Ernest Lawrence
Encyclopedia
Ernest Orlando Lawrence (August 8, 1901 – August 27, 1958) was an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 physicist and Nobel Laureate, known for his invention, utilization, and improvement of the cyclotron
Cyclotron
In technology, a cyclotron is a type of particle accelerator. In physics, the cyclotron frequency or gyrofrequency is the frequency of a charged particle moving perpendicularly to the direction of a uniform magnetic field, i.e. a magnetic field of constant magnitude and direction...

 atom-smasher beginning in 1929, based on his studies of the works of Rolf Widerøe, and his later work in uranium-isotope separation for the Manhattan Project
Manhattan Project
The Manhattan Project was a research and development program, led by the United States with participation from the United Kingdom and Canada, that produced the first atomic bomb during World War II. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the US Army...

. Lawrence had a long career at the University of California, Berkeley
University of California, Berkeley
The University of California, Berkeley , is a teaching and research university established in 1868 and located in Berkeley, California, USA...

, where he became a Professor
Professor
A professor is a scholarly teacher; the precise meaning of the term varies by country. Literally, professor derives from Latin as a "person who professes" being usually an expert in arts or sciences; a teacher of high rank...

 of Physics
Physics
Physics is a natural science that involves the study of matter and its motion through spacetime, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.Physics is one of the oldest academic...

. In 1939, Lawrence was awarded the Nobel Prize in Physics
Nobel Prize in Physics
The 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...

 for his work in inventing the cyclotron and developing its applications. Chemical element number 103 is named "lawrencium
Lawrencium
Lawrencium is a radioactive synthetic chemical element with the symbol Lr and atomic number 103. In the periodic table of the elements, it is a period 7 d-block element and the last element of actinide series...

" in Lawrence's honor. He was also the first recipient of the Sylvanus Thayer Award
Sylvanus Thayer Award
The Sylvanus Thayer Award is an award that is given each year by the United States Military Academy at West Point. Sylvanus Thayer was the fifth superintendent of that academy and in honor of his achievements, the award was created...

. His brother John H. Lawrence
John H. Lawrence
John Hundale Lawrence was an American physicist and physician best known for pioneering the field of nuclear medicine. -Background:John Hundale Lawrence was born in Canton, South Dakota...

 was known for pioneering in the field of nuclear medicine
Nuclear medicine
In nuclear medicine procedures, elemental radionuclides are combined with other elements to form chemical compounds, or else combined with existing pharmaceutical compounds, to form radiopharmaceuticals. These radiopharmaceuticals, once administered to the patient, can localize to specific organs...

.

Early life

Ernest Orlando Lawrence was born in Canton, South Dakota
Canton, South Dakota
Canton is a city in and the county seat of Lincoln County, South Dakota, United States. The city was named by Norwegian settler and former legislator James M. Wahl...

. His parents, Carl Gustavus and Gunda (née Jacobson) Lawrence, were both the offspring of Norwegian immigrants who had met while teaching at the high school in Canton, South Dakota, where his father was also the superintendent of schools. Growing up, his best friend was Merle Tuve
Merle Tuve
Merle Anthony Tuve, PhD was an American scientist and geophysicist who was the founding director of the Johns Hopkins University Applied Physics Laboratory. He was a pioneer in the use of pulsed radio waves whose discoveries opened the way to the development of radar and nuclear...

, who would also go on to become a highly accomplished nuclear physicist.

