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Great Comet Of 1556
The Great Comet of 1556 (designated C/1556 D1 in modern nomenclature) was a comet that first appeared in February 1556, and which was observed throughout much of Europe. The comet appears to have been seen in some places before the end of February, but it was not generally observed until the middle of the first week in March. Its apparent diameter was equal to half that of the Moon, and the tail was said to resemble "the flame of a torch agitated by the wind." Cornelius Gemma (the son of Gemma Frisius) said that the head of the comet, when it first appeared, was as large as Jupiter, and that its color resembled that of Mars. The course of the comet of 1556 was observed by Paul Fabricius, a mathematician and physician at the court of Charles V, Holy Roman Emperor. Charles V comet The Great Comet of 1556 is called the comet of Charles V. When the Emperor first caught sight of it he stood aghast, and exclaimed: "By this dread sign my fates do summon me". Charles had long meditate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently bright, a comet may be seen from Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religions. Comets usually have highly eccentric elliptical orbits, and they have a wide range of orbital periods, ranging from several years to potentially several mill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antichrist
In Christian eschatology, the Antichrist refers to people prophesied by the Bible to oppose Jesus Christ and substitute themselves in Christ's place before the Second Coming. The term Antichrist (including one plural form) 1 John ; . 2 John . is found five times in the New Testament, solely in the First and Second Epistle of John. The Antichrist is announced as the one "who denies the Father and the Son." The similar term ''pseudokhristos'' or "false Christ" is also found in the Gospels. In Matthew (chapter 24) and Mark (chapter 13), Jesus alerts his disciples not to be deceived by the false prophets, who will claim themselves as being Christ, performing "great signs and wonders". Three other images often associated with the singular Antichrist are the "little horn" in Daniel's final vision, the "man of sin" in Paul the Apostle's Second Epistle to the Thessalonians, and the Beast of the Sea in the Book of Revelation. Etymology ''Antichrist'' is translated from the combin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1556 In Science
The year 1556 CE in science and technology included a number of events, some of which are listed here. Astronomy and earth sciences * January 23 – Shaanxi earthquake in China. * February – Great Comet of 1556 becomes visible in Europe. * Publication of Georgius Agricola's textbook on metal mining and processing, '' De re metallica'' (posthumously, at Basel). * Minas de Ríotinto in Huelva, Andalusia, rediscovered. Life sciences * Publication in Rome of Juan Valverde de Amusco's ''Historia de la composicion del cuerpo humano'', including Realdo Colombo's discovery of pulmonary circulation. * Publication of the standard reference work on marine animals, ''Libri de piscibus marinis in quibus verae piscium effigies expressae sunt'' by Guillaume Rondelet, Chancellor of the University of Montpellier; his anatomical drawing of a sea urchin is the earliest extant depiction of an invertebrate. Rondelet's ''Methodus de materia medicinali et compositione medicamentorum Palavii'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-periodic Comets
A periodic function is a function that repeats its values at regular intervals. For example, the trigonometric functions, which repeat at intervals of 2\pi radians, are periodic functions. Periodic functions are used throughout science to describe oscillations, waves, and other phenomena that exhibit periodicity. Any function that is not periodic is called aperiodic. Definition A function is said to be periodic if, for some nonzero constant , it is the case that :f(x+P) = f(x) for all values of in the domain. A nonzero constant for which this is the case is called a period of the function. If there exists a least positive constant with this property, it is called the fundamental period (also primitive period, basic period, or prime period.) Often, "the" period of a function is used to mean its fundamental period. A function with period will repeat on intervals of length , and these intervals are sometimes also referred to as periods of the function. Geometrically, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Elements
Orbital elements are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are considered in two-body systems using a Kepler orbit. There are many different ways to mathematically describe the same orbit, but certain schemes, each consisting of a set of six parameters, are commonly used in astronomy and orbital mechanics. A real orbit and its elements change over time due to gravitational perturbations by other objects and the effects of general relativity. A Kepler orbit is an idealized, mathematical approximation of the orbit at a particular time. Keplerian elements The traditional orbital elements are the six Keplerian elements, after Johannes Kepler and his laws of planetary motion. When viewed from an inertial frame, two orbiting bodies trace out distinct trajectories. Each of these trajectories has its focus at the common center of mass. When viewed from a non-inertial frame centered on one of the bodies, only the traj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perihelion
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any elliptic orbit. The name for each apsis is created from the prefixes ''ap-'', ''apo-'' (), or ''peri-'' (), each referring to the farthest and closest point to the primary body the affixing necessary suffix that describes the primary body in the orbit. In this case, the suffix for Earth is ''-gee'', so the apsides' names are ''apogee'' and ''perigee''. For the Sun, its suffix is ''-helion'', so the names are ''aphelion'' and ''perihelion''. According to Newton's laws of motion, all periodic orbits are ellipses. The barycenter of the two bodies may lie well within the bigger body—e.g., the Earth–Moon barycenter is about 75% of the way from Earth's center to its surface. If, compared to the larger mass, the smaller mass is negligible (e.g., f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Dunthorne
