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Michael Faraday

 
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Michael Faraday, Chemist / Physicist

Michael Faraday
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  • Born: 22 September 1791
  • Birthplace: Newington, Surrey, England
  • Died: 25 August 1867
  • Best Known As: Inventor of the first dynamo

Although he had little formal education, Michael Faraday went on to become one of the most influential scientists in the field of electricity. He spent his professional career in the laboratory of the Royal Institution in London (1813-62), where he got his start as an assistant in 1813 to Sir Humphry Davy. By 1825 he had worked his way up to being laboratory director, and in 1833 he was made a professor of chemistry. In the lab he had great success with electrochemistry, and he even has an electrical unit named after him (a faraday is an amount of electricity measured during electrolysis). Faraday built the first dynamo, a copper disk that rotated between the poles of a permanent magnet and produced an electromotive force (something that moves electricity). His work in electromagnetic induction led to the development of modern dynamos and generators. Faraday also discovered the compound benzene.

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Britannica Concise Encyclopedia:

Michael Faraday

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(born Sept. 22, 1791, Newington, Surrey, Eng. — died Aug. 25, 1867, Hampton Court) English physicist and chemist. Son of a blacksmith, he received only a basic education in a church Sunday school, but he went to work as an assistant to Humphry Davy, from whom he learned chemistry. He discovered a number of new organic compounds, including benzene, and was the first to liquefy a "permanent" gas. His major contributions were in the fields of electricity and magnetism. He was the first to report induction of an electric current from a magnetic field. He invented the first electric motor and dynamo, demonstrated the relation between electricity and chemical bonding, discovered the effect of magnetism on light, and discovered and named diamagnetism. He also provided the experimental, and much of the theoretical, foundation on which James Clerk Maxwell built his electromagnetic field theory. In 1833 he was appointed professor at the Royal Institution. After 1855 he retired to a house provided by Queen Victoria, but he declined a knighthood.

For more information on Michael Faraday, visit Britannica.com.

Michael Faraday
Library of Congress

[b. Newington, England, September 22, 1791, d. Hampton Court, England, August 25, 1867]

Although Faraday's work with electricity is better known, he began his scientific career as a chemist, synthesizing chlorocarbons and, in 1825, discovering benzene, the chemical that led to understanding all the aromatics. His principal studies of electricity began in 1830. Faraday then developed electric motors and generators and found the basic laws of electrolysis and induction. Faraday is renowned as an experimentalist, but his concept of a field based on lines of force has become one of the main underpinnings of theoretical physics.


Gale Encyclopedia of Biography:

Michael Faraday

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The English physicist and chemist Michael Faraday (1791-1867) discovered benzene and the principles of current induction.

One of a blacksmith's 10 children, Michael Faraday was born on Sept. 22, 1791, in Newington, Surrey. The family soon moved to London, where young Michael picked up the rudiments of reading, writing, and arithmetic. At the age of 14 he was apprenticed to a bookbinder and bookseller. He read ravenously and attended public lectures, including some by Sir Humphry Davy.

Faraday's career began when Davy, temporarily blinded in a laboratory accident, appointed Faraday as his assistant at the Royal Institution. With Davy as a teacher in analytical chemistry, Faraday advanced in his scientific apprenticeship and began independent chemical studies. By 1825 he discovered benzene and had become the first to describe compounds of chlorine and carbon. He adopted the atomic theory to explain that chemical qualities were the result of attraction and repulsion between united atoms. This proved to be the theoretical foundation for much of his future work.

Faraday had already done some work in magnetism and electricity, and it was in this field that he made his most outstanding contributions. His first triumph came when he found a solution to the problem of producing continuous rotation by use of electric current, thus making electric motors possible. Hans Oersted had discovered the magnetic effect of a current, but Faraday grasped the fact that a conductor at rest and a steady magnetic field do not interact and that to get an induced current either the conductor or the field has to move. On Aug. 29, 1831, he discovered electromagnetic induction.

During the next 10 years Faraday explored and expanded the field of electricity. In 1834 he announced his famous two laws of electrolysis. Briefly, they state that for any given amount of electrical force in an electrochemical cell, chemical substances are released at the electrodes in the ratio of their chemical equivalents. He also invented the voltameter, a device for measuring electrical charges, which was the first step toward the later standardization of electrical quantities.

Faraday continued to work in his laboratory, but his health began to deteriorate and he had to stop work entirely in 1841. Almost miraculously, however, his health improved and he resumed work in 1844. He began a search for an interaction between magnetism and light and in 1845 turned his attention from electrostatics to electromagnetism. He discovered that an intense magnetic field can rotate the plane of polarized light, a phenomenon known today as the Faraday effect. In conjunction with these experiments he showed that the magnetic line of force is conducted by all matter. Those which were good conductors he called paramagnetics, while those which conducted the force poorly he named diamagnetics. Thus, the energy of a magnet is in the space around it, not in the magnet itself. This is the fundamental idea of the field theory.

Faraday was a brilliant lecturer, and through his public lectures he did a great deal to popularize science. Shortly after he became head of the Royal Institution in 1825, he inaugurated the custom of giving a series of lectures for young people during the Christmas season. This tradition has been maintained, and over the years the series have frequently been the basis for fascinating, simply written, and informative books.

