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Erwin L. Hahn is a U.S.
physicistA physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...
, best known for his work on
nuclear magnetic resonanceNuclear magnetic resonance is a physical phenomenon in which magnetic nuclei in a magnetic field absorb and re-emit electromagnetic radiation...
(NMR). In 1950 he discovered the
spin echoIn magnetic resonance, a spin echo is the refocusing of precessing spin magnetisation by a pulse of resonant radiation. Modern nuclear magnetic resonance and magnetic resonance imaging rely heavily on this effect....
.
He received his B.S. in Physics from
Juniata CollegeJuniata College is a private liberal arts college located in Huntingdon, Pennsylvania. It is named after the Juniata River — one of the principal tributaries of the Susquehanna River. In 1876 it became the first college founded by the Church of the Brethren and has been co-educational since...
and his M.S. and
Ph.D.A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...
from The University of Illinois at Urbana-Champaign. He has been Professor Emeritus at the
University of California, BerkeleyThe University of California, Berkeley , is a teaching and research university established in 1868 and located in Berkeley, California, USA...
since 1991 and was professor of physics, 1955-91. In 1999 Hahn was awarded the
Comstock Prize in PhysicsThe Comstock Prize in Physics is awarded by the U.S. National Academy of Sciences "for recent innovative discovery or investigation in electricity, magnetism, or radiant energy, broadly interpreted."...
from the
National Academy of SciencesThe National Academy of Sciences is a corporation in the United States whose members serve pro bono as "advisers to the nation on science, engineering, and medicine." As a national academy, new members of the organization are elected annually by current members, based on their distinguished and...
.
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