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Electric charge

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1909:
analysis, which was probably significant for Franklin's own theorizing. One physicist suggests that Watson first proposed a one-fluid theory, which Franklin then elaborated further and more influentially. A historian of science argues that Watson missed a subtle difference between his ideas and Franklin's, so that Watson misinterpreted his ideas as being similar to Franklin's. In any case, there was no animosity between Watson and Franklin, and the Franklin model of electrical action, formulated in early 1747, eventually became widely accepted at that time. After Franklin's work, effluvia-based explanations were rarely put forward.
1680:, who lived from c. 624 to c. 546 BC, but there are doubts about whether Thales left any writings; his account about amber is known from an account from early 200s. This account can be taken as evidence that the phenomenon was known since at least c. 600 BC, but Thales explained this phenomenon as evidence for inanimate objects having a soul. In other words, there was no indication of any conception of electric charge. More generally, the ancient Greeks did not understand the connections among these four kinds of phenomena. The Greeks observed that the charged amber buttons could attract light objects such as 1805:, which he generated using a glass tube. He noticed that a cork, used to protect the tube from dust and moisture, also became electrified (charged). Further experiments (e.g., extending the cork by putting thin sticks into it) showed—for the first time—that electrical effluvia (as Gray called it) could be transmitted (conducted) over a distance. Gray managed to transmit charge with twine (765 feet) and wire (865 feet). Through these experiments, Gray discovered the importance of different materials, which facilitated or hindered the conduction of electrical effluvia. 1233: 40: 1414: 1405: 198: 1779:.) Gilbert hypothesized that this amber effect could be explained by an effluvium (a small stream of particles that flows from the electric object, without diminishing its bulk or weight) that acts on other objects. This idea of a material electrical effluvium was influential in the 17th and 18th centuries. It was a precursor to ideas developed in the 18th century about "electric fluid" (Dufay, Nollet, Franklin) and "electric charge". 2236: 4005: 1642: 1965:
stops considering electric charge as a special substance that accumulates in objects, and starts to understand electric charge as a consequence of the transformation of energy in the field. This pre-quantum understanding considered magnitude of electric charge to be a continuous quantity, even at the
1821:
Gray's discoveries introduced an important shift in the historical development of knowledge about electric charge. The fact that electrical effluvia could be transferred from one object to another, opened the theoretical possibility that this property was not inseparably connected to the bodies that
2039:
An established convention in the scientific community defines vitreous electrification as positive, and resinous electrification as negative. The exactly opposite properties of the two kinds of electrification justify our indicating them by opposite signs, but the application of the positive sign to
1908:
independently arrived at the same one-fluid explanation around the same time (1747). Watson, after seeing Franklin's letter to Collinson, claims that he had presented the same explanation as Franklin in spring 1747. Franklin had studied some of Watson's works prior to making his own experiments and
1903:
with resinous electricity after performing an experiment with a glass tube he had received from his overseas colleague Peter Collinson. The experiment had participant A charge the glass tube and participant B receive a shock to the knuckle from the charged tube. Franklin identified participant B to
1953:
In 1838, Faraday raised a question about whether electricity was a fluid or fluids or a property of matter, like gravity. He investigated whether matter could be charged with one kind of charge independently of the other. He came to the conclusion that electric charge was a relation between two or
1957:
In 1838, Faraday also put forth a theoretical explanation of electric force, while expressing neutrality about whether it originates from one, two, or no fluids. He focused on the idea that the normal state of particles is to be nonpolarized, and that when polarized, they seek to return to their
1817:
to refer to the effects of different materials in these experiments. Gray also discovered electrical induction (i.e., where charge could be transmitted from one object to another without any direct physical contact). For example, he showed that by bringing a charged glass tube close to, but not
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Sometimes macroscopic objects contain ions distributed throughout the material, rigidly bound in place, giving an overall net positive or negative charge to the object. Also, macroscopic objects made of conductive elements can more or less easily (depending on the element) take on or give off
1855:. In contemporary understanding, positive charge is now defined as the charge of a glass rod after being rubbed with a silk cloth, but it is arbitrary which type of charge is called positive and which is called negative. Another important two-fluid theory from this time was proposed by 2025:. Bodies may be electrified in many other ways, as well as by sliding. The electrical properties of the two pieces of glass are similar to each other but opposite to those of the two pieces of resin: The glass attracts what the resin repels and repels what the resin attracts. 2073:
without regard to whether it is carried by positive charges moving in the direction of the conventional current or by negative charges moving in the opposite direction. This macroscopic viewpoint is an approximation that simplifies electromagnetic concepts and calculations.
1886:
that held the accumulated charge. He posited that rubbing insulating surfaces together caused this fluid to change location, and that a flow of this fluid constitutes an electric current. He also posited that when matter contained an excess of the fluid it was
1794:, who in 1675 published the first book in English that was devoted solely to electrical phenomena. His work was largely a repetition of Gilbert's studies, but he also identified several more "electrics", and noted mutual attraction between two bodies. 1870:, based on an experiment that showed that a rubbed glass received the same, but opposite, charge strength as the cloth used to rub the glass. Franklin imagined electricity as being a type of invisible fluid present in all matter and coined the term 1995:
When a piece of glass and a piece of resin—neither of which exhibit any electrical properties—are rubbed together and left with the rubbed surfaces in contact, they still exhibit no electrical properties. When separated, they attract each other.