Lawrence attended St. Olaf College
St. Olaf College
St. Olaf College is a coeducational, residential, four-year, private liberal arts college in Northfield, Minnesota, United States. It was founded in 1874 by a group of Norwegian-American immigrant pastors and farmers, led by Pastor Bernt Julius Muus. The college is named after Olaf II of Norway,...

 in Minnesota
Minnesota
Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

, but he transferred to the University of South Dakota
University of South Dakota
The University of South Dakota ', the state’s oldest university, was founded in 1862 and classes began in 1882. Located in Vermillion, South Dakota, United States, USD is home to South Dakota's only medical school and law school. USD is governed by the South Dakota Board of Regents, and its current...

 after his first year. Lawrence completed his bachelor's degree in 1922. He earned his master's degree in physics from the University of Minnesota
University of Minnesota
The University of Minnesota, Twin Cities is a public research university located in Minneapolis and St. Paul, Minnesota, United States. It is the oldest and largest part of the University of Minnesota system and has the fourth-largest main campus student body in the United States, with 52,557...

 in 1923. Next, Lawrence spent a year at the University of Chicago
University of Chicago
The University of Chicago is a private research university in Chicago, Illinois, USA. It was founded by the American Baptist Education Society with a donation from oil magnate and philanthropist John D. Rockefeller and incorporated in 1890...

, and then he moved on to Yale University
Yale University
Yale University is a private, Ivy League university located in New Haven, Connecticut, United States. Founded in 1701 in the Colony of Connecticut, the university is the third-oldest institution of higher education in the United States...

, where he completed his Ph.D.
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...

 degree in physics in 1925, making him somewhat unusual in his field—a very promising young physical scientist who had received his entire education in the United States. These were years when study at one of the great science institutions of Europe was considered to be essential for anyone who truly wished to make a significant scientific progress. Lawrence remained at Yale University as a researcher, working in the photoelectric effect
Photoelectric effect
In the photoelectric effect, electrons are emitted from matter as a consequence of their absorption of energy from electromagnetic radiation of very short wavelength, such as visible or ultraviolet light. Electrons emitted in this manner may be referred to as photoelectrons...

, and he became an assistant professor there in 1927.

In 1928, Lawrence was hired as an Associate Professor of Physics at the University of California, and two years later he became a full Professor, becoming the youngest Professor at the University of California. There, he was called the "Atom Smasher", and the man who "held the key" to atomic energy. "He wanted to do 'big physics,' the kind of work that could only be done on a large scale with a lot of people involved," said Herbert York
Herbert York
Herbert Frank York was an American nuclear physicist. He held numerous research and administrative positions at various United States government and educational institutes.-Biography:...

, the first director of the Lawrence Livermore laboratory, as quoted on that Laboratory's official Web site.

Robert Gordon Sproul
Robert Gordon Sproul
Robert Gordon Sproul was eleventh President of the University of California serving from 1930 to 1958....

 was a member of the Bohemian Club
Bohemian Club
The Bohemian Club is a private men's club in San Francisco, California, United States.Its clubhouse is located at 624 Taylor Street in San Francisco...

, and he sponsored Lawrence's membership in 1932. Through this club, Lawrence met William Henry Crocker, Edwin Pauley, and John Francis Neylan
John Francis Neylan
John Francis Neylan, lawyer, journalist, political and educational figure, was born in New York City on November 6 1885.After graduation from Seton Hall College in New Jersey in 1903, he went West. California was his destination, but he stopped off in Arizona and worked there for several years as a...

. They were influential men who helped him obtain money for his energetic nuclear particle investigations.

The Developments of the Cyclotron

The invention that brought Lawrence to international fame started out as a sketch on a scrap of paper. While sitting in the library one evening, Lawrence glanced over a journal article and was intrigued by one of the diagrams. The idea was to produce very high-energy particles
Particle physics
Particle physics is a branch of physics that studies the existence and interactions of particles that are the constituents of what is usually referred to as matter or radiation. In current understanding, particles are excitations of quantum fields and interact following their dynamics...

 required for atomic disintegration
Nuclear fission
In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts , often producing free neutrons and photons , and releasing a tremendous amount of energy...

