|
History Of The Steam Engine
The first recorded rudimentary steam engine was the aeolipile mentioned by De Architectura#Roman technology, Vitruvius between 30 and 15 BC and, described by Heron of Alexandria in 1st-century Roman Egypt. Several steam-powered devices were later experimented with or proposed, such as Taqi al-Din Muhammad ibn Ma'ruf, Taqi al-Din's steam jack, a steam turbine in 16th-century Ottoman Egypt, Denis Papin, Denis Papin's working model of the steam digester in 1679 and Thomas Savery's steam pump in 17th-century England. In 1712, Thomas Newcomen's atmospheric engine became the first commercially successful engine using the principle of the piston and cylinder, which was the fundamental type of steam engine used until the early 20th century. The steam engine was used to pump water out of coal mines. During the Industrial Revolution, steam engines started to replace water and wind power, and eventually became the dominant source of power in the late 19th century and remaining so into the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Steam Technology
Advanced steam technology (sometimes known as modern steam) reflects an approach to the technical development of the steam engine intended for a wider variety of applications than has recently been the case. Particular attention has been given to endemic problems that led to the demise of steam power in small to medium-scale commercial applications: excessive pollution, maintenance costs, labour-intensive operation, low power/weight ratio, and low overall thermal efficiency. Steam power has generally been superseded by the internal combustion engine or by electrical power drawn from an electrical grid. The only steam installations that are in widespread use are the highly efficient thermal power plants used for generating electricity on a large scale. In contrast, the proposed steam engines may be for stationary, road, rail, or marine use. Improving steam traction Although most references to "Modern Steam" apply to developments since the 1970s, certain aspects of advanced s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islamic Philosophy
Islamic philosophy is philosophy that emerges from the Islamic tradition. Two terms traditionally used in the Islamic world are sometimes translated as philosophy—''falsafa'' (), which refers to philosophy as well as logic, mathematics, and physics; and ''kalam'' (), which refers to a Rationalism, rationalist form of Schools of Islamic theology#ʿIlm_al-Kalām, Scholastic Islamic theology which includes the schools of Maturidiyah, Ashari, Ashaira and Mu'tazila. Early Islamic philosophy began with al-Kindi in the 2nd century of the Islamic calendar (early 9th century CE) and ended with Averroes, Ibn Rushd (Averroes) in the 6th century AH (late 12th century CE), broadly coinciding with the period known as the Islamic Golden Age, Golden Age of Islam. The death of Averroes effectively marked the end of a specific discipline of Islamic philosophy usually called the Islamic peripatetic school, and philosophical activity declined significantly in the west of the Islamic world, includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Architonnerre
The Architonnerre (Architronito) was a steam-powered cannon, a description of which is found in the papers of Leonardo da Vinci dating to the late 15th century, although he attributes its invention to Archimedes in the 3rd century BC. Leonardo's description was hidden amongst his papers until it was rediscovered by Étienne-Jean Delécluze of the French Institute in 1838 and published in the magazine '' L'Artiste'' in 1841, well after the modern high pressure steam engine had been independently invented. Description of operation The following is the most likely means of operation from the description given. A conventional muzzle-loading cannon would have a strong metal tube connecting the vented end, where the fuse would normally be placed, to a copper boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo Da Vinci
Leonardo di ser Piero da Vinci (15 April 1452 - 2 May 1519) was an Italian polymath of the High Renaissance who was active as a painter, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially rested on his achievements as a painter, he has also become known for #Journals and notes, his notebooks, in which he made drawings and notes on a variety of subjects, including anatomy, astronomy, botany, cartography, painting, and palaeontology. Leonardo is widely regarded to have been a genius who epitomised the Renaissance humanism, Renaissance humanist ideal, and his List of works by Leonardo da Vinci, collective works comprise a contribution to later generations of artists matched only by that of his younger contemporary Michelangelo. Born out of wedlock to a successful notary and a lower-class woman in, or near, Vinci, Tuscany, Vinci, he was educated in Florence by the Italian painter and sculptor Andrea del Verrocchio. He began his career ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reims
Reims ( ; ; also spelled Rheims in English) is the most populous city in the French Departments of France, department of Marne (department), Marne, and the List of communes in France with over 20,000 inhabitants, 12th most populous city in France. The city lies northeast of Paris on the Vesle river, a tributary of the Aisne (river), Aisne. Founded by the Gauls, Reims became a major city in the Roman Empire. Reims later played a prominent ceremonial role in history of France, French monarchical history as the traditional site of the coronation of the kings of France. The royal anointing was performed at the Cathedral of Reims, which housed the Holy Ampulla of chrism allegedly brought by a white dove at the baptism of Frankish king Clovis I in 496. For this reason, Reims is often referred to in French as ("the Coronation City"). Reims is recognized for the diversity of its heritage, ranging from Romanesque architecture, Romanesque to Art Deco, Art-déco. Reims Cathedral, the ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Of Malmesbury
