Thomson scatteringThomson scattering is the elastic scattering of electromagnetic radiation by a free charged particle, as described by classical electromagnetism. It is the low-energy limit of Compton scattering: the particle's kinetic energy and photon frequency do not change as a result of the scattering. This limit is valid as long as the photon energy is much smaller than the mass energy of the particle: , or equivalently, if the wavelength of the light is much greater than the Compton wavelength of the particle (e.g.
CD-ROMA CD-ROM (ˌsiːdiːˈrɒm, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains data. Computers can read—but not write or erase—CD-ROMs. Some CDs, called enhanced CDs, hold both computer data and audio with the latter capable of being played on a CD player, while data (such as software or digital video) is only usable on a computer (such as ISO 9660 format PC CD-ROMs).
The Last LectureThe Last Lecture is a 2008 New York Times best-selling book co-authored by Randy Pausch —a professor of computer science, human-computer interaction, and design at Carnegie Mellon University in Pittsburgh, Pennsylvania—and Jeffrey Zaslow of the Wall Street Journal. The book extends the September 2007 lecture by Pausch entitled "Really Achieving Your Childhood Dreams". The Last Lecture is renowned for its witty humor, despite encompassing Pausch's farewell to his loved ones due to his terminal pancreatic cancer.
Halley LecturesThe Halley Lectures are a series of annual public lectures hosted by the University of Oxford, in memory of the astronomer Edmond Halley. Currently, some podcasts of the lectures can be found through the Oxford Physics Public Lectures These lectures aim to promote public understanding and engagement with science, mathematics, and related fields, and to inspire new generations of researchers and students to pursue careers in these areas.
Mie scatteringThe Mie solution to Maxwell's equations (also known as the Lorenz–Mie solution, the Lorenz–Mie–Debye solution or Mie scattering) describes the scattering of an electromagnetic plane wave by a homogeneous sphere. The solution takes the form of an infinite series of spherical multipole partial waves. It is named after Gustav Mie. The term Mie solution is also used for solutions of Maxwell's equations for scattering by stratified spheres or by infinite cylinders, or other geometries where one can write separate equations for the radial and angular dependence of solutions.
Brillouin scatteringBrillouin scattering (also known as Brillouin light scattering or BLS), named after Léon Brillouin, refers to the interaction of light with the material waves in a medium (e.g. electrostriction and magnetostriction). It is mediated by the refractive index dependence on the material properties of the medium; as described in optics, the index of refraction of a transparent material changes under deformation (compression-distension or shear-skewing).
Rutherford scatteringIn particle physics, Rutherford scattering is the elastic scattering of charged particles by the Coulomb interaction. It is a physical phenomenon explained by Ernest Rutherford in 1911 that led to the development of the planetary Rutherford model of the atom and eventually the Bohr model. Rutherford scattering was first referred to as Coulomb scattering because it relies only upon the static electric (Coulomb) potential, and the minimum distance between particles is set entirely by this potential.
Scattering amplitudeIn quantum physics, the scattering amplitude is the probability amplitude of the outgoing spherical wave relative to the incoming plane wave in a stationary-state scattering process. The plane wave is described by the wavefunction where is the position vector; ; is the incoming plane wave with the wavenumber k along the z axis; is the outgoing spherical wave; θ is the scattering angle; and is the scattering amplitude. The dimension of the scattering amplitude is length.
Martin Classical LecturesThe Martin Classical Lectures is a function of the Charles Beebe Martin Foundation established at Oberlin College in Ohio. Charles Beebe Martin was a professor of Classics and classical archaeology at the College from 1880 to 1925. The foundation was set up to honor his memory. Lectures given at the foundation are collected and presented in volumes. Dates given are those of publication. Volume 1, Louis E.
The Unanswered Question (lecture series)The Unanswered Question is a lecture series given by Leonard Bernstein in the fall of 1973. This series of six lectures was a component of Bernstein's duties as the Charles Eliot Norton Professor of Poetry for the 1972/73 academic year at Harvard University, and is therefore often referred to as the Norton Lectures. The lectures were both recorded on video and printed as a book, titled The Unanswered Question: Six Talks at Harvard.
Compact discThe compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. In August 1982, the first compact disc was manufactured. It was then released in October 1982 in Japan and branded as Digital Audio Compact Disc. It was released on March 2, 1983 in North America and Europe. The format was later adapted (as CD-ROM) for general-purpose data storage.
Lecture RoomLecture Room is a Chinese television programme hosted by China Central Television (CCTV), in which scholars from various disciplines are invited to provide lectures. It was first broadcast on 9 July 2001 on CCTV-10. In its early days, featured topics included biology, physics, economics, history and literature, and the lecturers were from around the world. Its focus has gradually changed, as recent programmes focus more on Chinese history and Chinese culture. The show's title is literally translated as The Hundred Schools of Thought Forum.
