| Phosphorus Phosphorus () is the chemical element that has the symbol P and atomic number 15. The name comes from the (meaning "light") and (meaning "bearer"). A multivalent nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate rocks.Due to its high reactivity, phosphorus is never found as a free element in nature on Earth. Phosphorus
|
| Photon Photon
|
| Polymerase chain reaction molecular biology, the polymerase chain reaction (PCR) is a technique to amplify a single or few copies of a piece of DNA across several orders of magnitude, generating millions or more copies of a particular DNA sequence. The method relies on thermal cycling, consisting of cycles of repeated heating and cooling of the reaction for DNA melting and enzymatic replication of the DNA. Polymerase_chain_reaction
|
| Rotation-powered pulsar Talk:Rotation-powered_pulsar
|
| Photon Talk:Photon
|
| Patrick White Patrick_White
|
| Pierre Curie Pierre Curie (15 May 1859 – 19 April 1906) was a French physicist, a pioneer in crystallography, magnetism, piezoelectricity and radioactivity, and Nobel laureate. In 1903 he received the Nobel Prize in Physics with his wife, Maria Skłodowska-Curie, and Henri Becquerel, "in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel." Pierre_Curie
|
| Proteasome Proteasomes are large protein complexes inside all eukaryotes and archaea, as well as in some bacteria. In eukaryotes, they are located in the nucleus and the cytoplasm. The main function of the proteasome is to degrade unneeded or damaged proteins by proteolysis, a chemical reaction that breaks peptide bonds. Proteasome
|
| Pauli exclusion principle The Pauli exclusion principle is a quantum mechanical principle formulated by Wolfgang Pauli in 1925. It states that no two identical fermions may occupy the same quantum state simultaneously. A more rigorous statement of this principle is that, for two identical fermions, the total wave function is anti-symmetric. Pauli_exclusion_principle
|
| Paul Dirac Paul_Dirac
|
| Pacifism Pacifism is the opposition to war or violence as a means of settling disputes or gaining advantage. Pacifism covers a spectrum of views ranging from the belief that international disputes can and should be peacefully resolved; to calls for the abolition of the institutions of the military and war; to opposition to any organization of society through governmental force (anarchist or libertarian pacifism); to rejection of the use of physical violence to obtain political, economic or social goals; to the condemnation of force except in cases where it is absolutely necessary to advance the cause of peace; to opposition to violence under any circumstance, including defense of self and others. Pacifism
|
| Polymath polymath (Greek polymathēs, πολυμαθής, "having learned much") is a person whose knowledge is not restricted to one subject area. In less formal terms, a polymath (or polymathic person) may simply refer to someone who is very knowledgeable. Most ancient scientists were polymaths by today’s standards.The terms Renaissance man and, less commonly, homo universalis (Latin for "universal man" or "man of the world") are related and used to describe a person who is well educated or who excels in a wide variety of subjects or fields. Polymath
|
| Quark quark ( or Quark
|
| Quantum chemistry Quantum chemistry is a branch of theoretical chemistry, which applies quantum mechanics and quantum field theory to address issues and problems in chemistry. The description of the electronic behavior of atoms and molecules as pertaining to their reactivity is one of the applications of quantum chemistry. Quantum_chemistry
|
| Quantum field theory Quantum field theory or QFT provides a theoretical framework for constructing quantum mechanical models of systems classically described by fields or of many-body systems. It is widely used in particle physics and condensed matter physics. Most theories in modern particle physics, including the Standard Model of elementary particles and their interactions, are formulated as relativistic quantum field theories. Quantum_field_theory
|
| Quantum electrodynamics Quantum electrodynamics (QED) is a relativistic quantum field theory of electrodynamics. QED was developed by a number of physicists, beginning in the late 1920s. It basically describes how light and matter interact. More specifically it deals with the interactions between electrons, positrons and photons. Quantum_electrodynamics
|
| Richard Feynman Richard Phillips Feynman (; May 11, 1918 – February 15, 1988) was an American physicist known for the path integral formulation of quantum mechanics, the theory of quantum electrodynamics and the physics of the superfluidity of supercooled liquid helium, as well as work in particle physics (he proposed the parton model). Richard_Feynman
|
| Radium Radium () is a radioactive chemical element which has the symbol Ra and atomic number 88. Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. Radium is an alkaline earth metal that is found in trace amounts in uranium ores. It is extremely radioactive. Its most stable isotope, ''half-life of 1602 years and decays into radon gas. Radium
|