On Aug. 25, 1867, Faraday died in London.

The admiration of physicists for Faraday has been demonstrated by naming the unit of capacitance the farad and a unit of charge, the faraday. No other man has been doubly honored in this way. His name also appears frequently in connection with effects, laws, and apparatus. These honors are proper tribute to the man who was possibly the greatest experimentalist who ever lived.

Further Reading

Much has been written about Faraday, but the student should first read the account by his successor at the Royal Institution, John Tyndall, Faraday as a Discoverer (1961). The sketch of Faraday in James Gerald Crowther, Men of Science (1936), is also recommended. Leslie Pearce Williams, Michael Faraday: A Biography (1965), appraises Faraday's work in relation to modern science and contains many previously unpublished manuscripts.

Faraday, Michael (1791-1867). Chemist and pioneer of electromagnetism. As a bookbinder's apprentice, he went to Humphry Davy's lectures at the Royal Institution and asked to be taken on as his assistant. By 1820 he was himself a prominent chemist, famous for his experimental skill. He isolated benzene in 1825, and when Davy died in 1829 he worked on the nature of electricity, magnetism, and light.

Oxford Dictionary of Philosophy:

Michael Faraday

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Faraday, Michael (1791-1867) English scientist. The son of a blacksmith, Faraday was apprenticed to a bookbinder when he attracted the attention of Sir Humphrey Davy in 1812. His discovery of electro-magnetic ‘lines of force’ and his view of the atom as merely a centre of force opened up field theory, and itself owed ancestry to the views of Kant, and especially Boscovich.

Answer of the Day:

Michael Faraday

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Michael Faraday  
Michael Faraday
On this date in 1831, English chemist Michael Faraday discovered electromagnetic induction, the production of an electric current by changing magnetic intensity. He used the same principle to build the electric dynamo, which eventually led to the construction of the electric generator. In 1845, Faraday discovered what is now known as the Faraday effect and the phenomenon that he named diamagnetism, an interaction between light and a magnetic field.

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From our Archives: Today's Highlights, August 29, 2005

Columbia Encyclopedia:

Michael Faraday

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Faraday, Michael (fâr'ədē, -dā'), 1791-1867, English scientist. The son of a blacksmith, he was apprenticed to a bookbinder at the age of 14. He had little formal education, but acquired a store of scientific knowledge through reading and by attending educational lectures including, in 1812, one by Sir Humphry Davy. The following year he became Davy's assistant at the Royal Institution in London. Faraday was made a member of the institution in 1823 and a fellow of the Royal Society in 1824. In 1825 he became director of the laboratory, and from 1833 he was Fullerian professor of chemistry at the Royal Institution. He subsequently declined knighthood and the presidency of the Royal Society.

Faraday's experiments yielded some of the most significant principles and inventions in scientific history. He developed the first dynamo (in the form of a copper disk rotated between the poles of a permanent magnet), the precursor of modern dynamos and generators. From his discovery of electromagnetic induction (1831; also independently discovered by the American Joseph Henry) stemmed a vast development of electrical machinery for industry. In 1825 he discovered the compound benzene. In addition to other contributions he did research on electrolysis, formulating Faraday's law. He also laid the foundations of the classical electromagnetic field theory, later fully developed by J. C. Maxwell. Some of his works were collected as Experimental Researches in Electricity (3 vol., 1839-55) and Experimental Researches in Chemistry and Physics (1859).

Bibliography

See his diary (ed. by T. Martin, 7 vol., 1932-36); his correspondence (ed. by L. P. Williams, 2 vol., 1971); biographies by T. Martin (1934), L. P. Williams (1965), G. Cantor (1991), and J. Hamilton (2005); study by D. Gooding and F. A. James, ed. (1986).

(1791-1867)

Famous British physicist, born in London on September 22, 1791. He became an assistant to Sir Humphry Davy and later became celebrated for his brilliant discoveries relating to electricity and chemistry. Faraday's well-known saying, "Nothing is too amazing to be true," apparently was not meant to cover table turning. It was, for him, too amazing to be true. His noted theory that table movements were caused by unconscious muscular pressure was first advanced in a letter to the Times of June 30, 1853. To prove it, he prepared two small flat boards a few inches square, placed several glass rollers between them and fastened the whole together with a couple of rubber bands so that the upper board would slide under lateral pressure to a limited extent over the lower one. A light index fastened to the upper board would betray the least amount of sliding.

During experiments this is just what happened. The upper board always moved first, which demonstrated that the fingers moved the table and not the table the fingers. Faraday also found that when the sitters learned the meaning of the index and kept their attention fixed on it, no movement took place. When it was hidden from their sight it kept on wavering, although the sitters believed that they always pressed directly downward. However, the pressure of the hands was trifling and was practically neutralized by the absence of unanimity in the direction. The sitters never made the same movement at the same moment.

For this reason, and for the weightier one that tables moved without contact as well, his theory was soon found inadequate. According to Charles Richet, it was Michel Chevreul, the famous French chemist, who originally evolved the theory of un-conscious muscular pressure. Chevreul's book, however, did not appear until 1854, a year after Faraday's explanation was published.

