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Rydberg constant
The
Rydberg constant
, symbol
R
8
for heavy atoms or
R
H
for hydrogen, named after the Swedish
physicist
Johannes Rydberg
, is a
physical constant
relating to atomic
spectra
, in the science of
spectroscopy
. The constant first arose as an empirical fitting parameter in the
Rydberg formula
for the
hydrogen spectral series
, but
Niels Bohr
later showed that its value could be calculated from more fundamental constants, explaining the relationship via his "
Bohr model
". As of 2012,
R
8
and electron spin
g-factor
are the most accurately measured
fundamental physical constants
.
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