1456:. In this way, non-conductive materials can be charged to a significant degree, either positively or negatively. Charge taken from one material is moved to the other material, leaving an opposite charge of the same magnitude behind. The law of 1833:), showing that more or less all substances could be 'electrified' by rubbing, except for metals and fluids and proposed that electricity comes in two varieties that cancel each other, which he expressed in terms of a two-fluid theory. When 2332: 1818:
touching, a lump of lead that was sustained by a thread, it was possible to make the lead become electrified (e.g., to attract and repel brass filings). He attempted to explain this phenomenon with the idea of electrical effluvia.
2524: 1074:. If there are more electrons than protons in a piece of matter, it will have a negative charge, if there are fewer it will have a positive charge, and if there are equal numbers it will be neutral. Charge is 2232: 2392: 1926:
sought to remove any doubt that electricity is identical, regardless of the source by which it is produced. He discussed a variety of known forms, which he characterized as common electricity (e.g.,
1388:
is an atom (or group of atoms) that has lost one or more electrons, giving it a net positive charge (cation), or that has gained one or more electrons, giving it a net negative charge (anion).
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It is now known that the Franklin model was fundamentally correct. There is only one kind of electrical charge, and only one variable is required to keep track of the amount of charge.
174: 2262: 755: 1723:, which had been studied quantitatively since antiquity, the start of ongoing qualitative and quantitative research into electrical phenomena can be marked with the publication of 2453: 2424: 1436:
electrons, and then maintain a net negative or positive charge indefinitely. When the net electric charge of an object is non-zero and motionless, the phenomenon is known as
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in 1600. In this book, there was a small section where Gilbert returned to the amber effect (as he called it) in addressing many of the earlier theories, and coined the
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remains constant regardless of changes within the system itself. This law is inherent to all processes known to physics and can be derived in a local form from
1999:
A second piece of glass rubbed with a second piece of resin, then separated and suspended near the former pieces of glass and resin causes these phenomena:
1544:(the electric charge of the proton) is defined as a fundamental constant in the SI. The value for elementary charge, when expressed in SI units, is exactly 1432:
electrically bound to neutral atoms. Thus macroscopic objects tend toward being neutral overall, but macroscopic objects are rarely perfectly net neutral.
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If a body electrified in any manner whatsoever behaves as the glass does, that is, if it repels the glass and attracts the resin, the body is said to be
1981:
when two objects are brought together that are not at equilibrium. An electrostatic discharge creates a change in the charge of each of the two objects.
991: 1790:, but he did not recognize it primarily as an electrical device and only conducted minimal electrical experiments with it. Other European pioneers were 760: 1597:
charge seems to behave as a continuous quantity. In some contexts it is meaningful to speak of fractions of an elementary charge; for example, in the
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From ancient times, people were familiar with four types of phenomena that today would all be explained using the concept of electric charge: (a)
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has the same charge regardless of how fast it is travelling. This property has been experimentally verified by showing that the charge of one
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Up until about 1745, the main explanation for electrical attraction and repulsion was the idea that electrified bodies gave off an effluvium.
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object is the sum of the electric charges of the particles that it is made up of. This charge is often small, because matter is made of
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to jump, but there is also a claim that no mention of electric sparks appeared until late 17th century. This property derives from the
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are formed from two or more atoms that have been bonded together, in each case yielding an ion with a positive or negative net charge.
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nuclei (one proton and one neutron bound together, but moving much more slowly than they would if they were in a helium nucleus).
2067:. The movement of any of these charged particles constitutes an electric current. In many situations, it suffices to speak of the 1344:. Charged particles whose charges have the same sign repel one another, and particles whose charges have different signs attract. 1248:, the number of electrons is equal to the number of protons (which are positively charged), resulting in a net zero overall charge 2040:
one rather than to the other kind must be considered as a matter of arbitrary convention—just as it is a matter of convention in
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always applies, giving the object from which a negative charge is taken a positive charge of the same magnitude, and vice versa.
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During the formation of macroscopic objects, constituent atoms and ions usually combine to form structures composed of neutral
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Beware that, in the common and important case of metallic wires, the direction of the conventional current is opposite to the
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Even when an object's net charge is zero, the charge can be distributed non-uniformly in the object (e.g., due to an external
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is sometimes used in electrochemistry. One faraday is the magnitude of the charge of one mole of elementary charges, i.e.
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attraction or repulsion in the presence of other matter with charge. Electric charge is a characteristic property of many
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is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an
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Buchwald, Jed Z. (2013). "Electrodynamics from Thomson and Maxwell to Hertz". In Buchwald, Jed Z.; Fox, Robert (eds.).
3326: 1322:, but it is believed they always occur in multiples of integral charge; free-standing quarks have never been observed. 1286:
demonstrated this fact directly, and measured the elementary charge. It has been discovered that one type of particle,
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Electric field induced by a positive electric charge (left) and a field induced by a negative electric charge (right).
1193: 1039:. Like charges repel each other and unlike charges attract each other. An object with no net charge is referred to as 923: 798: 695: 1915:
Until 1800 it was only possible to study conduction of electric charge by using an electrostatic discharge. In 1800
590: 1066:. In ordinary matter, negative charge is carried by electrons, and positive charge is carried by the protons in the 1062:, the quantity of positive charge minus the amount of negative charge, cannot change. Electric charge is carried by 4040: 4009: 3957:
Singal, A.K. (1992). "On the charge invariance and relativistic electric fields from a steady conduction current".