In later years many attempts were made to prove to Faraday the reality of psychic phenomena, but he was too obstinate. "They who say these things are not competent witnesses of facts," he wrote in 1865. To an invitation to attend the first séance of the Davenport brothers he returned the answer, "If spirit communications, not utterly worthless, should happen to start into activity, I will trust the spirits to find out for themselves how they can move my attention. I am tired of them."

Faraday was a member of the Sandemanians, an obscure religious sect holding rigid biblical views. When Sir William Crookes inquired of Faraday how he reconciled science with religion, he received the reply that he kept his science and religion strictly apart.

At the time of the Home-Lyon trial (see D. D. Home), a Professor Tyndall, in a letter in Pall Mall Gazette (May 5, 1868), wrote that, years before, Faraday had accepted an invitation to examine Home's phenomena, but his conditions were not met and the investigation fell through. When the original correspondence on the subject between Faraday and Sir Emerson Tennant was published, it appeared that one of Faraday's conditions was, "If the effects are miracles, or the work of spirits, does he (Home) admit the utterly contemptible character, both of them and their results, up to the present time, in respect either of yielding information or instruction or supplying any force or action of the least value to mankind?" Robert Bell, the intermediary for the proposed séance, found Faraday's letter so preposterous that, without consulting Home, he declined his intervention. Home, when he learned about it, was duly indignant.

Professor Tyndall—as an arch skeptic—commended Faraday's attitude, but those interested in psychical research assumed the contrary position. "The letter," writes Frank Pod-more in Modern Spiritualism (1902), "was, of course, altogether unworthy of Faraday's high character and scientific eminence, and was no doubt the outcome of a moment of transient irritation. The position taken was quite indefensible. To enter upon a judicial inquiry by treating the subject-matter as a chose jugée was surely a parody of scientific methods."

Faraday died August 25, 1867. In a series of séances between 1888 and 1910 in Spring Hall, Kansas, the presiding spirit claimed to be Faraday, and his communications were published in four books by A. Aber: Rending of the Veil, Beyond the Veil, The Guiding Star, and The Dawn of Another Life. A second set of communications reportedly from Faraday were received by an anonymous medium who called herself (or himself) the "Mystic Helper." The messages were received sporadically beginning in 1874 and were finally published in 1924.

Sources:

Berger, Arthur S., and Joyce Berger. The Encyclopedia of Parapsychology and Psychical Research. New York: Paragon House, 1991.

Mystic Helper, The. The Evolution of the Universe, or, Creation According to Science. Los Angeles: Cosmos Publishing, 1924.

Podmore, Frank. Modern Spiritualism. London: Methuen, 1902. Reprinted as Mediums of the Nineteenth Century. New Hyde Park, N.Y.: University Books, 1963.

Wikipedia on Answers.com:

Michael Faraday

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Michael Faraday

Michael Faraday
Born 22 September 1791(1791-09-22)
Newington Butts, England
Died 25 August 1867(1867-08-25) (aged 75)
Hampton Court, Middlesex, England
Residence England
Nationality British
Fields Physics and chemistry
Institutions Royal Institution
Known for Faraday's law of induction
Electrochemistry
Faraday effect
Faraday cage
Faraday constant
Faraday cup
Faraday's laws of electrolysis
Faraday paradox
Faraday rotator
Faraday-efficiency effect
Faraday wave
Faraday wheel
Lines of force
Influences Humphry Davy
William Thomas Brande
Notable awards Royal Medal (1835 & 1846)
Copley Medal (1832 & 1838)
Rumford Medal (1846)
Signature

Michael Faraday, FRS (22 September 1791 – 25 August 1867) was an English chemist and physicist (or natural philosopher, in the terminology of the time) who contributed to the fields of electromagnetism and electrochemistry.

Although Faraday received little formal education and knew little of higher mathematics such as calculus, he was one of the most influential scientists in history;[1] historians[2] of science refer to him as having been the best experimentalist in the history of science.[3] It was on account of his research regarding the magnetic field around a conductor carrying a DC electric current that Faraday established the basis for the concept of the electromagnetic field in physics, which was subsequently enlarged upon by James Clerk Maxwell. Faraday established that magnetism could affect rays of light and that there was an underlying relationship between the two phenomena.[4][5] He similarly discovered the principle of electromagnetic induction, diamagnetism, and the laws of electrolysis. His inventions of electromagnetic rotary devices formed the foundation of electric motor technology, and it was largely due to his efforts that electricity became viable for use in technology.

As a chemist, Faraday discovered benzene, investigated the clathrate hydrate of chlorine, invented an early form of the Bunsen burner and the system of oxidation numbers, and popularised terminology such as anode, cathode, electrode, and ion. Faraday ultimately became the first and foremost Fullerian Professor of Chemistry at the Royal Institution of Great Britain, a life-time position.

