Quantity of electricity that flows in electric currents or that accumulates on the surfaces of dissimilar nonmetallic substances that are rubbed together briskly. It occurs in discrete natural units, equal to the charge of an electron or proton. It cannot be created or destroyed. Charge can be positive or negative; one positive charge can combine with one negative charge, and the result is a net charge of zero. Two objects that have an excess of the same type of charge repel each other, while two objects with an excess of opposite charge attract each other. The unit of charge is the coulomb, which consists of 6.24 × 1018 natural units of electric charge.
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Weapon used by ships or aircraft to attack submerged submarines. Developed by the British in World War I for use against German submarines, it consisted of a canister filled with explosives and dropped off the stern of a ship near a submerged submarine. It rarely exploded close enough to sink the submarine, but its shock waves loosened the submarine's joints and damaged its instruments, forcing it to the surface, where naval gunfire could finish it off. Modern depth charges can be fired as far as 2,000 yards (1,800 m) from a ship's deck or launched from aircraft. Atomic depth charges have a nuclear warhead and a vastly increased killing radius.
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Small card that authorizes the person named on it to charge goods or services to his or her account. It differs from a debit card, with which money is automatically deducted from the bank account of the cardholder to pay for the goods or services. Credit-card use originated in the U.S. in the 1920s; early credit cards were issued by various firms (e.g., oil companies and hotel chains) for use at their outlets only. The first universal credit card, accepted by a variety of establishments, was issued by Diners' Club in 1950. Charge cards such as American Express require cardholders to pay for all purchases at the end of the billing period (usually monthly). Bank cards such as MasterCard and Visa allow customers to pay only a portion of their bill; interest accrues on the unpaid balance. Credit-card companies get revenue from annual fees and interest paid by cardholders and from fees paid by participating merchants.
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Charge or Charged may refer to:
It may also refer to:
extra charge needed