Spectroscopic constants are available in convenient and useful 'lab units' (feature "const lab")
In this menu you can select from a list of important fundamental constants, given in convenient lab units. The following constants are given in convenient 'lab units':
- h: Planck's constant in meV*ps; e.g. for calculating energetic level distances in beat spectroscopy
- hbar: h/2/Pi
- c0: vacuum speed of light in mm/ns; e.g. for calculating optical delay lines
- c0*h: photon energy * vacuum wavelength; for calculating energy from wavelength and vice versa
- c0*h/airIndex: photon energy * wavelength in air; the refractive index of air
(about 1.000277 @ 600nm, 15°C, from Schott glass catalog) has to be considered if the wavelength is retrieved from a spectrometer in air atmosphere - kB: Boltzmann constant; e.g. for calculating activation energies
- me,mp,mn: energy equivalents for masses of elementary particles
