Luis W. Alvarez (June 13, 1911, San Francisco, California The City and County of San Francisco is the fourth most populous city in California and the 12th most populous city in the United States, with a 2008 estimated population of 808,977. The only consolidated city-county in California, it encompasses a land area of 46.7 square miles on the northern end of the San Francisco Peninsula, making it the – September 1, 1988) was an American ^ b. English is the de facto language of American government and the sole language spoken at home by 80% of Americans age five and older. Spanish is the second most commonly spoken language experimental physicist Within the field of physics, experimental physics is the category of disciplines and sub-disciplines concerned with the observation of physical phenomena in order to gather data about the universe. Methods vary from discipline to discipline, from simple experiments and observations, such as the Cavendish experiment, to more complicated ones, such and inventor An invention is a new composition, device, or process. An invention may be derived from a pre-existing model or idea, or it could be independently conceived in which case it may be a radical breakthrough. In addition, there is cultural invention, which is an innovative set of useful social behaviors adopted by people and passed on to others, who spent nearly all of his long professional career on the faculty of the University of California, Berkeley The University of California, Berkeley , is a public research university located in Berkeley, California, United States. The oldest of the ten major campuses affiliated with the University of California, Berkeley offers some 300 undergraduate and graduate degree programs in a wide range of disciplines. The university occupies 6,651 acres (2,692 ha). The American Journal of Physics The American Journal of Physics is a peer-reviewed scientific journal published by the American Association of Physics Teachers devoted to the educational and cultural aspects of physics. It is notable for its entertaining and accessible style commented, "Luis Alvarez (1911–1988) was one of the most brilliant and productive experimental physicists of the twentieth century."[1]
He was the author of 168 published papers in scientific journals, mostly in the field of physics, and was elected to the National Academy of Science The group holds a congressional charter under Title 36 of the United States Code in 1947 and the National Academy of Engineering The United States National Academy of Engineering , a private, non-profit institution that was founded in 1964 under the same congressional act that led to the founding of the National Academy of Sciences. The NAE is part of the United States National Academies, which also includes: in 1969. He was a member of the American Physical Society The American Physical Society is the world's second largest organization of physicists, behind the Deutsche Physikalische Gesellschaft. The Society publishes more than a dozen scientific journals, including the world renowned Physical Review and Physical Review Letters, and organizes more than twenty science meetings each year. It is also a member, a fellow in 1939, and served as President in 1969. He was awarded the Collier Trophy The Collier Trophy is an annual aviation award administered by the U.S. National Aeronautics Association , presented to those who have made "the greatest achievement in aeronautics or astronautics in America, with respect to improving the performance, efficiency, and safety of air or space vehicles, the value of which has been thoroughly by the National Aeronautics Association The National Aeronautic Association of the United States is a non-profit 501(c)(3) organization and a member of the Fédération Aéronautique Internationale (FAI), the international standard setting and record-keeping body for aeronautics and astronautics. NAA is the official record-keeper for United States aviation. It is "dedicated to the in 1946. The trophy was presented by President Truman Harry S. Truman was the 33rd President of the United States (1945–1953). As President Franklin D. Roosevelt's third vice-president and the 34th Vice President of the United States, he succeeded to the presidency on April 12, 1945, when President Roosevelt died less than three months after beginning his historic fourth term; and won the Presidential Medal for Merit The Presidential Medal for Merit is one of the highest civilian decoration of the United States, awarded by the President of the United States to civilians for exceptionally meritorious conduct. It was created by Executive Order 9637--Medal for Merit on October 3, 1945, later amended and restated by Executive Order 9857A of May 27, 1947. At the in 1947. In 