Richard Dunthorne (1711 – 3 March 1775) was an English astronomer and surveyor, who worked in Cambridge as astronomical and scientific assistant to Roger Long (master of Pembroke Hall and Lowndean Professor of Astronomy and Geometry), Library of St John's College, Cambridge, 2008; and Philosophical Transactions (Abridgement Series) (1809). and also concurrently for many years as surveyor to the Bedford Level Corporation. Life and work There are short biographical notes of Dunthorne, one in the Philosophical Transactions (Abridgement Series, published 1809) (unsigned), Philosophical Transactions (Abridgement Series) (1809). another in the 'Dictionary of National Biography' (vol.16), and a third by W T Lynn. Dunthorne was born in humble circumstances in Ramsey, Cambridgeshire, where he attended the free grammar school. There he attracted the notice of Roger Long (later Master of Pembroke Hall, Cambridge), whose protégé Dunthorne became. Dunthorne moved to Cambridge where Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Russell Hind
John Russell Hind FRS FRSE LLD (12 May 1823 – 23 December 1895) was an English astronomer. Life and work John Russell Hind was born in 1823 in Nottingham, the son of lace manufacturer John Hind and Elizabeth Russell, and was educated at Nottingham High School. At age 17 he went to London to serve an apprenticeship as a civil engineer, but through the help of Charles Wheatstone he left engineering to accept a position at the Royal Observatory, Greenwich under George Biddell Airy. Hind remained there from 1840 to 1844, at which time he succeeded W. R. Dawes as director of the private George Bishop's Observatory. In 1853 Hind became Superintendent of the Nautical Almanac, a position he held until 1891. Hind is notable for being one of the early discoverers of asteroids. He also discovered and observed the variable stars R Leporis (also known as Hind's Crimson Star), U Geminorum, and T Tauri (also called Hind's Variable Nebula), and discovered the variability of μ Cephei. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Comet Of 1264
The Great Comet of 1264 (C/1264 N1) was one of the brightest comets on record. It appeared in July 1264 and remained visible to the end of September. It was first seen during the evenings after sunset, but appeared in its greatest splendor in weeks afterward, when it became visible during the mornings in the northeastern sky, with the tail perceived long before the comet itself rose above the horizon. The head of the comet seemed like an obscure and ill-defined star, and the tail passed from this portion of it like expanded flames, stretching forth towards the mid-heavens to a distance of one hundred degrees from the nucleus. The comet of 1264 was described to have been an object of great size and brilliancy. The comet's splendor was greatest at the end of August and the beginning of September. At that time, when the head was just visible above the eastern horizon in the morning sky, the tail stretched out past the mid-heaven towards the west, or was nearly 100° in length. The chr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conrad Lycosthenes
Conrad Lycosthenes (8 August 151825 March 1561), born Conrad Wolffhart, was an Alsatian humanist and encyclopedist. Deacon of Saint Leonard in Basel, professor of grammar and dialectics, Lycosthenes had a passion for the study of nature and geophysics. Life Conrad Wolffhart was born in Rouffach in Alsace on 8 August 1518, the son of Theobald Wolffhart and Elizabeth Kürsner, sister of the Protestant theologian Conrad Pellicanus. He later changed his German name, Wolffhart, to the humanist name Lycosthenes. From 1535 to 1539, Conrad studied philosophy in Heidelberg. In 1542, he left Heidelberg for Basel where he began teaching Grammar and Dialectics. In 1545, at the age of 27, he became Deacon in the Church of Saint-Leonard. On 21 December 1554, he suffered from hemiplegia and lost the ability to use his right hand. He learned to write with his left hand and continued his literary works until his death from apoplexia on 25 March 1561 at the age of 43. In the meantime he had marr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Facial Chronicle - B
A facial is a family of skin care treatments for the face, including steam, exfoliation (physical and chemical), extraction, creams, lotions, facial masks, peels, and massage. They are normally performed in beauty salons, but are also a common spa treatment. They are used for general skin health as well as for specific skin conditions. Types of facials include European facial, LED light therapy facials, hydrafacials and mini-facials. Facial mask There are different kinds of masks (e.g., clay, cactus, cucumber) for different purposes: deep-cleansing, by penetrating the pores; healing acne scars or hyper-pigmentation; brightening, for a gradual illumination of the skin tone. Facial masks also help with anti-aging, acne, crows feet, under eye bags, sagging lids, dark circles, puffiness, and more. Some masks are designed to dry or solidify on the face, almost like plaster; others just remain wet. The perceived effects of a facial mask treatment include revitalizing, healing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1556 Shaanxi Earthquake
The 1556 Shaanxi earthquake (formerly romanized ''Shensi''), known in Chinese colloquially by its regnal year as "" ('' Jiājìng Dàdìzhèn'') or officially by its epicenter as "" ('' Huàxiàn Dìzhèn''), occurred in the early morning of 23 January 1556 in Huaxian, Shaanxi during the Ming dynasty. Most of the residents there lived in yaodongs—artificial caves in loess cliffs—which collapsed and buried alive those sleeping inside. Modern estimates put the direct deaths from the earthquake at over 100,000, while over 700,000 migrated away or died from famine and plagues, which summed up to a total loss of 830,000 people in Imperial records.颤抖的地球—地震科学' rembling Earth: On Seismology(2005). Researched by China Earthquake Administration seismologists 冯万鹏,薑文亮,龚丽霞,公茂盛,胡进军; Revised by CEA seismologists 王文清,续春荣,张宝红; Edited by CEA chiefs 谢礼立,张景发. Tsinghua University Press. Pages XIII, 162. "1556年陕 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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