Faraday was an excellent experimentalist who conveyed his ideas in clear and simple language; his mathematical abilities, however, did not extend as far as trigonometry or any but the simplest algebra. It was James Clerk Maxwell who took the work of Faraday, and others, and consolidated them with a set of equations that lay at the base of all modern theories regarding electromagnetic phenomena. On Faraday's uses of the lines of force, Maxwell wrote that they show Faraday "to have been in reality a mathematician of a very high order – one from whom the mathematicians of the future may derive valuable and fertile methods."[6]

It is said that Albert Einstein kept a picture of Faraday on his study wall, alongside the picture of Isaac Newton and the photograph of James Clerk Maxwell.[7]

The SI unit of capacitance, the farad, is named in his honour.

Contents

Early years

Faraday was born in Newington Butts,[8] which is now part of the London Borough of Southwark, but which was then a suburban part of Surrey.[9] His family was not well off; his father, James, was a member of the Glassite sect of Christianity. James Faraday moved his wife and two children to London during the winter of 1790 from Outhgill in Westmorland, where he had been an apprentice to the village blacksmith.[10] Michael was born the autumn of that year. The young Michael Faraday, who was the third of four children, having only the most basic of school educations, had to mainly educate himself.[11] At fourteen he became the apprentice to George Riebau, a local bookbinder and bookseller in Blandford Street.[12] During his seven-year apprenticeship he read many books, including Isaac Watts' The Improvement of the Mind, and he enthusiastically implemented the principles and suggestions contained therein. At this time he also developed an interest in science, especially in electricity. Faraday was particularly inspired by the book Conversations on Chemistry by Jane Marcet.[13]

Portrait of Faraday in his late thirties

In 1812, at the age of twenty, and at the end of his apprenticeship, Faraday attended lectures by the eminent English chemist Humphry Davy of the Royal Institution and Royal Society, and John Tatum, founder of the City Philosophical Society. Many of the tickets for these lectures were given to Faraday by William Dance, who was one of the founders of the Royal Philharmonic Society. Faraday subsequently sent Davy a three hundred page book based on notes that he had taken during these lectures. Davy's reply was immediate, kind, and favourable. When Davy damaged his eyesight in an accident with nitrogen trichloride, he decided to employ Faraday as a secretary. When one of the Royal Institution's assistants, John Payne, was sacked, Sir Humphry Davy was asked to find a replacement, and appointed Faraday as Chemical Assistant at the Royal Institution on 1 March 1813.[4]

In the class-based English society of the time, Faraday was not considered a gentleman. When Davy set out on a long tour of the continent in 1813–15, his valet did not wish to go. Instead, Faraday went as Davy's scientific assistant, and was asked to act as Davy's valet until a replacement could be found in Paris. Faraday was forced to fill the role of valet as well as assistant throughout the trip. Davy's wife, Jane Apreece, refused to treat Faraday as an equal (making him travel outside the coach, eat with the servants, etc.), and made Faraday so miserable that he contemplated returning to England alone and giving up science altogether. The trip did, however, give him access to the scientific elite of Europe and exposed him to a host of stimulating ideas.[4]

Faraday was a devout Christian; his Sandemanian denomination was an offshoot of the Church of Scotland. Well after his marriage, he served as Deacon and for two terms as an Elder in the meeting house of his youth. His church was located at Paul's Alley in the Barbican. This meeting house was relocated in 1862 to Barnsbury Grove, Islington; this North London location was where Faraday served the final two years of his second term as Elder prior to his resignation from that post.[14][15] Biographers have noted that "a strong sense of the unity of God and nature pervaded Faraday's life and work."[16]

Faraday married Sarah Barnard (1800–1879) on 12 June 1821.[17] They met through their families at the Sandemanian church, and he confessed his faith to the Sandemanian congregation the month after they were married. They had no children.[8]

Scientific achievements

Chemistry

Michael Faraday in his laboratory, ca. 1850s by artist Harriet Jane Moore who documented Faraday's life in watercolours.

Faraday's earliest chemical work was as an assistant to Humphry Davy. Faraday was specifically involved in the study of chlorine; he discovered two new compounds of chlorine and carbon. He also conducted the first rough experiments on the diffusion of gases, a phenomenon that was first pointed out by John Dalton, and the physical importance of which was more fully brought to light by Thomas Graham and Joseph Loschmidt. Faraday succeeded in liquefying several gases, investigated the alloys of steel, and produced several new kinds of glass intended for optical purposes. A specimen of one of these heavy glasses subsequently became historically important; when the glass was placed in a magnetic field Faraday determined the rotation of the plane of polarisation of light. This specimen was also the first substance found to be repelled by the poles of a magnet.

Faraday invented an early form of what was to become the Bunsen burner, which is in practical use in science laboratories around the world as a convenient source of heat.[18][19] Faraday worked extensively in the field of chemistry, discovering chemical substances such as benzene (which he called bicarburet of hydrogen), and liquefying gases such as chlorine. The liquifying of gases helped to establish that gases are the vapours of liquids possessing a very low boiling-point, and gave a more solid basis to the concept of molecular aggregation. In 1820 Faraday reported the first synthesis of compounds made from carbon and chlorine, C2Cl6 and C2Cl4, and published his results the following year.[20][21][22] Faraday also determined the composition of the chlorine clathrate hydrate, which had been discovered by Humphry Davy in 1810.[23][24] Faraday is also responsible for discovering the laws of electrolysis, and for popularizing terminology such as anode, cathode, electrode, and ion, terms proposed in large part by William Whewell.

