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Mesklinite
Mesklin is a fictional planet created by Hal Clement and used in a number of his hard science fiction stories, starting with ''Mission of Gravity'' (1954). Alongside the novel's original 1953 serialization in ''Astounding Science Fiction'', Clement published an essay titled "Whirligig World" detailing the process of designing the planet to have the properties he wanted. The idea came from an object that was at the time believed to exist in the 61 Cygni system, and which might represent an extrasolar planet. The planet Mesklin is distinctive for the interaction of its strong gravity with the centrifugal force due to its fast rotation, giving it a gradient in the perceived force of gravity from 3 '' g'' on the equator to 665 ''g'' on the planet's poles. It is inhabited by native lifeforms, including an intelligent centipede-like species, the Mesklinites. Mesklin is considered a prototypical example of hard science fiction worldbuilding, an exotic milieu that nevertheless accords ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesklin Diagrams
Mesklin is a fictional planet created by Hal Clement and used in a number of his hard science fiction stories, starting with ''Mission of Gravity'' (1954). Alongside the novel's original 1953 Serial (literature), serialization in ''Astounding Science Fiction'', Clement published an essay titled "Whirligig World" detailing the process of designing the planet to have the properties he wanted. The idea came from an object that was at the time believed to exist in the 61 Cygni system, and which might represent an extrasolar planet. The planet Mesklin is distinctive for the interaction of its strong gravity with the centrifugal force due to its fast rotation, giving it a gradient in the perceived force of gravity from 3 ''Gravity of Earth, g'' on the equator to 665 ''g'' on the planet's poles. It is inhabited by Extraterrestrial life, native lifeforms, including an intelligent centipede-like species, the Mesklinites. Mesklin is considered a prototypical example of hard science fictio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hal Clement
Harry Clement Stubbs (May 30, 1922 – October 29, 2003), better known by the pen name Hal Clement, was an American people, American science fiction writer and a leader of the hard science fiction subgenre. He also painted astronomically oriented artworks under the name George Richard. In 1998, Clement was inducted into the EMP Museum#Science Fiction and Fantasy Hall of Fame, Science Fiction and Fantasy Hall of Fame. He was named the 17th SFWA Grand Master by the Science Fiction and Fantasy Writers of America in 1999. Biography Harry Clement Stubbs was born in Somerville, Massachusetts, on May 30, 1922. He went to Harvard University, Harvard, graduating with a B.S. in astronomy in 1943. While there he wrote his first published story, "Proof", which appeared in the June 1942 issue of ''Astounding Science Fiction'', edited by John W. Campbell; three more appeared in later 1942 numbers. His further educational background includes an M.Ed. (Boston University 1946) and M.S. in che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mission Of Gravity
Mission (from Latin 'the act of sending out'), Missions or The Mission may refer to: Geography Australia *Mission River (Queensland) Canada *Mission, British Columbia, a district municipality *Mission, Calgary, Alberta, a neighbourhood *Okanagan Mission, a neighbourhood in Kelowna, British Columbia, commonly called "the Mission" *Mission River, a short river located at the delta of the Kaministiquia River of northern Ontario, Canada *Mission Ridge (British Columbia), a ridge in BC *Mission Ridge Ski Area, a Ski Area near the ridge in BC *Mission Lake, a lake in Saskatchewan United States * Mission, Delaware, an unincorporated community * Mission, Kansas, a city * Mission, Michigan, an unincorporated community * Mission, Minnesota, an unincorporated community * Mission, Oregon, an unincorporated community and census-designated place * Mission, South Dakota, a city * Mission, Texas, a city * Mission District, San Francisco, a neighborhood in San Francisco, California, commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenwood Press
Greenwood Publishing Group, Inc. (GPG) was an educational and academic publisher (middle school through university level) which was part of ABC-Clio. Since 2021, ABC-Clio and its suite of imprints, including GPG, are collectively imprints of British publishing house Bloomsbury Publishing. The Greenwood name stopped being used for new books in 2023. Established in 1967 as Greenwood Press, Inc., and based in Westport, Connecticut, GPG published reference works under its Greenwood Press imprint; and scholarly, professional, and general-interest books under its related imprint, Praeger Publishers (). Also part of GPG was Libraries Unlimited, which published professional works for librarians and teachers. Both of the latter became stand-alone imprints of ABC-Clio, in 2008–2009, after its purchase of GPG. History 1967–1999 The company was founded as Greenwood Press, Inc. (GPI) in 1967 by Harold Mason, a librarian and antiquarian bookseller, and Harold Schwartz, who had a backg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Degenerate Matter
Degenerate matter occurs when the Pauli exclusion principle significantly alters a state of matter at low temperature. The term is used in astrophysics to refer to dense stellar objects such as white dwarfs and neutron stars, where thermal pressure alone is not enough to prevent gravitational collapse. The term also applies to metals in the Fermi gas approximation. Degenerate matter is usually modelled as an ideal Fermi gas, an ensemble of non-interacting fermions. In a quantum mechanical description, particles limited to a finite volume may take only a discrete set of energies, called quantum states. The Pauli exclusion principle prevents identical fermions from occupying the same quantum state. At lowest total energy (when the thermal energy of the particles is negligible), all the lowest energy quantum states are filled. This state is referred to as full degeneracy. This degeneracy pressure remains non-zero even at absolute zero temperature.see http://apod.nasa.gov/apod/ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Core
