2024年5月16日发(作者：向成文)
Preface
National Institute of standards and Technology, Gaithersburg, MD 20899-8401
Fundamental Physical Constants: 1998
Peter J. Mohr and Barry N. Taylor
This table gives the 1998 self-consistent set of values of the basic constants and
conversion factors of physics and chemistry recommended by the Committee on
Data for Science and Technology (CODATA) for international use. Further, it
describes in detail the adjustment of the values of the subset of constants on which
the complete 1998 set of recommended values is based. The 1998 set replaces its
immediate predecessor recommended by CODATA in 1986. The new adjustment,
which takes into account all of the data available through 31 December 1998, is a
significant advance over its 1986 counterpart. The 1998 adjustment was carried
out by P. J. Mohr and B. N. Taylor of the National Institute of Standards and
Technology (NIST) under the auspices of the CODATA Task Group on
Fundamental Constants. The standard uncertainties (i.e., estimated standard
deviations) of the new recommended values are in most cases about 1/5 to 1/12
and in some cases 1/160 times the standard uncertainties of the corresponding
1986 values. Moreover, in almost all cases the absolute values of the differences
between the 1998 values and the corresponding 1986 values are less than twice
the standard uncertainties of the 1986 values.
The Task Group was established in 1969 with the aim of periodically providing
the scientific and technological communities with a self-consistent set of
internationally recommended values of the fundamental physical constants based
on all applicable information available at a given point in time. The first set was
published in 1973 and was followed by a revised set first published in 1986; the
current 1998 set first appeared in 1999. In the future, the CODATA Task Group
plans to take advantage of the high level of automation developed for the current
set in order to issue a new set of recommended values at least every four years.
FundamentalPhysicalConstants—AtomicandNuclearConstants
QuantitySymbolValueUnit
Relativestd.
uncert.u
r
2024年5月16日发(作者：向成文)
Preface
National Institute of standards and Technology, Gaithersburg, MD 20899-8401
Fundamental Physical Constants: 1998
Peter J. Mohr and Barry N. Taylor
This table gives the 1998 self-consistent set of values of the basic constants and
conversion factors of physics and chemistry recommended by the Committee on
Data for Science and Technology (CODATA) for international use. Further, it
describes in detail the adjustment of the values of the subset of constants on which
the complete 1998 set of recommended values is based. The 1998 set replaces its
immediate predecessor recommended by CODATA in 1986. The new adjustment,
which takes into account all of the data available through 31 December 1998, is a
significant advance over its 1986 counterpart. The 1998 adjustment was carried
out by P. J. Mohr and B. N. Taylor of the National Institute of Standards and
Technology (NIST) under the auspices of the CODATA Task Group on
Fundamental Constants. The standard uncertainties (i.e., estimated standard
deviations) of the new recommended values are in most cases about 1/5 to 1/12
and in some cases 1/160 times the standard uncertainties of the corresponding
1986 values. Moreover, in almost all cases the absolute values of the differences
between the 1998 values and the corresponding 1986 values are less than twice
the standard uncertainties of the 1986 values.
The Task Group was established in 1969 with the aim of periodically providing
the scientific and technological communities with a self-consistent set of
internationally recommended values of the fundamental physical constants based
on all applicable information available at a given point in time. The first set was
published in 1973 and was followed by a revised set first published in 1986; the
current 1998 set first appeared in 1999. In the future, the CODATA Task Group
plans to take advantage of the high level of automation developed for the current
set in order to issue a new set of recommended values at least every four years.
FundamentalPhysicalConstants—AtomicandNuclearConstants
QuantitySymbolValueUnit
Relativestd.
uncert.u
r