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单词 fundamental constants
释义 fundamental constants(universal constants)
Those parameters that do not change throughout the universe. The charge on an electron, the speed of light in free space, the Planck constant, the gravitational constant, the electric constant, and the magnetic constant are all thought to be examples.
ConstantSymbolValue in SI units
acceleration of free fallg9.806 65m s-2
Avogadro constantL, NA6.022 1367(36) × 1023 mol-1
Boltzmann constantk = R/NA1.380 658(12) × 10-23 J K-1
electric constantε08.854 187 817 × 10-12 F m-1
electronic chargee1.602 177 33(49) × 10-19 C
electronic rest massme9.109 3897(54) × 10-31 kg
Faraday constantF9.648 5309(29) × 104 C mol-1
gas constantR8.314 510(70) J K-1 mol-1
gravitational constantG6.672 59(85) × 10-11 m3 kg-1 s-2
Loschmidt's constantNL2.686 763(23) × 1025 m-3
magnetic constantµ04 π × 10-7 H m-1
neutron rest massmn1.674 9286(10) × 10-27 kg
Planck constanth6.626 0755(40) × 10-34 J s
proton rest massmp1.672 6231(10) × 10-27 kg
speed of lightc2.997 924 58 × 108 m s-1
Stefan-Boltzmann constantσ5.670 51(19) × 10-8 W m-2 K-4
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更新时间:2025/6/23 14:48:28