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At the opposite extreme, if one looks at the microscopic situation, one sees there are many ways of carrying an
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subsequently discovered the particle that we now call the electron in 1897. The unit is today referred to as
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Two Kinds of Electrical Fluid: Vitreous and Resinous – 1733. Charles François de Cisternay DuFay (1698–1739)
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Steinle, Friedrich (2013). "Electromagnetism and field physics". In Buchwald, Jed Z.; Fox, Robert (eds.).
1458: 1197: 735: 505: 280: 3548: 1814: 1772: 1466: 1028: 833: 520: 510: 460: 450: 197: 1477:, while the charge on an object produced by electrons gained or lost from outside the object is called 1379:, in which case their charges cancel out, yielding a net charge of zero, thus making the atom neutral. 1352:
between two particles by asserting that the force is proportional to the product of their charges, and
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Thus, the conservation of electric charge, as expressed by the continuity equation, gives the result:
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more bodies, because he could not charge one body without having an opposite charge in another body.
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be positively charged after having been shocked by the tube. There is some ambiguity about whether
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was the first to show that charge could be maintained in continuous motion through a closed path.
1119:, but they are found only combined in particles that have a charge that is an integer multiple of 3908: 3822: 3763: 3728: 3526: 3455: 2107:
of the actual charge carriers; i.e., the electrons. This is a source of confusion for beginners.
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Watson, William (1748). "Some further inquiries into the nature and properties of electricity".
2866: 2819: 39: 3310: 1696:, a compacted form of coal, was noted to have an amber effect, and in the middle of the 1500s, 3982: 3687: 3639: 3635: 3606: 3596: 3572: 3400: 3375: 3369: 3348: 3262: 3256: 3169: 3159: 3075: 3069: 3061: 3028: 2843: 2779: 2752: 2706: 2553: 1863: 1783: 1677: 1661: 1594: 1541: 1325: 1147: 1081: 1048: 1016: 853: 86: 2773: 2327:{\displaystyle \mathbf {J} \cdot \mathrm {d} \mathbf {S} =\int J\mathrm {d} S\cos \theta =I.} 3974: 3900: 3812: 3755: 3720: 3592: 3518: 3447: 3155: 3144: 3005: 2967: 2932: 2897: 2546: 2164: 2126: 2097: 2078: 2052: 1939: 1931: 1916: 1705: 1605: 1486: 1440:. This can easily be produced by rubbing two dissimilar materials together, such as rubbing 1345: 1257: 1217: 1040: 953: 868: 828: 818: 705: 660: 643: 560: 495: 265: 189: 91: 3564: 3330: 2149: 2122: 2056: 1923: 1646: 1279: 1271: 1185: 1059: 888: 813: 808: 675: 550: 515: 410: 375: 3301:
The development of the concept of electric charge: Electricity from the Greeks to Coulomb
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The development of the concept of electric charge: Electricity from the Greeks to Coulomb
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The development of the concept of electric charge: Electricity from the Greeks to Coulomb
928: 3970: 3896: 3106: 3001: 2963: 2928: 2893: 1684:. They also found that if they rubbed the amber for long enough, they could even get an 1260:. The charges of free-standing particles are integer multiples of the elementary charge 3628: 3299: 3050: 2808: 2598: 2564: 2138: 2104: 1947: 1685: 1158: 1154: 1124: 1067: 848: 843: 665: 555: 480: 430: 380: 353: 310: 285: 255: 248: 44: 1961:
In developing a field theory approach to electrodynamics (starting in the mid-1850s),
1509:(symbol: C). The coulomb is defined as the quantity of charge that passes through the 4024: 3978: 3826: 3767: 3746:
Faraday, Michael (1838). "Experimental researches in electricity — eleventh series".
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electrified. All electrified bodies are either vitreously or resinously electrified.
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also showed this effect. Some efforts were made by Fracastoro and others, especially
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Roller, Duane; Roller, D.H.D. (1953). "The Prenatal History of Electrical Science".
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Roller, Duane; Roller, D.H.D. (1953). "The Prenatal History of Electrical Science".
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Roller, Duane; Roller, D.H.D. (1953). "The Prenatal History of Electrical Science".
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Roller, Duane; Roller, D.H.D. (1953). "The Prenatal History of Electrical Science".
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bound together in a nucleus and moving around at high speeds) is the same as two
1589:. The charge of an isolated system should be a multiple of the elementary charge 2090: 2032:
electrified, and if it attracts the glass and repels the resin it is said to be
1636: 1364: 1221: 1201: 1127:, charge is an absolutely conserved quantum number. The proton has a charge of + 863: 715: 545: 207: 96: 3395:
Heilbron, John (2003). "Leyden jar and electrophore". In Heilbron, John (ed.).
3096: 2627: 1413: 3553:(reprint ed.). Cambridge, MA: Harvard University Press. pp. 390–413. 3148: 1883: 1809:, who repeated many of Gray's experiments, is credited with coining the terms 1725: 1404: 580: 3986: 3904: 3451: 2519:{\displaystyle q=\int _{t_{\mathrm {i} }}^{t_{\mathrm {f} }}I\,\mathrm {d} t} 1866:
started electrical experiments in late 1746, and by 1750 had developed a one-
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proposed the unit 'electron' for this fundamental unit of electrical charge.
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or antielectron is an antiparticle or antimatter counterpart of the electron
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that act like positive particles; and both negative and positive particles (
1734: 1716: 1712: 1653: 1525:. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol 1209: 903: 878: 690: 615: 212: 3817: 3800: 3759: 3724: 3598:
Electricity in the 17th and 18th centuries: a study of early Modern physics
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Electricity in the 17th and 18th Centuries: A Study of Early Modern Physics
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Electricity in the 17th and 18th Centuries: A Study of Early Modern Physics
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Electricity in the 17th and 18th centuries: a study of early Modern physics
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Electricity in the 17th and 18th Centuries: A Study of Early Modern Physics
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is the electric charge contained within the volume defined by the surface.
