erg

views updated Jun 11 2018

erg
1. A ‘sand sea’ in a hot desert. It is a feature of the Sahara, where sand is typically accumulated in wide shallow basins as alluvial and lacustrine deposits derived from adjacent rocky desert during the Cenozoic. It is often very large: the Grand Erg Oriental covers 196 000 km2 in Algeria and Tunisia.

2. The unit of energy or work in the c.g.s. system; 1 erg = 10−7 J.

erg

views updated May 08 2018

erg
1. Sand sea in a hot desert. It is a feature of the Sahara, where sand typically is accumulated in wide shallow basins as alluvial and lacustrine deposits derived from adjacent rocky desert during the Cenozoic. It is often very large: the Grand Erg Oriental covers 196000 km2 in Algeria and Tunisia.

2. Unit of energy of work in the c.g.s.system. 1 erg = 10−7 J.

erg

views updated May 21 2018

erg / ərg/ • n. Physics a unit of work or energy, equal to the work done by a force of one dyne when its point of application moves one centimeter in the direction of action of the force.erg2 / erg/ • n. an area of shifting sand dunes in the Sahara.

erg

views updated May 11 2018

erg unit of work. XIX. — Gr. érgon WORK.

erg-

views updated May 21 2018

erg- (ergo-) combining form denoting work or activity.

ERG

views updated May 23 2018

ERG electrical resistance gauge
• Med. electroretinogram