Rafael Bombelli. 16th century Italian mathematician Thank you, dear donor! Your generosity helps keep Wikipedia thriving. Select "hide appeals" to suppress fundraising messages in this browser for a week, or go back to the appeal if you're still interested in donating. Wikipedia is not for sale. Please don't skip this 1 minute read. This WednesdayDecember 21st, our nonprofit humbly asks for your support. It matters. Thank you! L'Algebra by Rafael Bombelli: frontispiece of the Bologna edition of 1579 Rafael Bombelli (baptised on 20 January 1526; died 1572)[a] was an Italian mathematician. He was the one who finally managed to address the problem with imaginary numbers. Life[edit] Rafael Bombelli was baptised on 20 January 1526[3] in Bologna, Papal States. Bombelli felt that none of the works on algebra by the leading mathematicians of his day provided a careful and thorough exposition of the subject.
Bombelli died in 1572 in Rome. Bombelli's Algebra[edit] Complex numbers[edit] given that Reputation[edit] with . . Richard Feynman. News. Muhammad ibn Zakariya al-Razi. Being endowed by nature with a comprehensive mind, Razi made fundamental and enduring contributions to various fields of science, which he recorded in over 200 manuscripts, and is particularly remembered for numerous advances in medicine through own observations and discoveries.[7] An early proponent of experimental medicine, he became a successful doctor; was appointed a court physician, and served as chief physician of Baghdad and Rey hospitals.[2][8] He was among the first to use Humoralism to distinguish one contagious disease from another and has been described as doctor's doctor,[9] the father of pediatrics,[10] and a pioneer of ophthalmology.
Biography[edit] Colophon of Razi's Book of Medicine. In his youth, Razi moved to Baghdad where he studied and practiced at the local bimaristan (hospital). He spent the last years of his life in his native Rey suffering from glaucoma. The lectures of Razi attracted many students. Contributions to medicine[edit] Smallpox vs. measles[edit] J. Robert Oppenheimer. Julius Robert Oppenheimer[note 1] (April 22, 1904 – February 18, 1967) was an American theoretical physicist and professor of physics at the University of California, Berkeley. He is among the persons who are often called the "father of the atomic bomb" for their role in the Manhattan Project, the World War II project that developed the first nuclear weapons. The first atomic bomb was detonated on July 16, 1945, in the Trinity test in New Mexico; Oppenheimer remarked later that it brought to mind words from the Bhagavad Gita: "Now I am become Death, the destroyer of worlds.
"[2][note 2] After the war he became a chief advisor to the newly created United States Atomic Energy Commission and used that position to lobby for international control of nuclear power to avert nuclear proliferation and an arms race with the Soviet Union. Early life[edit] Childhood and education[edit] Studies in Europe[edit] In 1924 Oppenheimer was informed that he had been accepted into Christ's College, Cambridge. Born–Oppenheimer approximation. In quantum chemistry, the computation of the energy and the wavefunction of an average-size molecule is a formidable task that is alleviated by the Born–Oppenheimer (BO) approximation, named after Max Born and J.
Robert Oppenheimer. For instance the benzene molecule consists of 12 nuclei and 42 electrons. The time independent Schrödinger equation, which must be solved to obtain the energy and wavefunction of this molecule, is a partial differential eigenvalue equation in 162 variables—the spatial coordinates of the electrons and the nuclei. The BO approximation makes it possible to compute the wavefunction in two less complicated consecutive steps. In basic terms, it allows the wavefunction of a molecule to be broken into its electronic and nuclear (vibrational, rotational) components.
In the first step of the BO approximation the electronic Schrödinger equation is solved, yielding the wavefunction depending on electrons only. Short description[edit] The electronic Schrödinger equation and. Max Born. Author Query Results. Sign on SAO/NASA Astrophysics Data System (ADS) or select individual records above for the retrieval options below Retrieve the above records in other formats or sort order To retrieve all records above, use the "Select All Records" button above. Find papers related to the above articles (Sort by ) To get lists for all records above, use the "Select All Records" button above.
Get next set of references Query Parameters: Max born.