1960 he was named California Scientist of the Year; in 1961 he won the Albert Einstein Award The Albert Einstein Award was an award in theoretical physics that was established to recognize high achievement in the natural sciences. It was endowed by the Lewis and Rosa Strauss Memorial Fund in honor of Albert Einstein's 70th birthday. It was first awarded in 1951 and included a prize money of $15,000, which was later reduced to $5,000. The. In 1963 he was presented the National Medal of Science The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral and social sciences, biology, chemistry, engineering, mathematics and physics. The twelve member presidential Committee by Lyndon B. Johnson Lyndon Baines Johnson , often referred to as LBJ, served as the 36th President of the United States from 1963 to 1969 after his service as the 37th Vice President of the United States from 1961 to 1963. He is one of four Presidents – along with John Tyler, Andrew Johnson and Richard Nixon – who served in all four elected Federal offices of the; in 1965 the Michelson Award The Computer Measurement Group , founded in 1974, is a worldwide non-profit organization of data processing professionals whose work involves measuring and managing the performance of computing systems. In this context, performance is understood to mean the response time of software applications of interest, and the overall capacity (or throughput); in 1978 he received the University of Chicago Alumni Medal and was inducted into the National Inventors Hall of Fame The National Inventors Hall of Fame Foundation is a not-for-profit organization dedicated to recognizing, honoring and encouraging invention and creativity through the administration of its programs. The Hall of Fame honors the men and women responsible for the great technological advances that make human, social and economic progress possible. As. In 1987, the US Department of Energy The United States Department of Energy is a Cabinet-level department of the United States government concerned with the United States' policies regarding energy and safety in handling nuclear material. Its responsibilities include the nation's nuclear weapons program, nuclear reactor production for the United States Navy, energy conservation, granted him its 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. The recipient receives $375,000, a certificate signed by the President and the Secretary of Energy, and a gold medal.[2]
He won the 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 Nobel Prize in physiology or medicine. The first Nobel in 1968, and received over 40 patents, some of which proved commercially viable.
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Biography
The Alvarez family was of Spanish American American English · U.S. Spanish · European Spanish descent. Alvarez was the son of Walter C. Alvarez, a doctor who for a time was a researcher at the Mayo Clinic Mayo Clinic is a not-for-profit organization and a medical practice and medical research group located in 3 metropolis areas: Rochester, Minnesota, Scottsdale/ Phoenix, Arizona, and Jacksonville, Florida, along with Mayo Clinic Hospitals and some satellite healthcare and research facilities in and near those cities . It is an integral part of the, and of Harriet Smythe, and a grandson of Luis F. Alvarez Luis F. Álvarez was a Spanish American physician and researcher who practiced in both California and Hawaii, a doctor in Hawaii The state encompasses nearly the entire volcanic Hawaiian Island chain, which comprises hundreds of islands spread over 1,500 miles . At the southeastern end of the archipelago, the eight "main islands" are (from the northwest to southeast) Niʻihau, Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Kahoʻolawe, Maui, and Hawaiʻi. The last is by who found a better method for diagnosing macular leprosy. His aunt, Mabel Alvarez Mabel Alvarez was a Spanish-American artist and oil painter. She was born to a prominent Spanish family who lived on the island of Oahu, Hawaii, was a California artist specializing in oil painting Oil painting is the process of painting with pigments that are bound with a medium of drying oil — especially in early modern Europe, linseed oil. Often an oil such as linseed was boiled with a resin such as pine resin or even frankincense; these were called 'varnishes' and were prized for their body and gloss. Other oils occasionally used. Alvarez married Geraldine Smithwick in 1936 and had two children, Walter Walter Alvarez is a professor in the Earth and Planetary Science department at the University of California, Berkeley. His father was Nobel Prize winning physicist Luis Alvarez and Jean. In 1958, he married Janet L. Landis and had two more children, Donald and Helen.