Faraday was the first to report what later came to be called metallic nanoparticles. In 1847 he discovered that the optical properties of gold colloids differed from those of the corresponding bulk metal. This was probably the first reported observation of the effects of quantum size, and might be considered to be the birth of nanoscience.[25]

Electricity and magnetism

Faraday is best known for his work regarding electricity and magnetism. His first recorded experiment was the construction of a voltaic pile with seven halfpence pieces, stacked together with seven disks of sheet zinc, and six pieces of paper moistened with salt water. With this pile he decomposed sulphate of magnesia (first letter to Abbott, 12 July 1812).

One of Faraday's 1831 experiments demonstrating induction. The liquid battery (right) sends an electric current through the small coil (A). When it is moved in or out of the large coil (B), its magnetic field induces a momentary voltage in the coil, which is detected by the galvanometer (G).
Electromagnetic rotation experiment of Faraday, ca. 1821[26]

In 1821, soon after the Danish physicist and chemist Hans Christian Ørsted discovered the phenomenon of electromagnetism, Davy and British scientist William Hyde Wollaston tried, but failed, to design an electric motor.[5] Faraday, having discussed the problem with the two men, went on to build two devices to produce what he called "electromagnetic rotation". One of these, now known as the homopolar motor, caused a continuous circular motion that was engendered by the circular magnetic force around a wire that extended into a pool of mercury wherein was placed a magnet; the wire would then rotate around the magnet if supplied with current from a chemical battery. These experiments and inventions formed the foundation of modern electromagnetic technology. In his excitement, Faraday published results without acknowledging his work with either Wollaston or Davy. The resulting controversy within the Royal Society strained his mentor relationship with Davy and may well have contributed to Faraday’s assignment to other activities, which consequently prevented his involvement in electromagnetic research for several years.[27][28]

From his initial discovery in 1821, Faraday continued his laboratory work, exploring electromagnetic properties of materials and developing requisite experience. In 1824, Faraday briefly set up a circuit to study whether a magnetic field could regulate the flow of a current in an adjacent wire, but he found no such relationship.[29] This experiment followed similar work conducted with light and magnets three years earlier that yielded identical results.[30][31] During the next seven years, Faraday spent much of his time perfecting his recipe for optical quality (heavy) glass, boro-silicate of lead,[32] which he used in his future studies connecting light with magnetism.[33] In his spare time, Faraday continued publishing his experimental work on optics and electromagnetism; he conducted correspondence with scientists, who he had met on his journeys across Europe with Davy, and who were also working on electromagnetism.[34] Two years after the death of Davy, in 1831, he began his great series of experiments in which he discovered electromagnetic induction. Joseph Henry likely discovered self-induction a few months earlier and both may have been anticipated by the work of Francesco Zantedeschi in Italy in 1829 and 1830.[35]

English chemists John Daniell (left) and Michael Faraday (right), credited as founders of electrochemistry today.
A diagram of Faraday's iron ring-coil apparatus

Faraday's breakthrough came when he wrapped two insulated coils of wire around an iron[verification needed] ring, and found that, upon passing a current through one coil, a momentary current was induced in the other coil.[5] This phenomenon is now known as mutual induction. The iron ring-coil apparatus is still on display at the Royal Institution. In subsequent experiments, he found that, if he moved a magnet through a loop of wire, an electric current flowed in that wire. The current also flowed if the loop was moved over a stationary magnet. His demonstrations established that a changing magnetic field produces an electric field; this relation was modelled mathematically by James Clerk Maxwell as Faraday's law, which subsequently became one of the four Maxwell equations, and which have in turn evolved into the generalization known today as field theory. Faraday would later use the principles he had discovered to construct the electric dynamo, the ancestor of modern power generators.

In 1839, he completed a series of experiments aimed at investigating the fundamental nature of electricity; Faraday used "static", batteries, and "animal electricity" to produce the phenomena of electrostatic attraction, electrolysis, magnetism, etc. He concluded that, contrary to the scientific opinion of the time, the divisions between the various "kinds" of electricity were illusory. Faraday instead proposed that only a single "electricity" exists, and the changing values of quantity and intensity (current and voltage) would produce different groups of phenomena.[5]

Near the end of his career, Faraday proposed that electromagnetic forces extended into the empty space around the conductor. This idea was rejected by his fellow scientists, and Faraday did not live to see the eventual acceptance of his proposition by the scientific community. Faraday's concept of lines of flux emanating from charged bodies and magnets provided a way to visualize electric and magnetic fields; that conceptual model was crucial for the successful development of the electromechanical devices that dominated engineering and industry for the remainder of the 19th century.

Diamagnetism

Michael Faraday holding a glass bar of the type he used in 1845 to show that magnetism can affect light in a dielectric material.[36]

In 1845, Faraday discovered that many materials exhibit a weak repulsion from a magnetic field: a phenomenon he termed diamagnetism.

