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Tiberius Cavallo
Tiberius Cavallo (also Tiberio) (30 March 1749, Naples, Kingdom of Naples21 December 1809, London, England) was an Italian physicist and natural philosopher. His interests included electricity, the development of scientific instruments, the nature of " airs", and ballooning. He became both a Member of the Royal Academy of Sciences in Naples, and a Fellow of the Royal Society of London in 1779. Between 1780 and 1792, he presented the Royal Society's Bakerian Lecture thirteen times in succession. Life Tiberius Cavallo was born on 30 March 1749 at Naples, Italy where his father was a physician. In 1771 he moved to England. Cavallo made several ingenious improvements in scientific instruments. He is often cited as the inventor of Cavallo's multiplier. He also developed a "pocket electrometer" that he used to amplify small electric charges to make them observable and measurable with an electroscope. Parts of the instrument were protected from drafts by a glass enclosure. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naples
Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of Naples, province-level municipality is the third most populous Metropolitan cities of Italy, metropolitan city in Italy with a population of 2,958,410 residents, and the List of urban areas in the European Union, eighth most populous in the European Union. Naples metropolitan area, Its metropolitan area stretches beyond the boundaries of the city wall for approximately . Naples also plays a key role in international diplomacy, since it is home to NATO's Allied Joint Force Command Naples and the Parliamentary Assembly of the Mediterranean. Founded by Greeks in the 1st millennium BC, first millennium BC, Naples is one of the oldest continuously inhabited urban areas in the world. In the eighth century BC, a colony known as Parthenope () was e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Gas
Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter. Under standard conditions, hydrogen is a gas of diatomic molecules with the formula , called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen is colorless, odorless, non-toxic, and highly combustible. Stars, including the Sun, mainly consist of hydrogen in a plasma state, while on Earth, hydrogen is found as the gas (dihydrogen) and in molecular forms, such as in water and organic compounds. The most common isotope of hydrogen (H) consists of one proton, one electron, and no neutrons. Hydrogen gas was first produced artificially in the 17th century by the reaction of acids with metals. Henry Cavendish, in 1766–1781, identified hydrogen gas as a distinct substance and discovered its property of producing water when burned; hence its name means 'wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rees's Cyclopædia
Rees's ''Cyclopædia'', in full ''The Cyclopædia; or, Universal Dictionary of Arts, Sciences, and Literature'', was an important 19th-century British people, British encyclopaedia edited by Rev. Abraham Rees (1743–1825), a Presbyterian minister and scholar who had edited previous editions of ''Chambers's Cyclopaedia, Chambers's Cyclopædia''. Background When Rees was planning his ''Cyclopædia'', Europe was in the aftermath of the French Revolution, and during serialised publication (1802–1820) the Napoleonic Wars and War of 1812 occurred. Britain absorbed into its British Empire, empire a number of the former French and Dutch colonies around the world; Romanticism came to the fore; evangelical Christianity flourished with the efforts of William Wilberforce; and Industrial Revolution, factory manufacture burgeoned. With this background, philosophical radicalism was suspect in Britain, and aspects of the ''Cyclopædia'' were thought to be distinctly subversive and attract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." It is one of the most fundamental scientific disciplines. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burdett Coutts Memorial
The Burdett-Coutts Memorial Sundial is a structure built in the churchyard of Old St Pancras, London, in 1877–79, at the behest of Baroness Burdett-Coutts. The former churchyard included the burial ground for St Giles-in-the-Fields, where many Catholics and French émigrés were buried. The graveyard closed to burials in 1850, but some graves were disturbed by a cutting of the Midland Railway in 1865 as part of the works to construct its terminus at St Pancras railway station. The churchyard was acquired by the parish authorities in 1875 and reopened as a public park in June 1877. The high Victorian Gothic memorial was built from 1877 and unveiled in 1879. The obelisk acts as a memorial to people buried near the church whose graves were disturbed; the names of over 70 of them are listed on the memorial, including the Chevalier d'Éon, Sir John Soane, John Flaxman, Sir John Gurney, and James Leoni. The monument was designed by George Highton of Brixton. It was manufactured ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pasquale Paoli
Filippo Antonio Pasquale de' Paoli (; or ; ; 6 April 1725 – 5 February 1807) was a Corsican patriot, statesman, and military leader who was at the forefront of resistance movements against the Republic of Genoa, Genoese and later Kingdom of France, French rule over the island. He became the President of the Executive Council of the General diet (assembly), Diet of the People of Corsica and wrote the Corsican Constitution, Constitution of the state. The Corsican Republic (1755–1769) was a representative democracy asserting that the elected Diet of Corsican representatives had no master. Paoli held his office by election and not by appointment. It made him commander-in-chief of the armed forces as well as chief magistrate. Paoli's government claimed the same jurisdiction as the Republic of Genoa. In terms of ''de facto'' exercise of power, the Genoese held the coastal cities, which they could defend from their citadels, but the Corsican republic controlled the rest of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Pancras Old Church