Early Work
Nobel Laureate Arthur Compton with young graduate student Luis Alvarez at the University of Chicago in 1933 (Photo: LBNL The Ernest Orlando Lawrence Berkeley National Laboratory , is a U.S. Department of Energy (DOE) 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. It is managed and operated by the University of California)Alvarez was educated at the University of Chicago The University of Chicago is a private, coeducational 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. Incorporated in 1890, William Rainey Harper became the university's first president in 1891 and the first classes, where he received his bachelor's degree A bachelor's degree is usually an academic degree awarded for an undergraduate course or major that generally lasts for four years, but can range from two to six years depending on the region of the world. It may also be the name of a "postgraduate" degree, such as a Bachelor of Civil Law, the Bachelor of Music, or the Bachelor of in 1932, his master's degree A master's degree 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. Within the area studied, graduates possess advanced knowledge of a specialized body of theoretical and applied topics; high order skills in analysis, in 1934, and his PhD Doctor of Philosophy, abbreviated to PhD, Ph.D. or D.Phil. in English-speaking countries and Dr. Phil. or similar in other countries, for the Latin philosophiae doctor, meaning "teacher in philosophy", is an advanced academic degree awarded by universities. In most English-speaking countries, the PhD is the highest degree one can earn in 1936. In 1932, while still a graduate student Postgraduate education involves learning and studying for degrees or other qualifications for which a first or Bachelor's degree generally is required, and is normally considered to be part of tertiary or higher education. In North America, this level is generally referred to as graduate school at Chicago, Alvarez constructed an apparatus of Geiger counter A Geiger counter, also called a Geiger-Müller counter, is a type of particle detector that measures ionizing radiation. They are notable for being used to detect if objects emit nuclear radiation tubes arranged as a cosmic ray telescope, and under the aegis of his faculty advisor Arthur Compton Arthur Holly Compton was an American physicist and Nobel laureate in physics for his discovery of the Compton effect. He served as Chancellor of Washington University in St. Louis from 1945 to 1953, conducted an experiment in Mexico City to measure the so-called East–West effect of the cosmic rays Cosmic rays are energetic particles originating from outer space that impinge on Earth's atmosphere. About 89% of all the incoming cosmic ray particles are simple protons, with nearly 10% being helium nuclei , and slightly under 1% are heavier elements; electrons (beta particles) constitute about 1% of galactic cosmic rays. The term ray is a. Observing more incoming radiation from the west Alvarez correctly concluded that primary cosmic rays were positively charged, a fact unknown at the time. Following the receipt of his degree he joined Ernest Lawrence's group at the Radiation Laboratory at UC Berkeley The University of California, Berkeley , is a public research university located in Berkeley, California, United States. The oldest of the ten major campuses affiliated with the University of California, Berkeley offers around 300 undergraduate and graduate degree programs in a wide range of disciplines. The university occupies 6,651 acres (2,692 in 1936.[3]
At the Radiation Laboratory he worked with Lawrence's experimental team and group of theoretical physicists working with Robert Oppenheimer J. Robert Oppenheimer was an American theoretical physicist and professor of physics at the University of California, Berkeley. He is best known for his role as the scientific director of the Manhattan Project, the World War II effort to develop the first nuclear weapons at the secret Los Alamos National Laboratory in New Mexico. For this reason. Of the twenty or so papers he published in these years, there are three areas of accomplishment that are particularly important. He devised a set of experiments to observe K-electron capture Electron capture is a decay mode for isotopes that will occur when there are too many protons in the nucleus of an atom and insufficient energy to emit a positron; however, it continues to be a viable decay mode for radioactive isotopes that can decay by positron emission. If the energy difference between the parent atom and the daughter atom is in radioactive nuclei Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting ionizing particles or radiation. The emission is spontaneous in that the nucleus decays without collision with another particle. This decay, or loss of energy, results in an atom of one type, called the parent nuclide, transforming to an atom of a, predicted by the beta decay In nuclear physics, beta decay is a type of radioactive decay in which a beta particle is emitted. In the case of electron emission, it is referred to as beta minus (β⁻), while in the case of a positron emission as beta plus (β+). Kinetic energy of beta particles has continuous spectrum ranging from 0 to maximal available energy (Q), which theory but never observed. Using magnets A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials like iron and attracts or repels other magnets to