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torque

(Encyclopedia)torque, in physics, that which tends to change the rate of rotation of a body; also called the moment of force. The torque produced by rotating parts of an electric motor or internal-combustion engine...

fog

(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...

ellipse

(Encyclopedia)CE5 Ellipse ellipse, closed plane curve consisting of all points for which the sum of the distances between a point on the curve and two fixed points (foci) is the same. It is the conic section fo...

Celsius temperature scale

(Encyclopedia)Celsius temperature scale sĕlˈsēəs [key], temperature scale according to which the temperature difference between the reference temperatures of the freezing and boiling points of water is divided ...

Oberalp

(Encyclopedia)Oberalp ōˈbər-älp [key], Alpine pass, 6,733 ft (2,052 m) high, between Grisons and Uri cantons, S central Switzerland. Oberalpsee, a small lake, is nearby, and the Alpine peak Oberalpstock, 10,926...

superconductivity

(Encyclopedia)superconductivity, abnormally high electrical conductivity of certain substances. The phenomenon was discovered in 1911 by Heike Kamerlingh Onnes, who found that the resistance of mercury dropped sudd...

Geneva, canton and city, Switzerland

(Encyclopedia)Geneva jənēˈvə [key], Fr. Genève, canton, 109 sq mi (282 sq km), SW Switzerland, surroun...

open enrollment

(Encyclopedia)open enrollment, a policy of admitting to college all high-school graduates in an effort to provide a higher education for all who desire it. To critics it means an inevitable lowering of standards as...

Odenwald

(Encyclopedia)Odenwald ōˈdənvält [key], hilly, forested region, S central Germany, bordering on the Neckar and Main rivers and the Rhine plain. Its highest point (2,055 ft/626 m) is the Katzenbuckel. Fruit and ...

nadir

(Encyclopedia)nadir nāˈdər [key] [Arab.,=opposite], in astronomy, the point on the celestial sphere directly opposite the zenith, i.e., directly beneath the observer. ...