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root, in mathematics

(Encyclopedia)root, in mathematics, number or quantity r for which an equation f(r)=0 holds true, where f is some function. If f is a polynomial, r is called a root of f; for example, r=3 and r=−4 are roots of th...

scale, in weights and measures

(Encyclopedia)scale, in weights and measures, instruments for determining weight, generally for other than laboratory use. For the principles of operation of all weighing devices, see balance. Platform scales utili...

Sanader, Ivo

(Encyclopedia)Sanader, Ivo ēˈvō sänändârˈ [key], 1953–, Croatian political leader, b. Split. He worked in marketing and publishing until 1991, when he became manager of the Croatian National Theater in Spl...

smart weapon

(Encyclopedia)smart weapon, missile or steerable bomb equipped with a laser, television, or satellite guidance system. Smart weapons, which use guidance systems that rely on external assistance, are distinguished f...

spraying

(Encyclopedia)spraying, horticultural practice of applying fungicides, insecticides, and herbicides, usually in solution, to plants. It may be accomplished by various means, e.g., the watering can, sprinkler attach...

prime minister

(Encyclopedia)prime minister or premier, chief member of the cabinet in a parliamentary system of government. The prime minister is head of the government, in contrast with the head of state, who may be a constitut...

procedure

(Encyclopedia)procedure, in law, the rules that govern the obtaining of legal redress. This article deals only with civil procedure in Anglo-American law (for criminal procedure, see criminal law). Except for evide...

interference

(Encyclopedia)CE5 Constructive interference: Two crests or two troughs meet and combine (A, B, C). Destructive interference: A crest and a trough meet and cancel each other (D, E, F). interference, in physics, ...

Germanic languages

(Encyclopedia)Germanic languages, subfamily of the Indo-European family of languages, spoken by about 470 million people in many parts of the world, but chiefly in Europe and the Western Hemisphere. All the modern ...

Doyle, Sir Arthur Conan

(Encyclopedia)Doyle, Sir Arthur Conan kōˈnən, kŏnˈən [key], 1859–1930, British author and creator of Sherlock Holmes, b. Edinburgh. Educated at the Royal Infirmary in Edinburgh, he received a medical degree...