St Pancras Old Church is a Church of England parish church on Pancras Road, Somers Town, London, Somers Town, in the London Borough of Camden. Somers Town is an area of the ancient parish and later Metropolitan Borough of St Pancras, London, St Pancras. Dedicated to the Roman martyr Pancras of Rome, Saint Pancras, the patron saint of children, it is reputed to be one of the History of Christianity in Britain#England, oldest sites of Christian worship in England, but this is not supported by strong evidence. St Pancras Old Church, which was largely rebuilt in the Victorian era, should not be confused with St Pancras New Church (1819–1822) about away on Euston Road. History The building served the large ancient parish of St Pancras, London, St Pancras, which stretched from a point a short distance north of Oxford Street, northward to Highgate. Origins By some traditions, the church has been a site of Christian worship since AD 314, but as with most parish churches, especia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Burdett Coutts Memorial, Old St Pancras
''The'' is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pronoun ''thee'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musical Temperament
In musical tuning, a temperament is a tuning system that slightly compromises the pure intervals of just intonation to meet other requirements. Most modern Western musical instruments are tuned in the equal temperament system. Tempering is the process of altering the size of an interval by making it narrower or wider than pure. "Any plan that describes the adjustments to the sizes of some or all of the twelve fifth intervals in the circle of fifths so that they accommodate pure octaves and produce certain sizes of major thirds is called a ''temperament''." Temperament is especially important for keyboard instruments, which typically allow a player to play only the pitches assigned to the various keys, and lack any way to alter pitch of a note in performance. Historically, the use of just intonation, Pythagorean tuning and meantone temperament meant that such instruments could sound "in tune" in one key, or some keys, but would then have more dissonance in other keys. In the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Pierre Blanchard
Jean-Pierre rançoisBlanchard (; 4 July 1753 – 7 March 1809) was a French inventor, best known as a pioneer of gas balloon flight, who distinguished himself in the conquest of the air in a balloon. Notable for his successful hydrogen balloon flight in Paris on 2 March 1784, Blanchard later moved to London and undertook flights with varying propulsion mechanisms. His historic achievement came on 7 January 1785, crossing the English Channel from Dover Castle to Guînes in about 2½ hours, receiving acclaim from Louis XVI and earning a substantial pension. Touring Europe, Blanchard demonstrated his balloons and showcased the modern parachute, which he later used for a successful escape in 1793 when his hydrogen balloon ruptured. Also in 1793, he conducted the first balloon flight in the Americas, witnessed by President George Washington. Married to Sophie Blanchard in 1804, Blanchard suffered a fatal heart attack in his balloon in 1808, with his widow continuing balloon demo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Brothers
Les Frères Robert were two French brothers. Anne-Jean Robert (1758–1820) and Nicolas-Louis Robert (1760–1828) were the engineers who built the world's first hydrogen balloon for professor Jacques Charles, which flew from central Paris on 27 August 1783. They went on to build the world's first manned hydrogen balloon, and on 1 December 1783 Nicolas-Louis accompanied Jacques Charles on a 2-hour, 5-minute flight. Their barometer and thermometer made it the first balloon flight to provide meteorological measurements of the atmosphere above the Earth's surface. The brothers subsequently experimented with an elongated elliptical shape for the hydrogen envelope in a balloon they attempted to power and steer by means of oars and umbrellas. In September 1784 the brothers flew 186 km from Paris to Beuvry, the world's first flight of more than 100 km. Career Background The Robert brothers were skilled engineers with a workshop at the ''Place des Victoires'' in Paris, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacques Charles
Jacques Alexandre César Charles (12 November 1746 – 7 April 1823) was a French people, French inventor, scientist, mathematician, and balloonist. Charles wrote almost nothing about mathematics, and most of what has been credited to him was due to mistaking him with another Jacques Charles (sometimes called Charles the Geometer), also a member of the Paris Academy of Sciences, entering on 12 May 1785. Charles and the Robert brothers launched the world's first hydrogen-filled gas balloon August 27, 1783; then December 1, 1783, Charles and his co-pilot Robert brothers, Nicolas-Louis Robert ascended to a height of about 1,800 feet (550 m) in a piloted gas balloon. Their pioneering use of hydrogen for lift led to this type of gas balloon being named a ''Charlière'' (as opposed to the hot air balloon, hot-air Montgolfière). Charles's law, describing how gases tend to expand when heated, was formulated by Joseph Louis Gay-Lussac in 1802, but he credited it to unpublished work by Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
