RTO care

Physical Constants and Conversions

   

   

   

Basic

  • Speed of light in vacuum c = 2.997 924 580 e8 m/s (exact)
  • Planck's constant
    • h = 6.6260755e-34 J-s
    • h = 4.136e-15 eV-s
    • hbar = h/2\pi = 1.05457266e-34 J-s
    • hbar = 6.57e-16 eV-s
  • electron charge q = 1.60217733e19 coulomb
  • Gravitational Constant G 6.7259e-11 N m**2/kg**2
  • Boltzmann's constant
    • k = 1.380658e-23 J/K
    • k = 8.617e-5 eV/K
  • Stephan-Boltzmann constant \sigma = 5.67051e-8 W/m**2/K**4

   

   

   

   

Electrical

  • Permittivity of free space
    • \epsilon = 8.854e-12 F/m = 1/c**2\mu
    • \epsilon = 55.3 e/V-micron
  • Permeability of free space \mu = 4 \pi e-7 H/m or Tesla/ampere
  • Coulomb constant 8.988e9 N-m**2/coul**2
  • Wavelength of a 1eV photon 1.243e-6 m
  • thermal electron voltage (r.t.) kT/q = 25.86 mv
  • energy of electron (r.t.) kT = .02586 eV
  • energy (1 electron volt) 1 ev = 1.602e-19 J
  • Quantum Hall Resistance 25812.8056 ohms

   

   

   

Nuclear

  • Electron Rest Mass 9.1093897e-28 g
  • Proton Rest Mass 1.6726231e-24 g
  • Neutron Rest Mass 1.6749286e-24 g
  • Magnetic flux quantum (hc/2e) 2.06783461e-15 Wb
  • Quantum of circulation (h/2m_e) 3.63694807e-4 m**2/s
  • Specific Electron Charge -e/m_e - 1.75881962e11 Coul/kg
  • Electron Magnetic Moment \mu_e 9.2847701e-24 J/T
  • Bohr Magneton 9.2740154e-24 J/Tesla
  • Nuclear Magneton e h-bar/2m_p 5.0507866e-27 J/T
  • Proton Magnetic Moment \mu_p 1.41060761e-26 J/T

   

   

Chemistry/Thermo

  • Faraday Constant F 9.6485309e4 Coulombs/mole
  • Gas Constant R 8.314510 J/K/mole
  • energy (calories) 1 cal = 4.184 J
  • Bohr radius .529 angstrom
  • Avogadro's number 6.0221367e23 atoms/mole
  • Molar volume
    • at 273.15K 1e5 Pa 22.71108e-3 m**3/mole
    • at 273.15K 1 atm 22.41410e-3 m**3/mole
  • atomic mass unit 1.6605402e-24 g

   

   

   

Pressures

  • Standard pressure (1 atm) 1.01325e5 Pa (Newton/m**2)
  • 1 Torr = 1 mm Hg = 133.3 N/m**2 = 133.3 Pa
  • 1 psi = 6.89e3 Pa

   

   

   

   

Radioactivity

  • 1 Curie 3.7e10 counts/s

   

   

   

Astronomical Units

  • Solar Mass 1.989e33 g
  • Solar Radius 6.9599e10 cm
  • Solar luminosity 3.826e33 ergs/s
  • Gravity at solar surface 2.74e4 cm/s**2
  • Earth mass 5.976e27 g
  • Earth equatorial radius 6378.164 km
  • Gravity at earth's surface 980.665 cm/s**2
  • Astronomical Unit 1.4959780e13 cm
  • Solar effective temperature 5800K
  • Solar magnitude -26.73
  • Solar constant (1976) .1353 W/cm**2
  • Julian century 36525 ephemeris days
  • Tropical year (1900.0) 365.242 days
  • Tropical year (1900.0) 3.1557e7 ephemeris seconds
  • Ephemeris Day 86400 ephemeris seconds
  • solar motion velocity 19.7 km/s
  • Julian date for 1 Jan 1981: 2444605.5 days
  • parsec 3.261633 light years
  • parsec 3.085678e18 cm
  • light year 9.460530e17 cm
  • Xu 1.00208e-11 cm
  • flux unit = Jansky = 1e-26 W/m**2/Hz
  • Hubble constant 100 km/s/Mpc

   

   

   

Optical Constants

  • 1 candle = 1 lumen/steradian
  • 1 candle/m**2 = 3.142e-4 lambert
  • 1 lambert = 2.054 candles/in**2
  • 1 lux = 1 meter-candle
  • 1 lux = .0929 foot-candle
  • 1 lumen = 1 candle into an angle of 1 steradian
  • 1 lumen = .001495 watts of light at 546 nm

   

Pasted from <http://chemeng.co.kr/site/bbs/board.php?bo_table=xstudy5&wr_id=6&page=&page=>

'상태와 변화' 카테고리의 다른 글

엔탈피  (0) 2016.10.24
Propane ...  (0) 2016.10.24
열전달해석  (0) 2016.10.24
열역학 기초  (0) 2016.10.24
무중력 상태에서 화염  (0) 2016.10.17