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Phocyllides Holwarda
Johannes Phocylides Holwarda (''Jan Fokkesz, Jan Fokker, Johann Holwarda, Johannes Fokkes Holwarda, Jan Fokkens Holwarda, Jan Fokkes van haylen'') (February 19, 1618—January 22, 1651) was a Frisian astronomer, physician, and philosopher. He was a professor of philosophy at the University of Franeker from 1639 to 1651. Born in Holwerd, he is best remembered for his discovery of the length of Mira's (Omicron Ceti's) varying appearance cycle. In a systematic study in 1638, he found that Mira disappeared and reappeared in a varying cycle of about 330 days. Holwarda was also a supporter of "atomism". His ''Philosophia Naturalis, seu Physica Vetus-Nova'', published posthumously in 1651, defines matter and form: matter is extended and divided into atoms while form is the texture of atoms. According to Phocylides, bodies are formed from atoms and a lack of atoms. Atoms, which he distinguished as simple or compound, are solid corpuscles that receive motion directly from God. The luna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Phocylides Holwarda
Johannes Phocylides Holwarda (''Jan Fokkesz, Jan Fokker, Johann Holwarda, Johannes Fokkes Holwarda, Jan Fokkens Holwarda, Jan Fokkes van haylen'') (February 19, 1618—January 22, 1651) was a Frisian astronomer, physician, and philosopher. He was a professor of philosophy at the University of Franeker from 1639 to 1651. Born in Holwerd, he is best remembered for his discovery of the length of Mira's (Omicron Ceti's) varying appearance cycle. In a systematic study in 1638, he found that Mira disappeared and reappeared in a varying cycle of about 330 days. Holwarda was also a supporter of "atomism". His ''Philosophia Naturalis, seu Physica Vetus-Nova'', published posthumously in 1651, defines matter and form: matter is extended and divided into atoms while form is the texture of atoms. According to Phocylides, bodies are formed from atoms and a lack of atoms. Atoms, which he distinguished as simple or compound, are solid corpuscles that receive motion directly from God. The luna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atoms
Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and a number of neutrons. Only the most common variety of hydrogen has no neutrons. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across. They are so small that accurately predicting their behavior using classical physics, as if they were tennis balls for example, is not possible due to quantum effects. More than 99.94% of an atom's mass is in the nucleus. The protons have a positive electric charge, the electrons have a negative electric charge, and the neutrons have no electric charge. If the number of protons and electrons are equal, then the atom is electrically neutral. If an atom has more or fewer electrons than protons, then it has an overall negative or positive charge, respectively – such atoms are called ions. The electrons of an atom are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frisian Scientists
Frisian most often refers to: * Frisia, a cross-border coastal region in Germany and the Netherlands ** Frisians, the medieval and modern ethnic group inhabiting Frisia ***Frisii, the ancient inhabitants of Frisia prior to 600 AD **Frisian languages, a group of West Germanic languages, including: ***Old Frisian, spoken in Frisia from the 8th to 16th Century ***Middle Frisian, spoken in Frisia from the 16th to 19th Century *** North Frisian language, spoken in Schleswig-Holstein, Germany ***Saterland Frisian language, spoken in Lower Saxony, Germany ***West Frisian language, spoken in Friesland, Netherlands ** Frisian cuisine, the traditional recipes and cooking methods of Frisia Frisian or Friesian may also refer to: Animal breeds *Friesian (chicken), a Dutch breed of chicken *East Friesian (sheep), a breed of sheep notable for its high production of milk *Friesian cross, a cross of the Friesian horse with any other breed *Friesian horse, a horse breed from Friesland *Friesian Spor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th-century Dutch Astronomers
The 17th century lasted from January 1, 1601 ( MDCI), to December 31, 1700 ( MDCC). It falls into the early modern period of Europe and in that continent (whose impact on the world was increasing) was characterized by the Baroque cultural movement, the latter part of the Spanish Golden Age, the Dutch Golden Age, the French ''Grand Siècle'' dominated by Louis XIV, the Scientific Revolution, the world's first public company and megacorporation known as the Dutch East India Company, and according to some historians, the General Crisis. From the mid-17th century, European politics were increasingly dominated by the Kingdom of France of Louis XIV, where royal power was solidified domestically in the civil war of the Fronde. The semi-feudal territorial French nobility was weakened and subjugated to the power of an absolute monarchy through the reinvention of the Palace of Versailles from a hunting lodge to a gilded prison, in which a greatly expanded royal court could be more easil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Christians
Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People Ethnic groups * Germanic peoples, the original meaning of the term ''Dutch'' in English ** Pennsylvania Dutch, a group of early Germanic immigrants to Pennsylvania *Dutch people, the Germanic group native to the Netherlands Specific people * Dutch (nickname), a list of people * Johnny Dutch (born 1989), American hurdler * Dutch Schultz (1902–1935), American mobster born Arthur Simon Flegenheimer * Dutch Mantel, ring name of American retired professional wrestler Wayne Maurice Keown (born 1949) * Dutch Savage, ring name of professional wrestler and promoter Frank Stewart (1935–2013) Arts, entertainment, and media Fictional characters * Dutch (''Black Lagoon''), an African-American character from the Japanese manga and anime ''Blac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1651 Deaths