sweep aside the positrons The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1e, a spin of 1⁄2, and the same mass as an electron. When a low-energy positron collides with a low-energy electron, annihilation occurs, resulting in the production of two or more gamma ray photons and electrons The electron is a subatomic particle carrying a negative electric charge. It has no known components or substructure, and therefore is believed to be an elementary particle. An electron has a mass that is approximately 1/1836 that of the proton. The intrinsic angular momentum of the electron is a half integer value in units of ħ, which means that emanating from his radioactive sources, he designed a special purpose Geiger counter to detect only the "soft" X-rays X-radiation is a form of electromagnetic radiation. X-rays have a wavelength in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3 × 1016 Hz to 3 × 1019 Hz) and energies in the range 120 eV to 120 keV. They are shorter in wavelength than UV rays and longer than gamma rays. In many coming from K capture. His conclusive results were published in the Physical Review Physical Review is an American scientific journal founded in 1893 by Edward Nichols. It publishes original research and scientific and literature reviews on all aspects of physics. It is published by the American Physical Society. The journal is in its third series, and is split in several sub-journals each covering a particular field of physics in 1938 with him as sole author.[clarification needed][citation needed]
Another achievement of Alvarez concerned nuclear reactions In nuclear physics and nuclear chemistry, a nuclear reaction is the process in which two nuclei or nuclear particles collide to produce products different from the initial particles. In principle a reaction can involve more than three particles colliding, but because the probability of three or more nuclei to meet at the same time at the same. When deuterium Deuterium, also called heavy hydrogen, is a stable isotope of hydrogen with a natural abundance in the oceans of Earth of approximately one atom in 6,400 of hydrogen . Deuterium thus accounts for approximately 0.0156% (alternately, on a mass basis: 0.0312%) of all naturally occurring hydrogen in the oceans on Earth (see VSMOW; the abundance (hydrogen-2) is bombarded with deuterium, the fusion reaction yields either tritium Tritium is a radioactive isotope of hydrogen. The nucleus of tritium (sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of protium (by far the most abundant hydrogen isotope) contains one proton and no neutrons. Naturally-occurring tritium is extremely rare on the Earth, where trace amounts are forms by the (hydrogen-3) plus a proton or Helium-3 plus a neutron (2H + 2H → 3H + p or 3He + n). This is one of the most basic fusion reactions, and the foundation of the hydrogen bomb and the current research on controlled nuclear fusion. At that time the stability of these two reaction products was unknown, but based on existing theories it was felt that 3H would be stable and 3He unstable. Alvarez proved the reverse by using his knowledge of the details of the 60-inch cyclotron operation. He tuned the machine to accelerate doubly ionized 3He nuclei and was able to get a beam of accelerated ions, thus using the cyclotron as a kind of super mass spectrometer. As the accelerated helium came from deep gas wells where it had been for millions of years, the 3He component had to be stable. Afterwards Alvarez produced 3H using the cyclotron and the 2H + 2H reaction and measured the lifetime of the radioactive 3H.[4]
In 1938, again using his knowledge of the cyclotron and inventing what are now known as time-of-flight techniques, Alvarez created a mono-energetic beam of thermal neutrons. With this he began a long series of experiments collaborating with Felix Bloch, to measure the magnetic moment of the neutron. Their result of μ0 = 1.93±0.02,[clarification needed][citation needed] published in 1940, was a major advancement over earlier work. Bloch continued with experimental work in an effort to measure the magnetic moment of the proton. His later work in what would come to be called nuclear magnetic resonance (NMR) would win him the 1968 Nobel Prize.
The Tizard mission to the United States in 1940 demonstrated to leading American scientists the successful application of the cavity magnetron to produce short wavelength pulsed radar. The National Defense Research Committee, established only months earlier by President Roosevelt, created a central national laboratory at the Massachusetts Institute of Technology (MIT) for the purpose of developing military applications of microwave radar. Lawrence immediately recruited his best "cyclotroneers", among them Alvarez, for this new laboratory, called the Radiation Laboratory.
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Baseball America
Jiri (Toronto): Alvarez took a lot of heat for his struggles in the first half. After his huge second half, is he regarded as a top notch prospect again? ...
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Luis nos manda estos fabulosos dibujos del 1500
Jorge Luis Alvarez p.1
Fri, 14 May 2010 15:02:00 GM
The story Dickens had written began to be copied by other authors in America. The worry of not being credited for making the original haunted Dickens. To relax, Wilkie went back to the Undertown to the opium dens. ...