| RNA Ribonucleic acid (RNA) is a type of molecule that consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA, but differs in a few important structural detailsdeoxyribose (a type of ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in DNA.RNA is transcribed from DNA by enzymes called RNA polymerases and is generally further processed by other enzymes. RNA
|
| RNA world hypothesis RNA world hypothesis proposes that a world filled with life based on ribonucleic acid (RNA) predates the current world of life based on deoxyribonucleic acid (DNA). RNA, which can both store information like DNA and act as an enzyme, may have supported cellular or pre-cellular life. Some hypotheses as to the origin of life present RNA-based catalysis and information storage as the first step in the evolution of cellular life. RNA_world_hypothesis
|
| Richard Smalley Richard Errett Smalley (June 6, 1943 – October 28, 2005) was the Gene and Norman Hackerman Professor of Chemistry and a Professor of Physics and Astronomy at Rice University, in Houston, Texas. He was awarded the Nobel Prize in Chemistry in 1996 for the discovery of a new form of carbon, buckminsterfullerene ("buckyballs") (with Robert Curl, also a professor of chemistry at Rice, and Harold Kroto, a professor at the University of Sussex). Richard_Smalley
|
| Robert Curl Robert Floyd Curl, Jr. (born August 23, 1933) the son of a Methodist Minister is an emeritus professor of chemistry at Rice University. Nobel Prize in Chemistry in 1996 for the discovery of fullerene (with the late Richard Smalley, also of Rice University, and Harold Kroto of the University of Sussex).Born in Alice, Texas, United States, Curl received a B.A. Robert_Curl
|
| Road road is an identifiable route, way or path between places. Roads are typically smoothed, paved, or otherwise prepared to allow easy travel; though they need not be, and historically many roads were simply recognizable routes without any formal construction or maintenance. Road
|
| Rudolf Steiner Rudolf Steiner (25 or 27 February 1861 – 30 March 1925), an Austrian philosopher, educator, architect, social thinker, and esotericist, gained initial recognition as a literary critic and cultural philosopher. At the beginning of the twentieth century he founded a new spiritual movement, Anthroposophy, as an esoteric philosophy growing out of European transcendentalist roots with links to Theosophy. Rudolf_Steiner
|
| Restriction enzyme restriction enzyme (or restriction endonuclease) is an enzyme that cuts double-stranded or single stranded DNA at specific recognition nucleotide sequences known as restriction sites. Such enzymes, found in bacteria and archaea, are thought to have evolved to provide a defense mechanism against invading viruses. Restriction_enzyme
|
| Rudyard Kipling Joseph Rudyard Kipling (30 December 1865author and poet. Born in Bombay, British India (now Mumbai), he is best known for his works of fiction The Jungle Book (1894), (a collection of stories which includes Rikki-Tikki-Tavi), Kim (1901) (a tale of adventure), many short stories, including The Man Who Would Be King (1888); and his poems, including Mandalay (1890), Gunga Din (1890), and If— (1910). Rudyard_Kipling
|
| Ronald Coase Ronald Harry Coase (born 29 December 1910) is a British economist and the Clifton R. Musser Professor Emeritus of Economics at the University of Chicago Law School. After studying with the University of London External Programme in 1927-29, Coase entered the London School of Economics where he took courses with Arnold Plant. Ronald_Coase
|
| Richard R. Ernst Richard Robert Ernst (born August 14, 1933) is a Swiss physical chemist and Nobel Laureate.Born in Winterthur, Switzerland, Ernst was awarded the Nobel Prize in Chemistry in 1991 for his contributions towards the development of Fourier Transform nuclear magnetic resonance spectroscopy while at Varian Associates, Palo Alto and the subsequent development of multi-dimensional NMR techniques. Richard_R._Ernst
|
| Roald Hoffmann Roald Hoffmann (born July 18, 1937) is a Polish-American theoretical chemist who won the 1981 Nobel Prize in Chemistry. He currently teaches at Cornell University in Ithaca, New York. Roald_Hoffmann
|
| Ragnar Anton Kittil Frisch Ragnar Anton Kittil Frisch (March 3, 1895 January 31, 1973) was a Norwegian economist. Ragnar_Anton_Kittil_Frisch
|
| Star A star is a massive, luminous ball of plasma that is held together by gravity. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in the night sky, when they are not outshone by the Sun. Historically, the most prominent stars on the celestial sphere were grouped together into constellations, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations. Star
|
| South Korea South_Korea
|
| Samuel Beckett Samuel Barclay Beckett (13 April 1906 – 22 December 1989) was an Irish writer, dramatist and poet. Beckett's work offers a bleak outlook on human culture and both formally and philosophically became increasingly minimalist. As a student, assistant, and friend of James Joyce, Beckett is considered by many one of the last modernists; as an inspiration to many later writers, he is sometimes considered one of the first postmodernists. Samuel_Beckett
|
| Samuel Beckett Talk:Samuel_Beckett
|