Events January–March * January 1 – Charles II is crowned King of Scots at Scone ( his first crowning). * January 24 – Parliament of Boroa in Chile: Spanish and Mapuche authorities meet at Boroa, renewing the fragile peace established at the parliaments of Quillín, in 1641 and 1647. * February 22 – St. Peter's Flood: A first storm tide in the North Sea strikes the coast of Germany, drowning thousands. The island of Juist is split in half, and the western half of Buise is probably washed away. * March 4 – St. Peter's Flood: Another storm tide in the North Sea strikes the Netherlands, flooding Amsterdam. * March 6 – The town of Kajaani was founded by Count Per Brahe the Younger. * March 15 – Prince Aisin Gioro Fulin attains the age of 13 and becomes the Shunzhi Emperor of China, which had been governed by a regency since the death of his father Hong Taiji in 1643. * March 26 – The Spanish ship ''San José'', loaded wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1618 Births
Events January–June * February 26 – Osman II deposes his uncle Mustafa I as Ottoman sultan (until 1622). * March 8 – Johannes Kepler discovers the third law of planetary motion (after some initial calculations, he soon rejects the idea, but on May 15 confirms the discovery). * April 21 – Spanish-born Jesuit missionary Pedro Páez becomes (probably) the first European to see and describe the source of the Blue Nile in Ethiopia. * May 23 – The Second Defenestration of Prague – Protestant noblemen hold a mock trial, and throw two direct representatives of Ferdinand II of Germany (Imperial Governors) and their scribe out of a window into a pile of manure, exacerbating a low-key rebellion into the Bohemian Revolt (1618–1621), precipitating the Thirty Years' War into armed conflict, and further polarizing Europe on religious grounds. * June 14 – Joris Veseler prints the first Dutch newspaper '' Courante uyt Italien, Duytslandt, &c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phocylides (crater)
Phocylides is a lunar impact crater located near the southwest rim of the Moon. It overlays the south rim of the crater Nasmyth to the north. To the northwest is the unusual plateau formation of Wargentin. Eastward is the merged formation Schiller, and in the southwest lies Pingré. The outer wall of Phocylides is worn and eroded, especially along the western edge. The northern edge of the rim is notched and irregular, with a rise of ground joining the south rim of Wargentin. The crater Phocylides F lies across the southern rim. The floor of Phocylides is flooded and relatively smooth, with a few small craterlets and no central peak. The most notable impact on the floor is a crater near the northeast rim. Phocylides lies to the northwest of the Schiller-Zucchius Basin The Schiller-Zucchius Basin is a Pre-Nectarian impact basin on the near side of the moon. It is named after the elongated crater Schiller at the northeast margin and fresh crater Zucchius near the southwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Crater
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Lunar impact craters range from microscopic craters on lunar rocks returned by the Apollo Program and small, simple, bowl-shaped depressions in the lunar regolith to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth. Impact craters are the dominant geographic features on many solid Solar System objects including the Moon, Mercury, Callisto, Ganymede and most small moons and asteroids. On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Europa, Io and Titan, visible impact craters are less common because they become eroded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matter
In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, "matter" generally includes atoms and anything made up of them, and any particles (or combination of particles) that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or heat. Matter exists in various states (also known as phases). These include classical everyday phases such as solid, liquid, and gas – for example water exists as ice, liquid water, and gaseous steam – but other states are possible, including plasma, Bose–Einstein condensates, fermionic condensates, and quark–gluon plasma. Usually atoms can be imagined as a nucleus of protons and neutrons, and a surro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Publishing
Springer Publishing Company is an American publishing company of academic journals and books, focusing on the fields of nursing, gerontology, psychology, social work, counseling, public health, and rehabilitation (neuropsychology). It was established in 1951 by Bernhard Springer, a great-grandson of Julius Springer, and is based in Midtown Manhattan, New York City. History Springer Publishing Company was founded in 1950 by Bernhard Springer, the Berlin-born great-grandson of Julius Springer, who founded Springer-Verlag (now Springer Science+Business Media). Springer Publishing's first landmark publications included ''Livestock Health Encyclopedia'' by R. Seiden and the 1952 ''Handbook of Cardiology for Nurses''. The company's books soon branched into other fields, including medicine and psychology. Nursing publications grew rapidly in number, as Modell's ''Drugs in Current Use'', a small annual paperback, sold over 150,000 copies over several editions. Solomon Garb's ''Labor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomism
Atomism (from Greek , ''atomon'', i.e. "uncuttable, indivisible") is a natural philosophy proposing that the physical universe is composed of fundamental indivisible components known as atoms. References to the concept of atomism and its atoms appeared in both ancient Greek and ancient Indian philosophical traditions. Leucippus is the earliest figure whose commitment to atomism is well attested and he is usually credited with inventing atomism. He and other ancient Greek atomists theorized that nature consists of two fundamental principles: ''atom'' and ''void''. Clusters of different shapes, arrangements, and positions give rise to the various macroscopic substances in the world.Berryman, Sylvia, "Ancient Atomism", ''The Stanford Encyclopedia of Philosophy'' (Fall 2008 Edition), Edward N. Zalta (ed.)online/ref> The particles of chemical matter for which chemists and other natural philosophers of the early 19th century found experimental evidence were thought to be indivisibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