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experiments, was the first to note the discrete nature of electric charge.
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as the charge acquired by a glass rod when it is rubbed with a silk cloth.
1146:. Before these particles were discovered, a positive charge was defined by 4004: 1047:, and is still accurate for problems that do not require consideration of 2603: 2064: 1502: 1376: 1329: 1241: 1139: 655: 650: 270: 2751:(9th ed.), International Bureau of Weights and Measures, Dec 2022, 2701:
Rennie, Richard; Law, Jonathan, eds. (2019). "Quantum electrodynamics".
1096:, which is the smallest charge that can exist freely. Particles called 2572: 1701: 1506: 1205: 1189: 1170: 625: 70: 65: 3438:
Guarnieri, Massimo (2014). "Electricity in the Age of Enlightenment".
3009: 2971: 2936: 2901: 2867:"Lives of the Eminent Philosophers by Diogenes Laërtius, Book 1, §24" 2568: 2561: 2060: 1826:, inspired by Gray's work, made a series of experiments (reported in 1720: 1522: 1518: 1469:, or bound polar molecules). In such cases, the object is said to be 1372: 1337: 1174: 1143: 1080:: it comes in integer multiples of individual small units called the 1020: 710: 217: 1641: 2839:
Thales of Miletus: The Beginnings of Western Science and Philosophy
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equals that of the corresponding particle, but with opposite sign.
1043:. Early knowledge of how charged substances interact is now called 3934:"How can we prove charge invariance under Lorentz Transformation?" 2055:
is the flow of electric charge through an object. The most common
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or other charged particles) flowing in opposite directions in an
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Today, a negative charge is defined as the charge carried by an
1071: 3474:"Electric charge and current - a short history | IOPSpark" 2227:{\displaystyle -{\frac {d}{dt}}\int _{V}\rho \,\mathrm {d} V=} 2086: 1669: 1445: 1384: 1742: 1672:
would attract small, light objects. The first account of the
3801:"Experimental researches in electricity — fourteenth series" 1244:, a negatively charged particle. In an electrically neutral 2133:. The conservation of charge results in the charge-current 1977:
refers to the electric charge of an object and the related
1878:
and some others); for example, he believed that it was the
1252:
Charge is the fundamental property of matter that exhibits
3135:
Heathcote, N.H. de V. (1950). "Guericke's sulphur globe".
2387:{\displaystyle I=-{\frac {\mathrm {d} q}{\mathrm {d} t}}.} 3805:
Philosophical Transactions of the Royal Society of London
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Philosophical Transactions of the Royal Society of London
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Philosophical Transactions of the Royal Society of London
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Philosophical Transactions of the Royal Society of London
1177:-mediated interactions among charged particles is called 3571:(rev ed.). Cambridge University Press. p. 13. 2533:
is the net outward current through a closed surface and
3709:"Experimental researches in electricity — third series" 2632:
The NIST Reference on Constants, Units, and Uncertainty
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is often attributed to the ancient Greek mathematician
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Aside from the properties described in articles about
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The Oxford Companion to the History of Modern Science
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to reckon positive distances towards the right hand.
151: 3374:. University of California Press. pp. 280–289. 3630:
Early electrodynamics: The first law of circulation
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Electricity and magnetism: A historical perspective
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Electricity and magnetism: A historical perspective
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Electricity and magnetism: A historical perspective
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Electricity and magnetism: A historical perspective
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Electricity and magnetism: A historical perspective
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Electricity and magnetism: A historical perspective
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Electricity and magnetism: A historical perspective
