Description: Henry David Hubbard (1870-1943), a physicist at the U.S. National Bureau of Standards, designed the first edition of the "Periodic Chart of the Atoms" in 1924. The chart is still in use today, continually updated to reflect new elements.
Description: A brief biographical sketch of Dr. Gabriele Rabel, Austrian born phyisist, biologist, philosopher, author, and stringer for Science Service in the 1930’s.