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Triboelectric Effect
The triboelectric effect (also known as triboelectricity, triboelectric charging, triboelectrification, or tribocharging) describes electric charge transfer between two objects when they contact or slide against each other. It can occur with different materials, such as the sole of a shoe on a carpet, or between two pieces of the same material. It is ubiquitous, and occurs with differing amounts of charge transfer (tribocharge) for all solid materials. There is evidence that tribocharging can occur between combinations of solids, liquids and gases, for instance liquid flowing in a solid tube or an aircraft flying through air. Often static electricity is a consequence of the triboelectric effect when the charge stays on one or both of the objects and is not conducted away. The term triboelectricity has been used to refer to the field of study or the general phenomenon of the triboelectric effect, or to the static electricity that results from it. When there is no sliding, triboc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cat Demonstrating Static Cling With Styrofoam Peanuts
The cat (''Felis catus''), also referred to as the domestic cat or house cat, is a small Domestication, domesticated carnivorous mammal. It is the only domesticated species of the family Felidae. Advances in archaeology and genetics have shown that the domestication of the cat occurred in the Near East around 7500 BC. It is commonly kept as a pet and working cat, but also ranges freely as a feral cat avoiding human contact. It is valued by humans for companionship and its ability to kill vermin. Its retractable claws are adapted to killing small prey species such as mice and rats. It has a strong, flexible body, quick reflexes, and sharp teeth, and its night vision and sense of smell are well developed. It is a social species, but a solitary hunter and a crepuscular predator. Cat intelligence is evident in their ability to adapt, learn through observation, and solve problems. Research has shown they possess strong memories, exhibit neuroplasticity, and display cognitive skil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hauksbee Generator
{{Disambiguation ...
Hauksbee may refer to: * Francis Hauksbee (scientist), 1666–1713. * Mrs. Hauksbee, a fictional character in many stories by Rudyard Kipling Joseph Rudyard Kipling ( ; 30 December 1865 – 18 January 1936)''The Times'', (London) 18 January 1936, p. 12. was an English journalist, novelist, poet, and short-story writer. He was born in British Raj, British India, which inspired much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Band-bending Diagram
In solid-state physics of semiconductors, a band diagram is a diagram plotting various key electron energy levels (Fermi level and nearby energy band edges) as a function of some spatial dimension, which is often denoted ''x''. These diagrams help to explain the operation of many kinds of semiconductor devices and to visualize how bands change with position (band bending). The bands may be coloured to distinguish level filling. A band diagram should not be confused with a band structure plot. In both a band diagram and a band structure plot, the vertical axis corresponds to the energy of an electron. The difference is that in a band structure plot the horizontal axis represents the wave vector of an electron in an infinitely large, homogeneous material (usually a crystal), whereas in a band diagram the horizontal axis represents position in space, usually passing through multiple materials. Because a band diagram shows the ''changes'' in the band structure from place to pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annales De Chimie Et De Physique
__NOTOC__ ''Annales de chimie et de physique'' (, ) is a scientific journal founded in Paris, France, in 1789 under the title ''Annales de chimie''. One of the early editors was the French chemist Antoine Lavoisier. Lavoisier, an aristocrat, was guillotined in May 1794, ostensibly for tax fraud: and the journal was not published from 1794 to 1796 while the Reign of Terror was at its height under the French Directory. In 1815, it became the ''Annales de chimie et de physique'', and was published under that name for the next 100 years. In 1914, it split into two successor journals. The first one, '' Annales de physique'', was latterly published by EDP Sciences under the same name up to 2009, when it became integrated in the '' European Physical Journal'' series as the '' European Physical Journal H – Historical Perspectives on Contemporary Physics''. The second successor, ''Annales de chimie'', later became '' Annales de chimie: Science des matériaux'' in 1978; from 1998 to 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Claude Eugène Péclet
Jean Claude Eugène Péclet (10 February 1793 – 6 December 1857) was a French physicist. He was born in Besançon, France. Péclet became, in 1812, one of the first students of the École Normale in Paris with Gay-Lussac and Dulong being his professors. In 1816, he was elected professor at the Collège de Marseille and taught physical sciences there until 1827. Being nominated ''maître de conférences'' (tenured position) at the École Normale Supérieure, he returned to Paris. In 1829, he became a professor of physics at the École Centrale des Arts et Manufactures that was being founded by the businessman Alphonse Lavallée, by Péclet, and by two other scientists, Jean-Baptiste Dumas and Théodore Olivier. His salary was then 3000 Francs per year, plus a share of the profits of this private engineering school. In 1840, Péclet became inspecteur général de l'instruction publique. The Péclet number is named after him. He was Coriolis's brother-in-law. He died in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johan Carl Wilcke
