13 ч 56 мин, 1 сент 1860 г. - A group of chemists assembled
at the First International
Congress of Chemists in
Karlsruhe, Germany to settle
the issue of atomic
mass as well as
some other matters that
were making communication difficult.
Stainslao Cannizzaro presented a
convincing method for accurately
measuring the relative masses
of atoms. His method
enabled chemists to agree
on standard values for
atomic mass and initiated
a search for relationships
between atomic mass and
other properties of the
elements.
