Eric Adelberger
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Eric George Adelberger (born June 26, 1938 in
Bryn Mawr, Pennsylvania Bryn Mawr (, from Welsh language, Welsh for 'big hill') is a census-designated place (CDP) located in Pennsylvania, United States. It is located just west of Philadelphia along Lancaster Avenue, also known as U.S. Route 30 in Pennsylvania, U.S. ...
) is an American experimental nuclear physicist and gravitational metrologist.


Biography

He graduated from Washington-Lee High School (now known as
Washington-Liberty High School Washington-Liberty High School, formerly known as Washington-Lee High School, is a public high school in the Arlington Public Schools district in Arlington, Virginia, covering grades 9–12. Its attendance area serves the central third of Ar ...
), and then matriculated at
California Institute of Technology The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...
(Caltech), where he was inspired by
Richard Feynman Richard Phillips Feynman (; May 11, 1918 – February 15, 1988) was an American theoretical physicist. He is best known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of t ...
. At Caltech Adelberger graduated in 1960 with a B.S. and in 1967 with a Ph.D. under the supervision of Charles A. Barnes (1921–2015). As a postdoc Adelberger was from 1967 to 1968 a research fellow at Caltech and from 1968 to 1969 a research associate at
Stanford University Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
. From 1969 to 1971 he was an assistant professor at
Princeton University Princeton University is a private university, private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial ...
. At Seattle's
University of Washington The University of Washington (UW and informally U-Dub or U Dub) is a public research university in Seattle, Washington, United States. Founded in 1861, the University of Washington is one of the oldest universities on the West Coast of the Uni ...
, he was from 1971 to 1972 an assistant professor, from 1972 to 1975 an associate professor, and from 1975 to 2007 a full professor, retiring in 2007 as professor emeritus. From 1978 to 1981 he was an associate editor for ''
Physical Review Letters ''Physical Review Letters'' (''PRL''), established in 1958, is a peer-reviewed, scientific journal that is published 52 times per year by the American Physical Society. The journal is considered one of the most prestigious in the field of physics ...
''. His research deals with experimental nuclear physics (including fundamental symmetries in nuclei and nuclear structure) and experimental gravitational physics. In the University of Washington's Eöt-wash Group, he has investigated the validity of Newton's law of gravitation down to small distances, smaller than the previously tested minimum distances in the mm range. In 2007, the group was able to rule out
extra dimensions In physics, extra dimensions or extra-dimensional spaces are proposed as additional space or time dimensions beyond the (3 + 1) typical of observed spacetime — meaning 5-dimensional or higher. such as the first attempts based on the K ...
larger than 44
micron The micrometre (English in the Commonwealth of Nations, Commonwealth English as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American English), also commonly known by the non-SI term micron, is a uni ...
s and hopes to be able to continue the experiment down to a few microns. With an improved torsion balance they also tested the
equivalence principle The equivalence principle is the hypothesis that the observed equivalence of gravitational and inertial mass is a consequence of nature. The weak form, known for centuries, relates to masses of any composition in free fall taking the same t ...
for various substances and distances from 1 m to very large distances (from planet Earth to the centre of the
Milky Way The Milky Way or Milky Way Galaxy is the galaxy that includes the Solar System, with the name describing the #Appearance, galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars in other arms of the galax ...
). They set new precision records in 2006 and 2008 for the Eötvös parameter with an accuracy that was not improved until the
MICROSCOPE A microscope () is a laboratory equipment, laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic ...
orbital satellite experiment in 2017. In 1982 he received the Humboldt Senior Scientist Award. In 1985 he received the Tom W. Bonner Prize in Nuclear Physics for "his outstanding contributions in using nuclei to study fundamental symmetries, particularly studies of parity violation and isospin mixing." In 2021 he was awarded, jointly with
Blayne Heckel Blayne Ryan Heckel (born March 20, 1953) is an American experimental physicist whose research involved precision measurements in atomic physics and gravitational physics. He is a professor emeritus at the University of Washington in Seattle. Educa ...
and Jens H. Gundlach, the
Breakthrough Prize in Fundamental Physics The Breakthrough Prize in Fundamental Physics is one of the Breakthrough Prizes, awarded by the Breakthrough Prize Board. Initially named Fundamental Physics Prize, it was founded in July 2012 by Russia-born Israeli entrepreneur, venture capit ...
for “precision fundamental measurements that test our understanding of gravity, probe the nature of
dark energy In physical cosmology and astronomy, dark energy is a proposed form of energy that affects the universe on the largest scales. Its primary effect is to drive the accelerating expansion of the universe. It also slows the rate of structure format ...
, and establish limits on couplings to
dark matter In astronomy, dark matter is an invisible and hypothetical form of matter that does not interact with light or other electromagnetic radiation. Dark matter is implied by gravity, gravitational effects that cannot be explained by general relat ...
." Adelberger was elected in 1978 a fellow of the
American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of ...
(APS), in 1994 a member of the
National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the ...
, and in 1998 a fellow of the
American Academy of Arts and Sciences The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and other ...
. In August 1961 in Arlington, Virginia, he married Audra Elizabeth Browman. They have two children. Eric and Audra Adelberger have often backpacked and kayaked together and are long-time supporters of The Wilderness Society and
The Nature Conservancy The Nature Conservancy (TNC) is a global environmental organization headquartered in Arlington, Virginia, United States. it works via affiliates or branches in 79 countries and territories, as well as across every state in the US. Founded in ...
. In 1969, they made the first ascent of Mount Aleutka in Alaska.''North America, United-States, Alaska, Peaks above Glacier Bay, Fairweather Range''
Eric Adelberger, American Alpine Journal, 1972.


Selected publications

* * * (over 900 citations) * * (over 900 citations) * * (over 800 citations) * * * *


References


External links

* * * (slides) * * * * * {{DEFAULTSORT:Adelberger, Eric G. 1938 births Living people California Institute of Technology alumni University of Washington faculty American experimental physicists American nuclear physicists 20th-century American physicists 21st-century American physicists Metrologists Fellows of the American Physical Society Fellows of the American Academy of Arts and Sciences Members of the United States National Academy of Sciences American people of German descent California Institute of Technology fellows