Faraday also discovered that the plane of polarization of linearly polarized light can be rotated by the application of an external magnetic field aligned in the direction which the light is moving. This is now termed the Faraday effect. He wrote in his notebook, "I have at last succeeded in illuminating a magnetic curve or line of force and in magnetising a ray of light".

Later on in his life, in 1862, Faraday used a spectroscope to search for a different alteration of light, the change of spectral lines by an applied magnetic field. The equipment available to him was, however, insufficient for a definite determination of spectral change. Pieter Zeeman later used an improved apparatus to study the same phenomenon, publishing his results in 1897 and receiving the 1902 Nobel Prize in Physics for his success. In both his 1897 paper[37] and his Nobel acceptance speech,[38] Zeeman made reference to Faraday's work.

Faraday cage

In his work on static electricity, Faraday's ice pail experiment demonstrated that the charge resided only on the exterior of a charged conductor, and exterior charge had no influence on anything enclosed within a conductor. This is because the exterior charges redistribute such that the interior fields due to them cancel. This shielding effect is used in what is now known as a Faraday cage.


Royal Institution and public service

Michael Faraday meets Father Thames, from Punch (21 July 1855)
Lighthouse lantern room from mid 1800s

Faraday was the first Fullerian Professor of Chemistry at the Royal Institution of Great Britain, a position to which he was appointed for life. His sponsor and mentor was John 'Mad Jack' Fuller, who created the position at the Royal Institution. Faraday was elected a member of the Royal Society in 1824,[8] appointed director of the laboratory in 1825; and in 1833 he was appointed Fullerian Professor of Chemistry in the institution for life, without the obligation to deliver lectures.

Beyond his scientific research into areas such as chemistry, electricity, and magnetism at the Royal Institution, Faraday undertook numerous, and often time-consuming, service projects for private enterprise and the British government. This work included investigations of explosions in coal mines, being an expert witness in court, and the preparation of high-quality optical glass. In 1846, together with Charles Lyell, he produced a lengthy and detailed report on a serious explosion in the colliery at Haswell County Durham, which killed 95 miners. Their report was a meticulous forensic investigation and indicated that coal dust contributed to the severity of the explosion. The report should have warned coal owners of the hazard of coal dust explosions, but the risk was ignored for over 60 years until the Senghenydd Colliery Disaster of 1913.

As a respected scientist in a nation with strong maritime interests, Faraday spent extensive amounts of time on projects such as the construction and operation of light houses and protecting the bottoms of ships from corrosion. His workshop still stands at Trinity Buoy Wharf above the Chain and Buoy Store, next to London's only lighthouse and a school that is named after him.

Faraday was also active in what would now be called environmental science, or engineering. He investigated industrial pollution at Swansea and was consulted on air pollution at the Royal Mint. In July 1855, Faraday wrote a letter to The Times on the subject of the foul condition of the River Thames, which resulted in an oft-reprinted cartoon in Punch. (See also The Great Stink.)

Faraday assisted with the planning and judging of exhibits for the Great Exhibition of 1851 in London. He also advised the National Gallery on the cleaning and protection of its art collection, and served on the National Gallery Site Commission in 1857.

Education was another of Faraday's areas of service; he lectured on the topic in 1854 at the Royal Institution, and in 1862 he appeared before a Public Schools Commission to give his views on education in Great Britain. Faraday also weighed in negatively on the public's fascination with table-turning, mesmerism, and seances, and in so doing chastised both the public and the nation's educational system.[39]

Faraday gave a successful series of lectures on the chemistry and physics of flames at the Royal Institution, entitled The Chemical History of a Candle. This was one of the earliest Christmas lectures for young people, which are still given each year. Between 1827 and 1860, Faraday gave the Christmas lectures a record nineteen times.

Later life

Faraday in old age.
Michael Faraday delivering a Christmas Lecture in 1856.

In June 1832, the University of Oxford granted Faraday a Doctor of Civil Law degree (honorary). During his lifetime, Faraday rejected a knighthood and twice refused to become President of the Royal Society. Faraday was elected a foreign member of the Royal Swedish Academy of Sciences in 1838, and was one of eight foreign members elected to the French Academy of Sciences in 1844.[40]

In 1848, as a result of representations by the Prince Consort, Michael Faraday was awarded a grace and favour house in Hampton Court in Middlesex, free of all expenses or upkeep. This was the Master Mason's House, later called Faraday House, and now No.37 Hampton Court Road. In 1858 Faraday retired to live there.[41]

When asked by the British government to advise on the production of chemical weapons for use in the Crimean War (1853–1856), Faraday refused to participate citing ethical reasons.[42]

Faraday died at his house at Hampton Court on 25 August 1867 aged 75 years and 11 months.[43] He had previously turned down burial in Westminster Abbey, but he has a memorial plaque there, near Isaac Newton's tomb. Faraday was interred in the dissenters' (non-Anglican) section of Highgate Cemetery. Hirshfeld maintains in his biography that Faraday suffered from mental breakdown due to his intellectual exertions so that he became debilitated by the end of his life and unable to conduct any meaningful research.

Commemorations

Michael Faraday, statue in Savoy Place, London.
Sculptor John Henry Foley RA

Faraday School is located on Trinity Buoy Wharf where his workshop still stands above the Chain and Buoy Store, next to London's only lighthouse.

