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Helpful Constants

A global leader in smart power industrial device technologies. Meeting the global grand-challenges for our customers

A global leader in smart power industrial device technologies.  Meeting the grand global challenges for our customers.

Energy ConversionkJ mol-1kcal mol-1eVcm-1
kJ mol-110.239011.0364×10-283.59
kcal mol-14.18414.3363×10-2349.75
eV96.48523.06118065.5
cm-11.1963×10-22.8591×10-31.2398×10-41

wavenumber wavelength and frequency chart

wavenumber wavelength and frequency chart

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Universal ConstantUnits and Value
h (Planck’s constant)6.626075 *10-34 J s
kB (Boltzmann’s constant)1.38065 *10-23 J K-1
NA (Avogadro’s number)6.022136 *1023 mol-1
c (speed of light)2.9979245 *108 m s-1
ao (Bohr radius)5.2917724 *10-11 m
e (charge of an electron)1.6021773 *10-19 Coulomb