140: 129: 118: 105: 77: 64: 52: 32: 3627: 3399:. New York: Oxford University Press. p. 459. 3298: 3049: 2807: 2518: 2447: 2418: 2386: 2326: 2256: 2226: 2017:, and the bodies that exhibit them are said to be 168: 2006:Each piece of glass attracts each piece of resin. 1755:). The Latin word was translated into English as 2778:. New Delhi: Wiley Eastern Limited. p. 51. 3261:. University of California Press. p. 248. 3074:. University of California Press. p. 169. 2772:Gambhir, RS; Banerjee, D; Durgapal, MC (1993). 2556:. This means that any particle that has charge 1356:of the distance between them. The charge of an 1841:, du Fay said that the glass was charged with 3845:The Oxford Handbook of the history of physics 3786:The Oxford Handbook of the history of physics 3347:(2nd ed.). New York: Wiley. p. 40. 2622: 2620: 1708:to develop explanations for this phenomenon. 1473:. The charge due to polarization is known as 985: 8: 3878:"Relativistic invariance of electric charge" 3427:. Westport, CT: Greenwood Press. p. 38. 3418: 3416: 3286:. Westport, CT: Greenwood Press. p. 35. 3244:. Westport, CT: Greenwood Press. p. 28. 3229:. Westport, CT: Greenwood Press. p. 27. 3220: 3218: 3211:. Westport, CT: Greenwood Press. p. 21. 3196:. Westport, CT: Greenwood Press. p. 20. 3187: 3185: 3124:. Westport, CT: Greenwood Press. p. 11. 2983: 2981: 1775:from 1646. (For more linguistic details see 1371:, and atoms typically have equal numbers of 3838: 3836: 1212:it is common to use the elementary charge ( 1142:and a positive charge is that carried by a 3686:. Cambridge University Press. p. 31. 3542: 3540: 2724: 2722: 992: 978: 196: 180: 169:{\displaystyle {\mathsf {T}}{\mathsf {I}}} 38: 3816: 3489:"Letter to Peter Collinson, May 25, 1747" 3027:. London: The Athlone Press. p. 62. 2705:(8th ed.). Oxford University Press. 2508: 2507: 2495: 2494: 2489: 2481: 2480: 2475: 2463: 2438: 2437: 2431: 2409: 2408: 2402: 2370: 2360: 2357: 2346: 2298: 2284: 2279: 2271: 2269: 2244: 2213: 2212: 2203: 2184: 2179: 2009:The two pieces of resin repel each other. 2003:The two pieces of glass repel each other. 1891:charged and when it had a deficit it was 1759:. Gilbert is also credited with the term 160: 159: 153: 152: 150: 47:of a positive and a negative point charge 2137:. More generally, the rate of change in 1970:The role of charge in static electricity 1585:, with the charge of an electron being − 1481:. The motion of electrons in conductive 3863:A Treatise on Electricity and Magnetism 3847:. Oxford University Press. p. 575. 3788:. Oxford University Press. p. 560. 2616: 2455:is obtained by integrating both sides: 2257:{\displaystyle \scriptstyle \partial V} 2148:is equal to the area integral over the 741:Electromagnetism and special relativity 188: 3297:Roller, Duane; Roller, D.H.D. (1954). 3095:Brother Potamian; Walsh, J.J. (1909). 3048:Roller, Duane; Roller, D.H.D. (1954). 2806:Roller, Duane; Roller, D.H.D. (1954). 2686:Chabay, Ruth; Sherwood, Bruce (2015). 2671:Chabay, Ruth; Sherwood, Bruce (2015). 2656:Chabay, Ruth; Sherwood, Bruce (2015). 2628:"2022 CODATA Value: elementary charge" 2048:The role of charge in electric current 161: 154: 29: 2861: 2859: 2397:The charge transferred between times 1822:were electrified by rubbing. In 1733 1786:invented what was probably the first 1290:, have fractional charges of either − 1216:) as a unit. Chemistry also uses the 761:Maxwell equations in curved spacetime 7: 3569:The discovery of subatomic particles 3440:IEEE Industrial Electronics Magazine 2163:, which is in turn equal to the net 2013:This attraction and repulsion is an 1824:Charles François de Cisternay du Fay 1767:came later, first attributed to Sir 1485:in a specific direction is known as 1392:are formed from single atoms, while 1354:inversely proportional to the square 1131:, and the electron has a charge of − 2690:(4th ed.). Wiley. p. 942. 2675:(4th ed.). Wiley. p. 673. 2660:(4th ed.). Wiley. p. 867. 1100:have smaller charges, multiples of 2509: 2496: 2482: 2439: 2410: 2371: 2361: 2299: 2280: 2247: 2214: 1946:), and animal electricity (e.g., 1163:electromagnetic (or Lorentz) force 1157:. A moving charge also produces a 27:Electromagnetic property of matter 25: 3487:Franklin, Benjamin (1747-05-25). 