A statue of Faraday stands in Savoy Place, London, outside the Institution of Engineering and Technology. Also in London, the Michael Faraday Memorial, designed by brutalist architect Rodney Gordon and completed in 1961, is at the Elephant & Castle gyratory system, near Faraday's birthplace at Newington Butts.

Faraday Gardens is a small park in Walworth, London, not far from his birthplace at Newington Butts. This park lies within the local council ward of Faraday in the London Borough of Southwark.

A building at London South Bank University, which houses the institute's electrical engineering departments is named the Faraday Wing, due to its proximity to Faraday's birthplace in Newington Butts. A hall at Loughborough University was named after Faraday in 1960. Near the entrance to its dining hall is a bronze casting, which depicts the symbol of an electrical transformer, and inside there hangs a portrait, both in Faraday's honour. An eight-story building at the University of Edinburgh's science & engineering campus is named for Faraday, as is a recently built hall of accommodation at Brunel University, the main engineering building at Swansea University, and the instructional and experimental physics building at Northern Illinois University. The former UK Faraday Station in Antarctica was named after him.

Streets named for Faraday can be found in many British cities (e.g., London, Fife, Swindon, Basingstoke, Nottingham, Whitby, Kirkby, Crawley, Newbury, Swansea, Aylesbury and Stevenage) as well as in France (Paris), Germany (Hermsdorf), Canada (Quebec; Deep River, Ontario; Ottawa, Ontario), and the United States (Reston, VA).

From 1991 until 2001, Faraday's picture featured on the reverse of Series E £20 banknotes issued by the Bank of England. He was shown conducting a lecture at the Royal Institution with the magneto-electric spark apparatus.[44]

Bibliography

Faraday's books, with the exception of Chemical Manipulation, were collections of scientific papers or transcriptions of lectures.[45] Since his death, Faraday's diary has been published, as have several large volumes of his letters and Faraday's journal from his travels with Davy in 1813–1815.

