Arno Allan Penzias is an
AmericanThe United States of America is a federal constitutional republic comprising fifty states and a federal district...
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...
and Nobel laureate in
physicsThe Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and...
.
Early life and education
Penzias was born in
MunichMunich The city's motto is "" . Before 2006, it was "Weltstadt mit Herz" . Its native name, , is derived from the Old High German Munichen, meaning "by the monks' place". The city's name derives from the monks of the Benedictine order who founded the city; hence the monk depicted on the city's coat...
,
GermanyGermany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
. At age six he was among the Jewish children evacuated to
BritainThe United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
as part of the
KindertransportKindertransport is the name given to the rescue mission that took place nine months prior to the outbreak of the Second World War. The United Kingdom took in nearly 10,000 predominantly Jewish children from Nazi Germany, Austria, Czechoslovakia, Poland and the Free City of Danzig...
rescue operation. Six months later his parents also fled
Nazi GermanyNazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...
for the
U.S.The United States of America is a federal constitutional republic comprising fifty states and a federal district...
, and the family settled in the
Garment DistrictThe Garment District, also known as the Garment Center, the Fashion District, or the Fashion Center, is a neighborhood located in the Manhattan borough of New York City. The dense concentration of fashion-related uses give the neighborhood, which is generally considered to span between Fifth Avenue...
of
New York CityNew York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...
in 1940. In 1946, Penzias became a naturalized citizen of the
United StatesThe United States of America is a federal constitutional republic comprising fifty states and a federal district...
. He graduated from
Brooklyn Technical High SchoolBrooklyn Technical High School, commonly called Brooklyn Tech or just Tech, and also administratively as High School 430, is a New York City public high school that specializes in engineering, math and science and is the largest specialized high school for science, technology, engineering, and...
in 1951 and received a
bachelor's degreeA bachelor's degree is usually an academic degree awarded for an undergraduate course or major that generally lasts for three or four years, but can range anywhere from two to six years depending on the region of the world...
from the
City College of New YorkThe City College of the City University of New York is a senior college of the City University of New York , in New York City. It is also the oldest of the City University's twenty-three institutions of higher learning...
in 1954. From
Columbia UniversityColumbia University in the City of New York is a private, Ivy League university in Manhattan, New York City. Columbia is the oldest institution of higher learning in the state of New York, the fifth oldest in the United States, and one of the country's nine Colonial Colleges founded before the...
, he received his
Master's degreeA master's is an academic degree granted to individuals who have undergone study demonstrating a mastery or high-order overview of a specific field of study or area of professional practice...
in 1958 and his
Ph.D.Doctor of Philosophy, abbreviated as Ph.D., PhD, D.Phil., or DPhil , in English-speaking countries, is a postgraduate academic degree awarded by universities...
in 1962.
Career
He went on to work at
Bell LabsBell Laboratories is the research and development subsidiary of the French-owned Alcatel-Lucent and previously of the American Telephone & Telegraph Company , half-owned through its Western Electric manufacturing subsidiary.Bell Laboratories operates its...
in Holmdel, New Jersey where, with
Robert Woodrow WilsonFor the American President, see Woodrow Wilson.Robert Woodrow Wilson is an American astronomer, 1978 Nobel laureate in physics, who with Arno Allan Penzias discovered in 1964 the cosmic microwave background radiation...
, he worked on ultra-sensitive cryogenic
microwaveMicrowaves, a subset of radio waves, have wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300 MHz and 300 GHz. This broad definition includes both UHF and EHF , and various sources use different boundaries...
receivers, intended for radio astronomy observations. In 1964, on building their most sensitive antenna/receiver system, the pair encountered radio noise which they could not explain. It was far less energetic than the radiation given off by the
Milky WayThe Milky Way is the galaxy that contains the Solar System. This name derives from its appearance as a dim un-resolved "milky" glowing band arching across the night sky...
, and it was isotropic, so they assumed their instrument was subject to interference by terrestrial sources. They tried, and then rejected, the hypothesis that the radio noise emanated from New York City. An examination of the microwave
horn antennaA horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct the radio waves. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz...
showed it was full of pigeon droppings (which Penzias described as "white
dielectricA dielectric is an electrical insulator that can be polarized by an applied electric field. When a dielectric is placed in an electric field, electric charges do not flow through the material, as in a conductor, but only slightly shift from their average equilibrium positions causing dielectric...
material"). After the pair removed the guano buildup, and the pigeons were shot (each physicist says the other ordered the deed), the noise remained. Having rejected all sources of interference, the pair published a paper announcing their findings. This was later identified by Robert Dicke as the
cosmic microwave background radiationIn cosmology, cosmic microwave background radiation is thermal radiation filling the observable universe almost uniformly....
(CMB), the radio remnant of the
Big BangThe Big Bang theory is the prevailing cosmological model that explains the early development of the Universe. According to the Big Bang theory, the Universe was once in an extremely hot and dense state which expanded rapidly. This rapid expansion caused the young Universe to cool and resulted in...
. This allowed astronomers to confirm the Big Bang, and to correct many of their previous assumptions about it.
He was elected a Fellow of the
American Academy of Arts and SciencesThe American Academy of Arts and Sciences is an independent policy research center that conducts multidisciplinary studies of complex and emerging problems. The Academy’s elected members are leaders in the academic disciplines, the arts, business, and public affairs.James Bowdoin, John Adams, and...
in 1975. Penzias and Wilson received the 1978 Nobel Prize, sharing it with Pyotr Leonidovich Kapitsa (Kapitsa's work was unrelated to Penzias and Wilson's). In 1977 the two had received the
Henry Draper MedalThe Henry Draper Medal is awarded by the United States National Academy of Sciences "for investigations in astronomical physics". Named after Henry Draper, the medal is awarded with a gift of USD $15,000...
of 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...
. Penzias is also the recipient of The International Center in New York's Award of Excellence.
Penzias has been a resident of
Highland Park, New JerseyHighland Park is a borough in Middlesex County, New Jersey, United States. As of the 2010 United States Census, the borough population was 13,982....
. He has a son, David, and two daughters, Mindy Penzias Dirks, PhD, and Rabbi Shifra (Laurie) Weiss-Penzias. He currently serves as a venture partner at
New Enterprise AssociatesNew Enterprise Associates is a global investment firm focused on venture capital and growth equity investments. With approximately $11 billion in committed capital, NEA is among the largest venture firms. The firm invests in three broad industry sectors: information technology, healthcare, and...
.
External links