isotopes

Henry Moseley and the Atomic Numbers

Henry Moseley and the Atomic Numbers

On August 10, 1915, English physicist, Henry Moseley was killed in action. Moseley‘s contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number. This stemmed from his development of Moseley’s law in X-ray spectra. The Periodic Table of Elements For sure you do remember that poster from your classroom with all the chemical elements ordered in the so-called periodic table. But,…
Read more
Theodore William Richards and the Weight of Chemical Elements

Theodore William Richards and the Weight of Chemical Elements

On January 31, 1868, American chemist Theodore William Richards was born. Richards was the first American scientist to receive the Nobel Prize in Chemistry “in recognition of his accurate determinations of the atomic weight of a large number of chemical elements.” His work meticulously refined the classical gravimetric methods of analysis to better reduce the sources of error. Together with his co-workers, he was able to measure accurate values for atomic weight…
Read more
Relation Browser
Timeline
0 Recommended Articles:
0 Recommended Articles: