negative charge - meaning and definition. What is negative charge
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What (who) is negative charge - definition

PHYSICAL PROPERTY THAT QUANTIFIES AN OBJECT'S INTERACTION WITH ELECTRIC FIELDS
Electric Charge; Electrical charge; Positive charge; Negative charge; Positive static charge; Electric charges; Electrically charged; Electrostatic charge; Negative Charge; Positive Charge; Q (electricity); Electrically neutral; Positive electricity; Positively charged; Negatively charged; Electrification by friction; Elementary electrostatic charge; Capacitor charge; Vitreous charge; Resinous charge; Charge neutrality
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  • Diagram showing field lines and [[equipotential]]s around an [[electron]], a negatively charged particle. In an electrically neutral [[atom]], the number of electrons is equal to the number of protons (which are positively charged), resulting in a net zero overall charge

Negative Charge         
One of the two kinds of electric charges. The other is the positive. By the double fluid hypothesis this is assumed to be a charge of a particular kind of electricity--negative electricity. By the single fluid hypothesis it is supposed to be caused by the absence of part of the normal electricity of a surface. The reverse is held by some theorists. The subject is so purely theoretical that neither of the two hypotheses is accepted as final. [Transcriber's note: Current is a wire is the motion of negative electrons. Current in a electrolyte is the motion of positive ions and negative ions. Current in a plasma is the motion of electrons and positive ions.]
Positive Electricity         
The kind of electricity with which a piece of glass is charged when rubbed with silk; vitreous electricity. In a galvanic cell the surface of the copper or carbon plate is charged with positive electricity. (See Electrostatic Series.) According to the single fluid theory positive electrification consists in a surplus of electricity. [Transcriber's note: "Positive electricity" is a deficiency of electrons.]
Charge d'affaires         
HEAD OF DIPLOMATIC MISSION WHEN NO HIGHER OFFICIAL EXISTS
Charge D'affaires; Charge d'affaires; Charge d'affair; Chargé d'Affaires; Charges d'Affaires; Charge d'Affaires; Chargé d’affaires; Chargé d'affaires a.i.; Charge d'affairs; Charge d’affaires; Charge d'affaires a.i.; Chargé d’Affaires; Chargé d'affaires ad interim; Charge d'affaires ad interim; Chargés d’affaires ad interim; Charge D'Affaires; Chargé d'Affaires a.i.; Chargé d'Affaires ad interim; Chargés d'affaires; Chargé d’affairs; Chargés d'Affaires; Charge daffaires; Chargée d’Affaires; Chargés d'affaires ad interim; Chargée d'affaires; Chargé D'Affaires; Charges d'affaires

Wikipedia

Electric charge

Electric charge is the physical property of matter that causes matter to experience a force when placed in an electromagnetic field. Electric charge can be positive or negative (commonly carried by protons and electrons respectively, by convention). Like charges repel each other and unlike charges attract each other. An object with an absence of net charge is referred to as neutral. Early knowledge of how charged substances interact is now called classical electrodynamics, and is still accurate for problems that do not require consideration of quantum effects.

Electric charge is a conserved property; the net charge of an isolated system, the amount of positive charge minus the amount of negative charge, cannot change. Electric charge is carried by subatomic particles. In ordinary matter, negative charge is carried by electrons, and positive charge is carried by the protons in the nuclei of atoms. 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 quantized; it comes in integer multiples of individual small units called the elementary charge, e, about 1.602×10−19 C, which is the smallest charge that can exist freely (particles called quarks have smaller charges, multiples of 1/3e, but they are found only in combination, and always combine to form particles that have a charge that is an integer multiple of e). The proton has a charge of +e, and the electron has a charge of −e.

Electric charges produce electric fields. A moving charge also produces a magnetic field. The interaction of electric charges with an electromagnetic field (a combination of an electric and a magnetic field) is the source of the electromagnetic (or Lorentz) force, which is one of the four fundamental interactions in physics. The study of photon-mediated interactions among charged particles is called quantum electrodynamics.

The SI derived unit of electric charge is the coulomb (C) named after French physicist Charles-Augustin de Coulomb. In electrical engineering it is also common to use the ampere-hour (A⋅h). In physics and chemistry it is common to use the elementary charge (e) as a unit. Chemistry also uses the Faraday constant, which is the charge of one mole of elementary charges. The lowercase symbol q often denotes charge.

Examples of use of negative charge
1. An anion, described as an ionic species with a negative charge, plays an important role in checking air pollution.
2. Minkenberg points out the path of the muons, elementary particles that bear a negative charge, a heavy version of an electron.
3. The charge arises when crystals which have no axis of symmetry are squeezed: the centre of the positive charge in the crystals‘ ions is slightly separated from the centre of the negative charge.
4. He learned that an electric current has a positive and negative charge. (That‘s why batteries have both a positive and negative side.) Mail your best friend a birthday card.
5. Researchers at The Hebrew University have discovered that since the surface of the eye bears a negative charge, using positively–charged emulsions that contain an oily core in which the desired drug is dissolved helps medications get absorbed faster than existing preparations.