2745:The International System of Units 1895:charged. He identified the term 1633:History of electromagnetic theory 1264:; we say that electric charge is 1192:(C) named after French physicist 4003: 3885:Zeitschrift fĂŒr Naturforschung A 2448:{\displaystyle t_{\mathrm {f} }} 2419:{\displaystyle t_{\mathrm {i} }} 2285: 2272: 2234: 2121:The total electric charge of an 1533:, or indirectly measured with a 1412: 1403: 1236:Diagram showing field lines and 3866:, pp. 32–33, Dover Publications 2144:within a volume of integration 2111:Conservation of electric charge 1938:), voltaic electricity (e.g., 1692:. In late 1100s, the substance 1023:that causes it to experience a 3603:University of California Press 3166:University of California Press 3025:The mathematics of measurement 2775:Foundations of Physics, Vol. 2 1899:with vitreous electricity and 1599:fractional quantum Hall effect 1565:character of charge, in 1891, 1: 4016:How fast does a charge decay? 1958:natural, nonpolarized state. 1348:quantifies the electrostatic 1220:, which is the charge of one 1200:it is also common to use the 766:Relativistic electromagnetism 3979:10.1016/0375-9601(92)90982-R 3634:. Oxford: Pergamon. p.  3343:Wangsness, Roald K. (1986). 1830:AcadĂ©mie Royale des Sciences 3491:. Letter to Peter Collinson 2990:American Journal of Physics 2952:American Journal of Physics 2917:American Journal of Physics 2882:American Journal of Physics 2155:through the closed surface 2063:and the negatively charged 2059:are the positively charged 1868:fluid theory of electricity 1807:John Theophilus Desaguliers 1194:Charles-Augustin de Coulomb 1165:, which is one of the four 4082: 4066:Electromagnetic quantities 4056:Flavour (particle physics) 3547:Cohen, I. Bernard (1966). 2730:"CIPM, 1946: Resolution 2" 2114: 1988: 1985:Electrification by sliding 1743: 1637:Electricity § History 1630: 1579:fundamental unit of charge 1505:of electric charge is the 1188:of electric charge is the 491:LiĂ©nard–Wiechert potential 3938:physics.stackexchange.com 3799:Faraday, Michael (1838). 3707:Faraday, Michael (1833). 3682:Zangwill, Andrew (2013). 3149:10.1080/00033795000201981 2589:SI electromagnetism units 1729:by the English scientist 1363:The electric charge of a 1153:Electric charges produce 1045:classical electrodynamics 1031:. Electric charge can be 756:Mathematical descriptions 466:Electromagnetic radiation 456:Electromagnetic induction 396:Magnetic vector potential 391:Magnetic scalar potential 37: 3905:10.1515/zna-1999-10-1113 3876:Jefimenko, O.D. (1999). 3452:10.1109/MIE.2014.2335431 3307:Harvard University Press 3103:Fordham University Press 3058:Harvard University Press 2816:Harvard University Press 1777:Etymology of electricity 1167:fundamental interactions 3626:Tricker, R.A.R (1965). 3423:Baigrie, Brian (2007). 3368:Heilbron, J.L. (1979). 3282:Baigrie, Brian (2007). 3255:Heilbron, J.L. (1979). 3240:Baigrie, Brian (2007). 3225:Baigrie, Brian (2007). 3207:Baigrie, Brian (2007). 3192:Baigrie, Brian (2007). 3120:Baigrie, Brian (2007). 3068:Heilbron, J.L. (1979). 2703:A Dictionary of Physics 2688:Matter and interactions 2673:Matter and interactions 2658:Matter and interactions 2541:Relativistic invariance 1979:electrostatic discharge 1801:was experimenting with 1788:electrostatic generator 1660:(or electric ray), (c) 1224:of elementary charges. 1179:quantum electrodynamics 1058:: the net charge of an 306:Electrostatic induction 301:Electrostatic discharge 3818:10.1098/rstl.1838.0014 3760:10.1098/rstl.1838.0002 3725:10.1098/rstl.1833.0006 3684:Modern Electrodynamics 3523:10.1098/rstl.1748.0004 3345:Electromagnetic Fields 2842:. Ashgate. p. 8. 2520: 2449: 2420: 2388: 2328: 2258: 2228: 1649: 1561:After discovering the 1535:ballistic galvanometer 1459:conservation of charge 1249: 1198:electrical engineering 736:Electromagnetic tensor 170: 3659:Denker, John (2007). 3098:Makers of electricity 2521: 2450: 2421: 2389: 2329: 2259: 2229: 2015:electrical phenomenon 1989:Further information: 1773:Pseudodoxia Epidemica 1644: 1467:electromagnetic field 1235: 1054:Electric charge is a 1029:electromagnetic field 729:Covariant formulation 521:Synchrotron radiation 461:Electromagnetic pulse 451:Electromagnetic field 171: 4012:at Wikimedia Commons 3665:www.av8n.com/physics 3661:"One Kind of Charge" 3168:. pp. 215–218. 3023:Roche, J.J. (1998). 2834:O'Grady, Patricia F. 2462: 2430: 2401: 2345: 2268: 2243: 2178: 2070:conventional current 2042:mathematical diagram 2023:electrically charged 1991:Triboelectric effect 1690:triboelectric effect 1581:, or simply denoted 1515:electrical conductor 1041:electrically neutral 771:Stress–energy tensor 696:Reluctance (complex) 441:Displacement current 149: 18:Electrically neutral 4036:Chemical properties 3971:1992PhLA..162...91S 3897:1999ZNatA..54..637J 3858:James Clerk Maxwell 3550:Franklin and Newton 3002:1953AmJPh..21..343R 2964:1953AmJPh..21..343R 2929:1953AmJPh..21..343R 2894:1953AmJPh..21..343R 2503: 2135:continuity equation 2117:Charge conservation 1966:microscopic level. 