Johan Carl Wilcke (6 September 1732 – 18 April 1796) was a Swedish physicist. Biography Wilcke was born in Wismar, son of a clergyman who in 1739 was appointed second pastor of the German Church in Stockholm. He went to the German school in Stockholm and enrolled at the University of Uppsala in 1749. He spent the years from 1751 travelling abroad and received the '' magister'' degree from the University of Rostock in 1757, after having published the dissertation ''De electricitatibus contrariis''. In 1759 he became the first "Thamian lecturer" of experimental physics at the Royal Swedish Academy of Sciences, a position created through a donation from the wealthy merchant Sebastian Tham, and a member of the academy. He became a titular professor in 1770, and permanent secretary of the Academy of Sciences in 1784. He died in Stockholm in 1796. His two areas of significant research were electricity and caloric theory. In 1762 he invented an electrostatic generator that was a firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benjamin Franklin
Benjamin Franklin (April 17, 1790) was an American polymath: a writer, scientist, inventor, statesman, diplomat, printer, publisher and Political philosophy, political philosopher.#britannica, Encyclopædia Britannica, Wood, 2021 Among the most influential intellectuals of his time, Franklin was one of the Founding Fathers of the United States; a Committee of Five, drafter and signer of the United States Declaration of Independence, Declaration of Independence; and the first United States Postmaster General, postmaster general. Born in the Province of Massachusetts Bay, Franklin became a successful Early American publishers and printers, newspaper editor and printer in Philadelphia, the leading city in the colonies, publishing ''The Pennsylvania Gazette'' at age 23. He became wealthy publishing this and ''Poor Richard's Almanack'', which he wrote under the pseudonym "Richard Saunders". After 1767, he was associated with the ''Pennsylvania Chronicle'', a newspaper known for it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Hauksbee The Younger
Francis Hauksbee the Younger (1687 – 11 January 1763) was an English instrument maker and experimentalist. Life He was son of John Hauksbee, who belonged to the Drapers' Company, and his wife Mary; and a nephew of Francis Hauksbee the elder. He was elected clerk and housekeeper to the Royal Society on 9 May 1723. Augustus De Morgan believed that Hauksbee was the first to give lectures with experiments in London, and began them about 1714. He collaborated with William Whiston on lecture series. Hauksbee died on 11 January 1763, aged 75. Instrument maker According to an advertisement, Hauksbee made and sold air-pumps, hydrostatic balances, and reflecting telescopes in Crane Court, Fleet Street, London. His ''Proposals for making a large Reflecting Telescope'' evidences skill as an instrument-maker, and also an acquaintance with John Hadley. Works In 1731 was published ''Essay for introducing a Portable Laboratory by means whereof all the Chemical operations are commodiously p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrostatic Generator
An electrostatic generator, or electrostatic machine, is an electric generator, electrical generator that produces ''static electricity'', or electricity at high voltage and low continuous current. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon, without a theory to explain its behavior and often confused with magnetism. By the end of the 17th century, researchers had developed practical means of generating electricity by friction, but the development of electrostatic machines did not begin in earnest until the 18th century, when they became fundamental instruments in the studies about the new science of electricity. Electrostatic generators operate by using manual (or other) power to transform mechanical work into electric energy, or using electric currents. Manual electrostatic generators develop electrostatic electrical charge, charges of opposite signs rendered to two co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Von Guericke
Otto von Guericke ( , , ; spelled Gericke until 1666; – ) was a German scientist, inventor, mathematician and physicist. His pioneering scientific work, the development of experimental methods and repeatable demonstrations on the physics of the vacuum, atmospheric pressure, Electrostatics, electrostatic repulsion, his advocacy for the reality of "action at a distance" and of "absolute Outer space, space" were noteworthy contributions for the advancement of the Scientific Revolution. Von Guericke was a very pious man in the Apollonian and Dionysian, Dionysian tradition and attributed the Vacuum#Outer space, vacuum of space to the creations and designs of an God, infinite divinity. Von Guericke described this duality "as something that 'contains all things' and is 'more precious than gold, without beginning and end, more joyous than the perception of bountiful light' and 'comparable to the heavens'." Biography Early life and education Otto von Guericke was born to a landed g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudodoxia Epidemica
''Pseudodoxia Epidemica: or, Enquiries into very many received tenents and commonly presumed truths'', also known simply as ''Pseudodoxia Epidemica'' or ''Vulgar Errors'', is a work by the English polymath Thomas Browne, challenging and refuting the "vulgar" or common errors and superstitions of his own historical era. It first appeared in 1646 and went through five subsequent editions, the last revision occurring in 1672. The work includes evidence of Browne's adherence to the Baconian method of empirical observation of nature, and was in the vanguard of work-in-progress scientific journalism during the 17th-century Scientific Revolution. Throughout its pages, frequent examples of Browne's subtle humour can also be found. Browne's three determinants for obtaining truth were the authority of past scholarly works, the act of reason, and empirical experience. Each of these determinants is employed upon subjects ranging from common folklore to cosmology. Subjects covered in ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the Work (physics), work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