See also

Michael Faraday's grave at Highgate Cemetery

References

  1. ^ Hart, Michael H. (2000). The 100: A Ranking of the Most Influential Persons in History. New York: Citadel. ISBN 0-89104-175-3. 
  2. ^ Russell, Colin (2000). Michael Faraday: Physics and Faith. New York: Oxford University Press. ISBN 0195117638. 
  3. ^ "best experimentalist in the history of science." Quoting Dr Peter Ford, from the University of Bath’s Department of Physics. Accessed January 2007.
  4. ^ a b c Michael Faraday entry at the 1911 Encyclopaedia Britannica hosted by LovetoKnow Retrieved January 2007.
  5. ^ a b c d "Archives Biographies: Michael Faraday", The Institution of Engineering and Technology.
  6. ^ The Scientific Papers of James Clerk Maxwell Volume 1 page 360; Courier Dover 2003, ISBN 0486495604
  7. ^ "Einstein's Heroes: Imagining the World through the Language of Mathematics", by Robyn Arianrhod UQP, reviewed by Jane Gleeson-White, 10 November 2003, The Sydney Morning Herald.
  8. ^ a b c Frank A. J. L. James, ‘Faraday, Michael (1791–1867)’, Oxford Dictionary of National Biography, Oxford University Press, Sept 2004; online edn, Jan 2008 accessed 3 March 2009
  9. ^ For a concise account of Faraday’s life including his childhood, see pages 175–83 of EVERY SATURDAY: A JOURNAL OF CHOICE READING, Vol III published at Cambridge in 1873 by Osgood & Co.
  10. ^ The implication was that James discovered job opportunities elsewhere through membership of this sect. James joined the London meeting house on 20 February 1791, and moved his family shortly thereafter. See pages 57–8 of Cantor's (1991) Michael Faraday, Sandemanian and Scientist.
  11. ^ "Michael Faraday." History of Science and Technology. Houghton Mifflin Company, 2004. Answers.com 4 June 2007
  12. ^ Plaque #19 on Open Plaques.
  13. ^ "Jane Marcet's Books". John H. Lienhard. The Engines of Our Ingenuity. NPR. KUHF-FM Houston. 1992. No. 744. Transcript. Retrieved on 2 October 2007.
  14. ^ See pages 41–43, 60–4, and 277-80 of Geoffrey Cantor's (1991) Michael Faraday, Sandemanian and Scientist.
  15. ^ Paul's Alley was located 10 houses south of the Barbican. See page 330 Elmes's (1831) Topographical Dictionary of the British Metropolis.
  16. ^ Baggott, Jim (2 September 1991). "The myth of Michael Faraday: Michael Faraday was not just one of Britain's greatest experimenters. A closer look at the man and his work reveals that he was also a clever theoretician". New Scientist. http://www.newscientist.com/article/mg13117874.600-the-myth-of-michael-faraday-michael-faraday-was-not-justone-of-britains-greatest-experimenters-a-closer-look-at-the-man-and-hiswork-reveals-that-he-was-also-a-clever-theoretician-.html. Retrieved 6 September 2008. 
  17. ^ The register at St. Faith-in-the-Virgin near St. Paul's Cathedral, records 12 June as the date their licence was issued. The witness was Sarah's father, Edward. Their marriage was 16 years prior to the Marriage and Registration Act of 1837. See page 59 of Cantor's (1991) Michael Faraday, Sandemanian and Scientist.
  18. ^ Jensen, William B. (2005). "The Origin of the Bunsen Burner" (PDF). Journal of Chemical Education 82 (4). http://jchemed.chem.wisc.edu/HS/Journal/Issues/2005/Apr/clicSubscriber/V82N04/p518.pdf. 
  19. ^ See page 127 of Faraday's Chemical Manipulation, Being Instructions to Students in Chemistry (1827)
  20. ^ Faraday, Michael (1821). "On two new Compounds of Chlorine and Carbon, and on a new Compound of Iodine, Carbon, and Hydrogen". Philosophical Transactions 111: 47. doi:10.1098/rstl.1821.0007. 
  21. ^ Faraday, Michael (1859). Experimental Researches in Chemistry and Physics. London: Richard Taylor and William Francis. pp. 33–53. ISBN 0850668417. 
  22. ^ Williams, L. Pearce (1965). Michael Faraday: A Biography. New York: Basic Books. pp. 122–123. ISBN 0306802996. 
  23. ^ Faraday, Michael (1823). "On Hydrate of Chlorine". Quartly Journal of Science 15: 71. 
  24. ^ Faraday, Michael (1859). Experimental Researches in Chemistry and Physics. London: Richard Taylor and William Francis. pp. 81–84. ISBN 0850668417. 
  25. ^ "The Birth of Nanotechnology". Nanogallery.info. 2006. http://www.nanogallery.info/nanogallery/?ipg=126. Retrieved 25 July 2007. ""Faraday made some attempt to explain what was causing the vivid coloration in his gold mixtures, saying that known phenomena seemed to indicate that a mere variation in the size of gold particles gave rise to a variety of resultant colors."" 
  26. ^ Faraday, Michael (1844). Experimental Researches in Electricity. 2. ISBN 0486435059.  See plate 4.
  27. ^ Hamilton's A Life of Discovery: Michael Faraday, Giant of the Scientific Revolution (2004) pp. 165–71, 183, 187–90.
  28. ^ Cantor's Michael Faraday, Sandemanian and Scientist (1991) pp. 231–3.
  29. ^ Thompson’s Michael Faraday, his life and work (1901) p.95.
  30. ^ Thompson (1901) p. 91. This lab entry illustrates Faraday’s quest for the connection between light and electromagnetic phenomenon 10 September 1821.
  31. ^ Cantor's Michael Faraday, Sandemanian and Scientist (1991) p. 233.
  32. ^ pp. 95–98 of Thompson (1901).
  33. ^ Thompson (1901) p 100.
  34. ^ Faraday's initial induction lab work occurred in late November 1825. His work was heavily influenced by the ongoing research of fellow European scientists Ampere, Arago, and Oersted as indicated by his diary entries. Cantor’s Michael Faraday: Sandemanian and Scientist (1991) pp. 235–44.
  35. ^ Brother Potamian (1913). "Francesco Zantedeschi article at the Catholic Encyclopedia". Wikisource. http://en.wikisource.org/wiki/Catholic_Encyclopedia_%281913%29/Francesco_Zantedeschi. Retrieved 16 June 2007. 
  36. ^ Detail of an engraving by Henry Adlard, based on an earlier photograph by Maull & Polyblank ca. 1857. See National Portrait Gallery, UK
  37. ^ Zeeman, Pieter (1897). "The Effect of Magnetisation on the Nature of Light Emitted by a Substance". Nature 55 (1424): 347. Bibcode 1897Natur..55..347Z. doi:10.1038/055347a0. 
  38. ^ "Pieter Zeeman, Nobel Lecture". http://nobelprize.org/nobel_prizes/physics/laureates/1902/zeeman-lecture.html. Retrieved 29 May 2008. 
  39. ^ See The Illustrated London News, July 1853, for Faraday's comments.
  40. ^ Gladstone, John Hall (1872). Michael Faraday. London: Macmillan and Company. p. 53. http://books.google.com/?id=pbs4AAAAMAAJ&pg=PA53&lpg=PA53&dq=Faraday+French+Academy. 
  41. ^ Twickenham Museum on Faraday and Faraday House, Accessed June 2006
  42. ^ Croddy, Eric; Wirtz, James J. (2005). Weapons of Mass Destruction: An Encyclopedia of Worldwide Policy, Technology, and History. ABC-CLIO. pp. Page 86. ISBN 1851094903. http://books.google.com/?id=ZzlNgS70OHAC&pg=PA86&lpg=PA86&dq=Faraday++chemical+weapons+Crimean+War. 
  43. ^ Plaque #2429 on Open Plaques.
  44. ^ "Withdrawn banknotes reference guide". Bank of England. http://www.bankofengland.co.uk/banknotes/denom_guide/index.htm. Retrieved 17 October 2008. 
  45. ^ See page 220 of Hamilton's A Life of Discovery: Michael Faraday, Giant of the Scientific Revolution (2002)

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