 by means of a succession of very small "pushes." The device as depicted however, was laid out in a straight line using increasingly longer electrodes. Lawrence saw that such an accelerator
Particle accelerator
A particle accelerator is a device that uses electromagnetic fields to propel charged particles to high speeds and to contain them in well-defined beams. An ordinary CRT television set is a simple form of accelerator. There are two basic types: electrostatic and oscillating field accelerators.In...

 would soon become too long and unwieldy for his university laboratory. In pondering a way to make the accelerator more compact, Lawrence decided to set a circular accelerating chamber between the poles of an electromagnet. The magnetic field would hold the charged protons in a spiral path as they were accelerated between just two semicircular electrodes connected to an alternating potential. After a hundred turns or so, the protons would impact the target as a beam of high-energy particles. Lawrence excitedly told his colleagues that he had discovered a method for obtaining particles of very high energy without the use of any high voltage.

Other scientists, including Leo Szilard
Leó Szilárd
Leó Szilárd was an Austro-Hungarian physicist and inventor who conceived the nuclear chain reaction in 1933, patented the idea of a nuclear reactor with Enrico Fermi, and in late 1939 wrote the letter for Albert Einstein's signature that resulted in the Manhattan Project that built the atomic bomb...

, had investigated similar concepts, but Lawrence is credited with developing it further and turning it into practice.

The first model of Lawrence's cyclotron
Cyclotron
In technology, a cyclotron is a type of particle accelerator. In physics, the cyclotron frequency or gyrofrequency is the frequency of a charged particle moving perpendicularly to the direction of a uniform magnetic field, i.e. a magnetic field of constant magnitude and direction...

 was made out of brass, wire, and sealing wax and was only four inches in diameter—it could literally be held in one hand. It probably cost $25 in all. And it worked: When Lawrence applied 2,000 volts of electricity to his makeshift cyclotron on January 2, 1931, he got 80,000-electron volt protons spinning around (at about 1% the speed of light). Through his increasingly larger machines, Lawrence was able to provide the crucial equipment needed for experiments in high energy physics
Particle physics
Particle physics is a branch of physics that studies the existence and interactions of particles that are the constituents of what is usually referred to as matter or radiation. In current understanding, particles are excitations of quantum fields and interact following their dynamics...

. Around this device, Lawrence built up his Radiation Laboratory
Lawrence Berkeley National Laboratory
The Lawrence Berkeley National Laboratory , is a U.S. Department of Energy national laboratory conducting unclassified scientific research. It is located on the grounds of the University of California, Berkeley, in the Berkeley Hills above the central campus...

, which would become the world's foremost laboratory for the new field of nuclear physics research in the 1930s. He received a patent
Patent
A patent is a form of intellectual property. It consists of a set of exclusive rights granted by a sovereign state to an inventor or their assignee for a limited period of time in exchange for the public disclosure of an invention....

 for the cyclotron in 1934, which he assigned to the Research Corporation
Research Corporation
The Research Corporation for Science Advancement is an organization in the United States devoted to the advancement of science, funding research projects in the physical sciences. It was also a major supporter of the research that led to the presentation of Interlingua in 1951...

. In 1936 the Radiation Laboratory became an official department of the University of California with Lawrence formally appointed its Director. He served in that capacity until his death. In 1937, he was elected a Fellow of the American Academy of Arts and Sciences
American Academy of Arts and Sciences
The 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 November 1939, Lawrence was awarded the Nobel Prize in Physics
Nobel Prize in Physics
The 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...

 for his work on the cyclotron
Cyclotron
In technology, a cyclotron is a type of particle accelerator. In physics, the cyclotron frequency or gyrofrequency is the frequency of a charged particle moving perpendicularly to the direction of a uniform magnetic field, i.e. a magnetic field of constant magnitude and direction...