1963:James Clerk Maxwell 1874:itself (as well as 1857:Jean-Antoine Nollet 1698:Girolamo Fracastoro 1328:, the charge of an 1284:oil drop experiment 1258:subatomic particles 1064:subatomic particles 686:Magnetomotive force 571:Electromotive force 541:Alternating current 476:Jefimenko equations 436:Cyclotron radiation 3891:(10–11): 637–644. 3605:. pp. 344–5. 3329:2009-05-26 at the 2516: 2471: 2445: 2416: 2384: 2324: 2254: 2253: 2224: 1975:Static electricity 1936:magnetic induction 1928:static electricity 1803:static electricity 1700:, discovered that 1650: 1438:static electricity 1336:, while that of a 1250: 1056:conserved property 1027:when placed in an 534:Electrical network 371:Gauss magnetic law 336:Static electricity 296:Electric potential 166: 109:SI base units 4041:Conservation laws 4008:Media related to 3959:Physics Letters A 3693:978-0-521-89697-9 3381:978-0-520-03478-5 3333:. sparkmuseum.com 3305:. Cambridge, MA: 3268:978-0-520-03478-5 3137:Annals of Science 3081:978-0-520-03478-5 3056:. Cambridge, MA: 3010:10.1119/1.1933449 2972:10.1119/1.1933449 2937:10.1119/1.1933449 2902:10.1119/1.1933449 2814:. Cambridge, MA: 2758:978-92-822-2272-0 2379: 2197: 1864:Benjamin Franklin 1784:Otto von Guericke 1763:, while the term 1678:Thales of Miletus 1575:elementary charge 1542:elementary charge 1148:Benjamin Franklin 1082:elementary charge 1017:physical property 1002: 1001: 701:Reluctance (real) 671:Gyrator–capacitor 616:Resonant cavities 506:Maxwell equations 179: 178: 87:elementary charge 16:(Redirected from 4073: 4007: 3991: 3990: 3954: 3948: 3947: 3945: 3944: 3930: 3924: 3923: 3921: 3919: 3882: 3873: 3867: 3855: 3849: 3848: 3840: 3831: 3830: 3820: 3796: 3790: 3789: 3781: 3775: 3774: 3743: 3737: 3736: 3704: 3698: 3697: 3679: 3673: 3672: 3667:. Archived from 3656: 3650: 3649: 3633: 3623: 3617: 3616: 3589: 3583: 3582: 3565:Weinberg, Steven 3561: 3555: 3554: 3544: 3535: 3534: 3506: 3500: 3499: 3497: 3496: 3484: 3478: 3477: 3470: 3464: 3463: 3435: 3429: 3428: 3420: 3411: 3410: 3392: 3386: 3385: 3365: 3359: 3358: 3340: 3334: 3321: 3315: 3314: 3304: 3294: 3288: 3287: 3279: 3273: 3272: 3252: 3246: 3245: 3237: 3231: 3230: 3222: 3213: 3212: 3204: 3198: 3197: 3189: 3180: 3179: 3152: 3132: 3126: 3125: 3117: 3111: 3110: 3092: 3086: 3085: 3065: 3055: 3045: 3039: 3038: 3020: 3014: 3013: 2985: 2976: 2975: 2947: 2941: 2940: 2912: 2906: 2905: 2877: 2871: 2870: 2863: 2854: 2853: 2830: 2824: 2823: 2813: 2803: 2797: 2796: 2794: 2792: 2769: 2763: 2761: 2750: 2740: 2734: 2733: 2726: 2717: 2716: 2698: 2692: 2691: 2683: 2677: 2676: 2668: 2662: 2661: 2653: 2647: 2646: 2644: 2643: 2624: 2547:electromagnetism 2525: 2523: 2522: 2517: 2512: 2502: 2501: 2500: 2499: 2488: 2487: 2486: 2485: 2454: 2452: 2451: 2446: 2444: 2443: 2442: 2425: 2423: 2422: 2417: 2415: 2414: 2413: 2393: 2391: 2390: 2385: 2380: 2378: 2374: 2368: 2364: 2358: 2334: 2333: 2331: 2330: 2325: 2302: 2288: 2283: 2275: 2264: 2263: 2261: 2260: 2255: 2238: 2237: 2233: 2231: 2230: 2225: 2217: 2208: 2207: 2198: 2196: 2185: 2127:gauge invariance 2079:electric current 2053:Electric current 1940:electric current 1932:piezoelectricity 1917:Alessandro Volta 1837:was rubbed with 1747:(ēlektron), the 1746: 1745: 1706:Gerolamo Cardano 1622: 1620: 1616: 1613: 1557: 1555: 1552: 1549: 1487:electric current 1416: 1407: 1321: 1319: 1318: 1315: 1312: 1305: 1303: 1302: 1299: 1296: 1218:Faraday constant 1115: 1113: 1112: 1109: 1106: 1095: 1093: 994: 987: 980: 661:Electric machine 644:Magnetic circuit 606:Parallel circuit 596:Network analysis 561:Electric current 496:London equations 341:Triboelectricity 331:Potential energy 200: 190:Electromagnetism 181: 175: 173: 172: 167: 165: 164: 158: 157: 110: 42: 30: 21: 4081: 4080: 4076: 4075: 4074: 4072: 4071: 4070: 4031:Electric charge 4021: 4020: 4010:Electric charge 4000: 3995: 3994: 3956: 3955: 3951: 3942: 3940: 3932: 3931: 3927: 3917: 3915: 3880: 3875: 3874: 3870: 3856: 3852: 3842: 3841: 3834: 3798: 3797: 3793: 3783: 3782: 3778: 3745: 3744: 3740: 3706: 3705: 3701: 3694: 3681: 3680: 3676: 3658: 3657: 3653: 3646: 3625: 3624: 3620: 3613: 3591: 3590: 3586: 3579: 3563: 3562: 3558: 3546: 3545: 3538: 3508: 3507: 3503: 3494: 3492: 3486: 3485: 3481: 3472: 3471: 3467: 3437: 3436: 3432: 3422: 3421: 3414: 3407: 3394: 3393: 3389: 3382: 3367: 3366: 3362: 3355: 3342: 3341: 3337: 3331:Wayback Machine 3322: 3318: 3296: 3295: 3291: 3281: 3280: 3276: 3269: 3254: 3253: 3249: 3239: 3238: 3234: 3224: 3223: 3216: 3206: 3205: 3201: 3191: 3190: 3183: 3176: 3154: 3153: 3134: 3133: 3129: 3119: 3118: 