| Solar neutrino problem Solar_neutrino_problem
|
| Scanning tunneling microscope Scanning tunneling microscopy (STM) is a powerful technique for viewing surfaces at the atomic level. Its development in 1981 earned its inventors, Gerd Binnig and Heinrich Rohrer (at IBM Zürich), the Nobel Prize in Physics in 1986. STM probes the density of states of a material using tunneling current. Scanning_tunneling_microscope
|
| Stem cell Stem cells are cells found in most, if not all, multi-cellular organisms. They are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types. Research in the stem cell field grew out of findings by Canadian scientists Ernest A. McCulloch and James E. Till in the 1960s. embryonic stem cells that are isolated from the inner cell mass of blastocysts, and adult stem cells that are found in adult tissues. In a Stem_cell
|
| Scurvy Scurvy is a disease resulting from a deficiency of vitamin C, which is required for the synthesis of collagen in humans. The chemical name for vitamin C, ascorbic acid, is derived from the Latin name of scurvy, scorbutus. Scurvy leads to the formation of spots on the skin, spongy gums, and bleeding from the mucous membranes. Scurvy
|
| Saul Bellow Saul Bellow (June 10, 1915 – April 5, 2005) was a Canadian-born American writer of Russian-Jewish origin. For his literary contributions, Bellow was awarded the Pulitzer Prize, the Nobel Prize for Literature, and the National Medal of Arts. He is the only writer to have won the National Book Award three times, and the only writer to have been nominated for it six times. Saul_Bellow
|
| Sandinista National Liberation Front The Sandinista National Liberation Front (, or FSLN) is a socialist political party in Nicaragua. Its members are called Sandinistas in both English and Spanish. The party is named after Augusto César Sandino who led the Nicaraguan resistance against the United States occupation of Nicaragua in the 1930s.The FSLN overthrew Anastasio Somoza Debayle in 1979, ending the Somoza dynasty and established a revolutionary government in its place. Sandinista_National_Liberation_Front
|
| Solar cell solar cell or photovoltaic cell is a device that converts light directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the light source is unspecified. Solar_cell
|
| Shmuel Yosef Agnon Shmuel Yosef Agnon (Hebrew:שמואל יוסף עגנון, July 17, 1888 - February 17, 1970) was a Nobel Prize laureate writer and was one of the central figures of modern Hebrew fiction. In Hebrew, he is known by the acronym Shai Agnon. In English, his works are published under the name S. Shmuel_Yosef_Agnon
|
| Transistor In electronics, a transistor is a semiconductor device commonly used to amplify or switch electronic signals. A transistor is made of a solid piece of a semiconductor material, with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals. Transistor
|
| Thomas Mann Thomas_Mann
|
| T. S. Eliot Thomas Stearns Eliot, OM (26 September 1888–4 January 1965), was a poet, playwright and literary critic. He received the Nobel Prize in Literature in 1948. Among his most famous writings are the poems The Love Song of J. Alfred Prufrock, The Waste Land, The Hollow Men, Ash Wednesday and Four Quartets; the plays Murder in the Cathedral and The Cocktail Party; and the essay "Tradition and the Individual Talent". T._S._Eliot
|
| Theodore Roosevelt Theodore D. Roosevelt (; October 27, 1858 January 6, 1919), also known as T.R., and to the public (but never to friends and intimates) as Teddy, was the 26th President of the United States. A leader of the Republican Party and of the Progressive Party, he was a Governor of New York and a professional historian, naturalist, explorer, hunter, author, and soldier. He is most famous for his personalityteddy bears are named after him. Theodore_Roosevelt
|
| Tuberculosis Tuberculosis (abbreviated as TB for tubercle bacillus or Tuberculosis) is a common and often deadly infectious disease caused by mycobacteria, in humans mainly Mycobacterium tuberculosis . Tuberculosis usually attacks the lungs (as pulmonary TB) but can also affect the central nervous system, the lymphatic system, the circulatory system, the genitourinary system, the gastrointestinal system, bones, joints, and even the skin. Tuberculosis
|
| Osmotic pressure Osmotic pressure is the hydrostatic pressure produced by a difference in concentration between solutions on the two sides of a surface such as a semipermeable membrane. Jacobus Henricus van 't Hoff first proposed a formula for calculating the osmotic pressure, but this was later improved upon by Harmon Northrop Morse.A related notion, osmotic potential is the opposite of water potential, with the former meaning the degree to which a solvent (usually water) would want to stay in a liquid. Osmotic_pressure
|
| Thomas Hunt Morgan Thomas Hunt Morgan (September 25, 1866 December 4, 1945) was an American geneticist and embryologist. Morgan received his PhD from Johns Hopkins University in 1890 and researched embryology during his tenure at Bryn Mawr. Following the rediscovery of Mendelian inheritance in 1900, Morgan's research moved to the study of mutation in the fruit fly Drosophila melanogaster. Thomas_Hunt_Morgan
|
| Transistor Talk:Transistor
|