, the first particle accelerator to achieve high energies. Not only was he the first at Berkeley to become a Nobel Laureate, he was also the first ever to be so honored while at a state-supported university. The award ceremony was held on February 29, 1940 in Berkeley, California
Berkeley, California
Berkeley is a city on the east shore of the San Francisco Bay in Northern California, United States. Its neighbors to the south are the cities of Oakland and Emeryville. To the north is the city of Albany and the unincorporated community of Kensington...

 due to the war
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, in the auditorium of Wheeler Hall on the campus of the university with Lawrence receiving his medal from Carl E. Wallerstedt, Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

's Consul General in San Francisco.

World War II and the Manhattan Project

During World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, Lawrence eagerly helped to ramp up the American investigation of the possibility of a weapon utilizing nuclear fission
Nuclear fission
In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts , often producing free neutrons and photons , and releasing a tremendous amount of energy...

. His Radiation Laboratory (known as the Rad Lab), became one of the major centers for wartime nuclear research, and it was Lawrence who first introduced J. Robert Oppenheimer into what would soon become the Manhattan Project
Manhattan Project
The Manhattan Project was a research and development program, led by the United States with participation from the United Kingdom and Canada, that produced the first atomic bomb during World War II. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the US Army...

. An early champion of the electromagnetic separation method to enrich uranium
Uranium
Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons...

 and increase its percentage of fissile
Fissile
In nuclear engineering, a fissile material is one that is capable of sustaining a chain reaction of nuclear fission. By definition, fissile materials can sustain a chain reaction with neutrons of any energy. The predominant neutron energy may be typified by either slow neutrons or fast neutrons...

 U-235, Lawrence manufactured his magnetic calutron
Calutron
A calutron is a mass spectrometer used for separating the isotopes of uranium. It was developed by Ernest O. Lawrence during the Manhattan Project and was similar to the cyclotron invented by Lawrence. Its name is a concatenation of Cal. U.-tron, in tribute to the University of California,...

s — specialized forms of mass spectrometers — for the massive isotope separation plants in Oak Ridge, Tennessee
Oak Ridge, Tennessee
Oak Ridge is a city in Anderson and Roane counties in the eastern part of the U.S. state of Tennessee, about west of Knoxville. Oak Ridge's population was 27,387 at the 2000 census...

.

Lawrence's secretary, Helen Griggs
Helen L. Seaborg
Helen L. Seaborg was an American child welfare advocate and the wife of Nobel Prize chemist Glenn T. Seaborg....

 married the future Nobel Prize in Chemistry
Nobel Prize in Chemistry
The Nobel Prize in Chemistry is awarded annually by the Royal Swedish Academy of Sciences to scientists in the various fields of chemistry. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895, awarded for outstanding contributions in chemistry, physics, literature,...

 winner, Glenn T. Seaborg
Glenn T. Seaborg
Glenn Theodore Seaborg was an American scientist who won the 1951 Nobel Prize in Chemistry for "discoveries in the chemistry of the transuranium elements", contributed to the discovery and isolation of ten elements, and developed the actinide concept, which led to the current arrangement of the...

, in 1942, as the three of them made their way to work on the Manhattan Project in Chicago, Illinois.

Post-war career and legacy

After the war, Lawrence campaigned extensively for government sponsorship of large scientific programs. Lawrence was a forceful advocate of "Big Science
Big Science
Big Science is a term used by scientists and historians of science to describe a series of changes in science which occurred in industrial nations during and after World War II, as scientific progress increasingly came to rely on large-scale projects usually funded by national governments or groups...

" with its requirements for big machines and big money.

For his service to his country, Lawrence received the Enrico Fermi Award
Enrico Fermi Award
The Enrico Fermi Award is an award honoring scientists of international stature for their lifetime achievement in the development, use, or production of energy. It is administered by the U.S. government's Department of Energy...

 from the U.S. Atomic Energy Commission
United States Atomic Energy Commission
The United States Atomic Energy Commission was an agency of the United States government established after World War II by Congress to foster and control the peace time development of atomic science and technology. President Harry S...

 in 1957, and was the first recipient of the prestigious Sylvanus Thayer Award
Sylvanus Thayer Award
The Sylvanus Thayer Award is an award that is given each year by the United States Military Academy at West Point. Sylvanus Thayer was the fifth superintendent of that academy and in honor of his achievements, the award was created...

 by the United States Military Academy in 1958.