3114: 3094: 3093: 3089: 3082: 3067: 3066: 3047: 3046: 3042: 3035: 3022: 3021: 3017: 2987: 2986: 2979: 2949: 2948: 2944: 2914: 2913: 2909: 2879: 2878: 2874: 2865: 2864: 2857: 2850: 2832: 2831: 2827: 2805: 2804: 2800: 2790: 2788: 2786: 2771: 2770: 2766: 2759: 2748: 2742: 2741: 2737: 2728: 2727: 2720: 2713: 2700: 2699: 2695: 2685: 2684: 2680: 2670: 2669: 2665: 2655: 2654: 2650: 2641: 2639: 2626: 2625: 2618: 2613: 2585: 2543: 2490: 2476: 2460: 2459: 2433: 2428: 2427: 2404: 2399: 2398: 2369: 2359: 2343: 2342: 2266: 2265: 2241: 2240: 2239: 2235: 2199: 2189: 2176: 2175: 2174: 2150:current density 2123:isolated system 2119: 2113: 2057:charge carriers 2050: 1993: 1987: 1972: 1924:Michael Faraday 1731:William Gilbert 1711:In contrast to 1664:, and (d) that 1647:torsion balance 1639: 1629: 1618: 1614: 1611: 1609: 1553: 1550: 1547: 1545: 1495: 1430:ionic compounds 1426: 1425: 1424: 1423: 1419: 1418: 1417: 1409: 1408: 1394:polyatomic ions 1316: 1313: 1310: 1309: 1307: 1300: 1297: 1294: 1293: 1291: 1280:Robert Millikan 1272:Michael Faraday 1230: 1186:SI derived unit 1173:. The study of 1155:electric fields 1110: 1107: 1104: 1103: 1101: 1091: 1089: 1060:isolated system 1049:quantum effects 1005:Electric charge 998: 969: 968: 784: 776: 775: 731: 721: 720: 676:Induction motor 646: 636: 635: 551:Current density 536: 526: 525: 516:Poynting vector 426: 424:Electrodynamics 416: 415: 411:Right-hand rule 376:Magnetic dipole 366:Biot–Savart law 356: 346: 345: 281:Electric dipole 276:Electric charge 251: 147: 146: 108: 101: 80: 55: 48: 33:Electric charge 28: 23: 22: 15: 12: 11: 5: 4079: 4077: 4069: 4068: 4063: 4058: 4053: 4051:Electrostatics 4048: 4043: 4038: 4033: 4023: 4022: 4019: 4018: 4013: 3999: 3998:External links 3996: 3993: 3992: 3949: 3925: 3868: 3850: 3832: 3791: 3776: 3738: 3699: 3692: 3674: 3671:on 2016-02-05. 3651: 3644: 3618: 3611: 3593:Heilbron, J.L. 3584: 3577: 3556: 3536: 3501: 3479: 3465: 3430: 3412: 3405: 3387: 3380: 3360: 3353: 3335: 3316: 3289: 3274: 3267: 3247: 3232: 3214: 3199: 3181: 3174: 3156:Heilbron, J.L. 3127: 3112: 3087: 3080: 3040: 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1238:equipotentials 1229: 1226: 1159:magnetic field 1125:Standard Model 1000: 999: 997: 996: 989: 982: 974: 971: 970: 967: 966: 961: 956: 951: 946: 941: 936: 931: 926: 921: 916: 911: 906: 901: 896: 891: 886: 881: 876: 871: 866: 861: 856: 851: 846: 841: 836: 831: 826: 821: 816: 811: 806: 801: 796: 791: 785: 782: 781: 778: 777: 774: 773: 768: 763: 758: 753: 751:Four-potential 748: 743: 738: 732: 727: 726: 723: 722: 719: 718: 713: 708: 703: 698: 693: 688: 683: 678: 673: 668: 666:Electric motor 663: 658: 653: 647: 642: 641: 638: 637: 634: 633: 628: 623: 621:Series circuit 618: 613: 608: 603: 598: 593: 591:Kirchhoff laws 588: 583: 578: 573: 568: 563: 558: 556:Direct current 553: 548: 543: 537: 532: 531: 528: 527: 524: 523: 518: 513: 511:Maxwell tensor 508: 503: 498: 493: 488: 483: 481:Larmor formula 478: 473: 468: 463: 458: 453: 448: 443: 438: 433: 431:Bremsstrahlung 427: 422: 421: 418: 417: 414: 413: 408: 403: 398: 393: 388: 383: 381:Magnetic field 378: 373: 368: 363: 357: 354:Magnetostatics 352: 351: 348: 347: 344: 343: 338: 333: 328: 323: 318: 313: 308: 303: 298: 293: 288: 286:Electric field 283: 278: 273: 268: 263: 258: 256:Charge density 252: 249:Electrostatics 247: 246: 243: 242: 241: 240: 235: 230: 225: 220: 215: 210: 202: 201: 193: 192: 186: 185: 184:Articles about 177: 176: 163: 156: 144: 138: 137: 134: 127: 126: 123: 116: 115: 112: 103: 102: 100: 99: 94: 89: 83: 81: 78: 75: 74: 68: 62: 61: 56: 54:Common symbols 53: 50: 49: 45:Electric field 43: 35: 34: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4078: 4067: 4064: 4062: 4059: 4057: 4054: 4052: 4049: 4047: 4044: 4042: 4039: 4037: 4034: 4032: 4029: 4028: 4026: 4017: 4014: 4011: 4006: 4002: 4001: 3997: 3988: 3984: 3980: 3976: 3972: 3968: 3964: 3960: 3953: 3950: 3939: 3935: 3929: 3926: 3914: 3910: 3906: 3902: 3898: 3894: 3890: 3886: 3879: 3872: 3869: 3865: 3864: 3859: 3854: 3851: 3846: 3839: 3837: 3833: 3828: 3824: 3819: 3814: 3810: 3806: 3802: 3795: 3792: 3787: 3780: 3777: 3773: 3769: 3765: 3761: 3757: 3753: 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Index

Electrically neutral

Electric field
SI unit
coulomb
elementary charge
faraday
ampere-hour
SI base units
Extensive
Conserved
Dimension
Electromagnetism
Solenoid
Electricity
Magnetism
Optics
History
Computational
Textbooks
Phenomena
Electrostatics
Charge density
Conductor
Coulomb law
Electret
Electric charge
Electric dipole
Electric field
Electric flux

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