Merrill, Paul Willard (1887-1961)

Details Merrill, Paul Willard (1887-1961) Merrill, Paul Willard (1887-1961)

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke3854.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 3854. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astronomy

History And Archaeoastronomy, Biographies

Scientific paper

Astronomer, staff-member of the Mount Wilson Observatory, spectroscopist who studied variable stars. He identified the element technetium in an S-type star R Andromedae. The atoms of this element have no stable nuclear isotopes, so the element must have been made within the last million years, although the star was much older. The discovery proved that the element must have been made recently ...

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