A planetary core consists of the innermost layers of a planet. Cores may be entirely liquid, or a mixture of solid and liquid layers as is the case in the Earth. In the Solar System, core sizes range from about 20% (the Moon) to 85% of a planet's radius ( Mercury). Gas giants also have cores, though the composition of these are still a matter of debate and range in possible composition from traditional stony/iron, to ice or to fluid metallic hydrogen. Gas giant cores are proportionally much smaller than those of terrestrial planets, though they can be considerably larger than the Earth's nevertheless; Jupiter's is 10–30 times heavier than Earth, and exoplanet HD149026 b may have a core 100 times the mass of the Earth. Planetary cores are challenging to study because they are impossible to reach by drill and there are almost no samples that are definitively from the core. Thus, they are studied via indirect techniques such as seismology, mineral physics, and planetary dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinemann (publisher)
William Heinemann Ltd., with the imprint Heinemann, was a London-based publisher founded in 1890 by William Heinemann. Their first published book, 1890's ''The Bondman'', was a huge success in the United Kingdom and launched the company. He was joined in 1893 by Sydney Pawling. Heinemann died in 1920 and Pawling sold the company to Doubleday, having worked with them in the past to publish their works in the United States. Pawling died in 1922 and new management took over. Doubleday sold his interest in 1933. Through the 1920s, the company was well known for publishing works by famous authors that had previously been published as serials. Among these were works by H. G. Wells, Rudyard Kipling, W. Somerset Maugham, George Moore, Max Beerbohm and Henry James, among others. This attracted new authors to publish their first editions with the company, including Graham Greene, Edward Upward, J. B. Priestley and Vita Sackville-West. Throughout, the company was also known for i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diameter Of Earth
Earth radius (denoted as ''R''🜨 or ''R''E) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted ''a'') of about to a minimum (polar radius, denoted ''b'') of nearly . A globally-average value is usually considered to be with a 0.3% variability (±10 km) for the following reasons. The International Union of Geodesy and Geophysics (IUGG) provides three reference values: the ''mean radius'' (''R'') of three radii measured at two equator points and a pole; the ''authalic radius'', which is the radius of a sphere with the same surface area (''R''); and the ''volumetric radius'', which is the radius of a sphere having the same volume as the ellipsoid (''R''). All three values are about . Other ways to define and measure the Earth's radius involve either the spheroid's radius of curvature or the actual topography. A few ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equatorial Bulge
An equatorial bulge is a difference between the equatorial and polar diameters of a planet, due to the centrifugal force exerted by the rotation about the body's axis. A rotating body tends to form an oblate spheroid rather than a sphere. On Earth The planet Earth has a rather slight equatorial bulge; its equatorial diameter is about greater than its polar diameter, with a difference of about of the equatorial diameter. If Earth were scaled down to a globe with an equatorial diameter of , that difference would be only . While too small to notice visually, that difference is still more than twice the largest deviations of the actual surface from the ellipsoid, including the tallest mountains and deepest oceanic trenches. Earth's rotation also affects the sea level, the imaginary surface used as a reference frame from which to measure altitudes. This surface coincides with the mean water surface level in oceans, and is extrapolated over land by taking into account the loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotation Period (astronomy)
In astronomy, the rotation period or spin period of a celestial object (e.g., star, planet, moon, asteroid) has two definitions. The first one corresponds to the ''sidereal rotation period'' (or ''sidereal day''), i.e., the time that the object takes to complete a full rotation around its axis relative to the background stars (inertial space). The other type of commonly used "rotation period" is the object's ''synodic rotation period'' (or ''solar day''), which may differ, by a fraction of a rotation or more than one rotation, to accommodate the portion of the object's orbital period around a star or another body during one day. Measuring rotation For solid objects, such as rocky planets and asteroids, the rotation period is a single value. For gaseous or fluid bodies, such as stars and giant planets, the period of rotation varies from the object's equator to its pole due to a phenomenon called differential rotation. Typically, the stated rotation period for a giant planet (such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Scribner's Sons
Charles Scribner's Sons, or simply Scribner's or Scribner, is an American publisher based in New York City that has published several notable American authors, including Henry James, Ernest Hemingway, F. Scott Fitzgerald, Kurt Vonnegut, Marjorie Kinnan Rawlings, Stephen King, Robert A. Heinlein, Thomas Wolfe, George Santayana, John Clellon Holmes, Don DeLillo, and Edith Wharton. The firm published ''Scribner's Magazine'' for many years. More recently, several Scribner titles and authors have garnered Pulitzer Prize, Pulitzer Prizes, National Book Award, National Book Awards and other merits. In 1978, the company merged with Atheneum Books, Atheneum and became The Scribner Book Companies. It merged into Macmillan Inc., Macmillan in 1984. Simon & Schuster bought Macmillan in 1994. By this point, only the trade book and reference book operations still bore the original family name. After the merger, the Macmillan and Atheneum adult lists were merged into Scribner's, and the Scribn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harper & Row
Harper is an American publishing house, the flagship imprint of global publisher HarperCollins, based in New York City. Founded in New York in 1817 by James Harper and his brother John, the company operated as J. & J. Harper until 1833, when it changed its name to Harper & Brothers, reflecting the inclusion of Joseph and Fletcher Harper. Harper began publishing ''Harper's Magazine'', ''Harper's Weekly'', and other periodicals beginning in the 1850s. From 1962 to 1990, the company was known as Harper & Row after its merger with Row, Peterson & Company. Harper & Row was purchased in 1987 by News Corporation and combined with William Collins, Sons, its United Kingdom counterpart, in 1990 to form HarperCollins, although the Harper name has been used in its place since 2007. History J. & J. Harper (1817–1833) James Harper and his brother John, printers by training, started their book publishing business, J. & J. Harper, in New York City in 1817. Their two brothers, Joseph Wesl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