In July 1958, President Eisenhower
Dwight D. Eisenhower
Dwight David "Ike" Eisenhower was the 34th President of the United States, from 1953 until 1961. He was a five-star general in the United States Army...

 requested that Lawrence travel to Geneva, Switzerland, to help negotiate a proposed treaty with the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

 to ban nuclear weapons testing. Despite suffering from a serious flare-up of his chronic colitis
Colitis
In medicine, colitis refers to an inflammation of the colon and is often used to describe an inflammation of the large intestine .Colitides may be acute and self-limited or chronic, i.e...

, Lawrence decided to go, but he became ill while in Geneva, and was rushed to the hospital at Stanford University
Stanford University
The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is a private research university on an campus located near Palo Alto, California. It is situated in the northwestern Santa Clara Valley on the San Francisco Peninsula, approximately northwest of San...

. Lawrence died one month later in Palo Alto, California
Palo Alto, California
Palo Alto is a California charter city located in the northwest corner of Santa Clara County, in the San Francisco Bay Area of California, United States. The city shares its borders with East Palo Alto, Mountain View, Los Altos, Los Altos Hills, Stanford, Portola Valley, and Menlo Park. It is...

, at the age of 57.

Just 23 days after his death, the Regents of the University of California
Regents of the University of California
The Regents of the University of California make up the governing board of the University of California. The Board has 26 full members:* The majority are appointed by the Governor of California for 12-year terms....

 voted to rename two of the university's nuclear research sites after Lawrence: the Lawrence Livermore
Lawrence Livermore National Laboratory
The Lawrence Livermore National Laboratory , just outside Livermore, California, is a Federally Funded Research and Development Center founded by the University of California in 1952...

 and Lawrence Berkeley Laboratories
Lawrence Berkeley National Laboratory
The Lawrence Berkeley National Laboratory , is a U.S. Department of Energy national laboratory conducting unclassified scientific research. It is located on the grounds of the University of California, Berkeley, in the Berkeley Hills above the central campus...

. The Ernest Orlando Lawrence Award
Ernest Orlando Lawrence Award
The Ernest Orlando Lawrence Award was established in 1959 in honor of a scientist who helped elevate American physics to the status of world leader in the field....

 was established in his memory in 1959. Chemical element number 103, discovered at LBNL in 1961, is named "lawrencium
Lawrencium
Lawrencium is a radioactive synthetic chemical element with the symbol Lr and atomic number 103. In the periodic table of the elements, it is a period 7 d-block element and the last element of actinide series...

" in his honor. In 1968 the Lawrence Hall of Science
Lawrence Hall of Science
The Lawrence Hall of Science is a public science center featuring hands-on exhibits and activities. Located in the hills above the University of California, Berkeley campus, LHS is also a resource center for preschool through high school science and mathematics education.Established in 1968 in...

 public science education center was established in honor of Ernest O. Lawrence, who had been throughout his career a passionate advocate of encouraging public interest in science, particularly among schoolchildren. The museum features a permanent exhibit devoted to Lawrence's life.

Other sources

  • Childs, Herbert An American Genius: The Life of Ernest Orlando Lawrence, Father of the Cyclotron (E. P. Dutton; 1968) ISBN 978-0525054436
  • Herken, Gregg Brotherhood of the Bomb: The Tangled Lives and Loyalties of Robert Oppenheimer, Ernest Lawrence, and Edward Teller (Holt Paperbacks. 2003) ISBN 978-0805065893
  • Heilbron, J.L. and Robert W. Seidel Lawrence and His Laboratory: A History of the Lawrence Berkeley Laboratory (University of California Press; 1989) ISBN 978-0520064263

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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