Ada Hitchins
... that Ada Hitchins's measurements of atomic mass from uranium ores provided the first experimental evidence for the existence of isotopes?
... that <b id="mwA8k"><a href="./Ada_Hitchins" id="mwA8o" rel="mw:WikiLink" title="Ada Hitchins">Ada Hitchins</a></b><span about="#mwt23" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"`s","href":"./Template:`s"},"params":{},"i":0}}]}' id="mwA8s" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> measurements of <a href="./Atomic_mass" id="mwA8w" rel="mw:WikiLink" title="Atomic mass">atomic mass</a> from <a href="./Uranium" id="mwA80" rel="mw:WikiLink" title="Uranium">uranium</a> ores <i id="mwA84">(pictured)</i> provided the first experimental evidence for the existence of <a href="./Isotope" id="mwA88" rel="mw:WikiLink" title="Isotope">isotopes</a>?