William of Malmesbury (; ) was the foremost English historian of the 12th century. He has been ranked among the most talented English historians since Bede. Modern historian C. Warren Hollister described him as "a gifted historical scholar and an omnivorous reader, impressively well versed in the literature of Classical antiquity, classical, patristic, and earlier medieval times as well as in the writings of his own contemporaries. Indeed William may well have been the most learned man in twelfth-century Western Europe." William was born about 1095 or 1096 in Wiltshire, England. His father was Normans, Norman and his mother English. He spent his whole life in England and his adult life as a monk at Malmesbury Abbey in Wiltshire. Biography Though the education William received at Malmesbury Abbey included a smattering of logic and physics, moral philosophy and history were the subjects to which he devoted the most attention. The earliest fact which he records of his career is tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Efficiency
In thermodynamics, the thermal efficiency (\eta_) is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc. For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal efficiency (known as the '' coefficient of performance'' or COP) is the ratio of net heat output (for heating), or the net heat removed (for cooling) to the energy input (external work). The efficiency of a heat engine is fractional as the output is always less than the input while the COP of a heat pump is more than 1. These values are further restricted by the Carnot theorem. Overview In general, energy conversion efficiency is the ratio between the useful output of a device and the input, in energy terms. For thermal efficiency, the input, Q_, to the device is heat, or the heat-content of a fuel that is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitruvius
Vitruvius ( ; ; –70 BC – after ) was a Roman architect and engineer during the 1st century BC, known for his multi-volume work titled . As the only treatise on architecture to survive from antiquity, it has been regarded since the Renaissance as the first book on architectural theory, as well as a major source on the canon of classical architecture. It is not clear to what extent his contemporaries regarded his book as original or important. He states that all buildings should have three attributes: , , and ("strength", "utility", and "beauty"), principles reflected in much Ancient Roman architecture. His discussion of perfect proportion in architecture and the human body led to the famous Renaissance drawing of the ''Vitruvian Man'' by Leonardo da Vinci. Little is known about Vitruvius' life, but by his own descriptionDe Arch. Book 1, preface. section 2. he served as an artilleryman, the third class of arms in the Roman military offices. He probably served as a senior of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Era
Common Era (CE) and Before the Common Era (BCE) are year notations for the Gregorian calendar (and its predecessor, the Julian calendar), the world's most widely used calendar era. Common Era and Before the Common Era are alternatives to the original Anno Domini (AD) and Before Christ (BC) notations used for the same calendar era. The two notation systems are numerically equivalent: " CE" and "AD " each describe the current year; "400 BCE" and "400 BC" are the same year. The expression can be traced back to 1615, when it first appears in a book by Johannes Kepler as the (), and to 1635 in English as " Vulgar Era". The term "Common Era" can be found in English as early as 1708, and became more widely used in the mid-19th century by Jewish religious scholars. Since the late 20th century, BCE and CE have become popular in academic and scientific publications on the grounds that BCE and CE are religiously neutral terms. They have been promoted as more sensitive to non-Christia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ægyptus
Roman Egypt was an imperial province of the Roman Empire from 30 BC to AD 642. The province encompassed most of modern-day Egypt except for the Sinai. It was bordered by the provinces of Crete and Cyrenaica to the west and Judaea, later Arabia Petraea, to the East. Egypt was conquered by Roman forces in 30 BC and became a province of the new Roman Empire upon its formation in 27 BC. Egypt came to serve as a major producer of grain for the empire and had a highly developed urban economy. It was by far the wealthiest Roman province outside of Italy. The population of Roman Egypt is unknown, although estimates vary from . Alexandria, its capital, was the largest port and second largest city of the Roman Empire. Three Roman legions garrisoned Egypt in the early Roman imperial period, with the garrison later reduced to two, alongside formations of the Roman army. The major town of each '' nome'' (administrative region) was known as a metropolis and granted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hero Of Alexandria
Hero of Alexandria (; , , also known as Heron of Alexandria ; probably 1st or 2nd century AD) was a Greek mathematician and engineer who was active in Alexandria in Egypt during the Roman era. He has been described as the greatest experimentalist of antiquity and a representative of the Hellenistic scientific tradition. Hero published a well-recognized description of a steam-powered device called an '' aeolipile'', also known as "Hero's engine". Among his most famous inventions was a windwheel, constituting the earliest instance of wind harnessing on land. In his work ''Mechanics'', he described pantographs. Some of his ideas were derived from the works of Ctesibius. In mathematics, he wrote a commentary on Euclid's ''Elements'' and a work on applied geometry known as the ''Metrica''. He is mostly remembered for Heron's formula; a way to calculate the area of a triangle using only the lengths of its sides. Much of Hero's original writings and designs have been lost, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
