|<math>8.854187817... \times 10^{-12} \, \mathrm{F} \, \mathrm{m^{-1}}</math>
|Related to the strength of an [[electric field]] produced by a charge
|Related to the strength of an [[electric field]] produced by a charge
|[[Electromagnetism]]
|[[Electromagnetism]]
|Permeability of free space
|Permeability of free space
|<math>\mu_0</math>
|<math>\mu_0</math>
|<math>4 \pi \times 10^{-7}</math>
|<math>4 \pi \times 10^{-7} \, \mathrm{H} \, \mathrm{m^{-1}}</math>
|Related to the strength of [[magnetic field]s produced by a [[current]]
|Related to the strength of [[magnetic field]s produced by a [[current]]
|[[Electromagnetism]]
|[[Electromagnetism]]
|Elementary charge
|Elementary charge
|<math>e</math>
|<math>e</math>
|<math>1.6021766208(98) \times 10^{-19}</math> C
|<math>1.6021766208(98) \times 10^{-19} \, \mathrm{C}</math>
|The magnitude of the electric charge on an electron
|The magnitude of the electric charge on an electron
|Determines the strength of electric and magnetic fields produced by [[proton]]s, [[electron]]s etc
|Determines the strength of electric and magnetic fields produced by [[proton]]s, [[electron]]s etc
|[[Avogadro's number]]
|[[Avogadro's number]]
|<math>N_A</math>
|<math>N_A</math>
|<math>6.022140857(74) \times 10^{23}</math> mol<sup>-1</sup>
|<math>6.022140857(74) \times 10^{23} \, \mathrm{mol^{-1}}</math>
|The number of constituents in 1 mole of something
|The number of constituents in 1 mole of something
|[[Chemistry]], [[statistical mechanics]], [[thermodynamics]]
|[[Chemistry]], [[statistical mechanics]], [[thermodynamics]]
|Ideal gas constant
|Ideal gas constant
|<math>R</math>
|<math>R</math>
|<math>8.3144598(48)</math> J mol<sup>-1</sup> K<sup>-1</sup>
|<math>8.3144598(48) \, \mathrm{J} \, \mathrm{mol^{-1}} \, \mathrm{K^{-1}}</math>
|Relates the [[pressure]], [[volume]], [[temperature]] and number of moles of an [[ideal gas]]
|Relates the [[pressure]], [[volume]], [[temperature]] and number of moles of an [[ideal gas]]
|[[Thermodynamics]]
|[[Thermodynamics]]
|Faraday Constant
|Faraday Constant
|<math>F</math>
|<math>F</math>
|<math>96485 C/mol^-1</math>
|<math>96485 \mathrm{C} \, \mathrm{mol^{-1}}</math>
|The electric charge on one mole of electrons (Avogadro's number times elementary charge)
|The electric charge on one mole of electrons (Avogadro's number times elementary charge)
|[[Chemistry]], [[physics]]
|[[Chemistry]], [[physics]]
|Inexact<ref>http://ch302.cm.utexas.edu/echem/echem-stoich/echem-stoich-all.php</ref>
|Inexact<ref>http://ch302.cm.utexas.edu/echem/echem-stoich/echem-stoich-all.php</ref>
|-
|[[Gravitational constant]]
|<math>G</math>
|<math>6.67408(31) \times 10^{-11} \, \mathrm{N} \, \mathrm{m^2} \, \mathrm{kg^{-2}}</math>
|Constant related to the strength of Newtonian gravity
|Newtonian [[gravity]]
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?bg</ref>
|-
|Boltzmann constant
|<math>k</math>
|<math>1.38064852(79) \times 10^{-23} \, \mathrm{J} \, \mathrm{K^{-1}}</math>
|[[Thermodynamics]]
|
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?k</ref>
|-
|Reduced Planck's constant
|<math>\hbar</math>
|<math>1.054571800(13) \times 10^{-34} \, \mathrm{J} \, \mathrm{s}</math>
|[[Quantum mechanics]]
|It is [[Planck's constant]] divided by <math>2 \pi</math>.
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?hbar</ref>
|-
|Wien displacement constant
|<math>b</math>
|<math>2.8977729(17) \times 10^{-3} \, \mathrm{m} \, \mathrm{K}</math>
|Relates the [[temperature]] of a black body to the peak in its spectrum
|
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?bwien</ref>
|-
|[[Gravitational constant|Standard acceleration due to gravity]]
|<math>g</math>
|<math>9.80665 \, \mathrm{m} \, \mathrm{s^{-2}}</math>
|This is the [[acceleration]] of any object near to the earth's surface when [[gravity]] is the only force acting (ie, no air resistance).
|[[Mechanics]]
|Exact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?gn</ref>
|-
|Proton mass
|<math>m_p</math>
|<math>1.672621898(21) \times 10^{-27} \, \mathrm{kg}</math>
|[[Rest mass]] of a [[proton]]
|
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?mp</ref>
|-
|Neutron mass
|<math>m_n</math>
|<math>1.674927471(21) \times 10^{-27} \, \mathrm{kg}</math>
|[[Rest mass]] of a [[neutron]]
|
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?mn</ref>
|-
|Electron mass
|<math>m_e</math>
|<math>9.10938356(11) \times 10^{-31} \, \mathrm{kg}</math>
|[[Rest mass]] of an [[electron]]
|
|Inexact<ref>http://physics.nist.gov/cgi-bin/cuu/Value?me</ref>
|}
|}