A abampere (aA) The unit of electric current in the CGSeniu system, defined as that current that, if flowing through two parallel conductors of negligible cross section and infinite length, placed 1 cm apart in vacuo, would produce on each conductor a force of 1 dyne per centimeter of length. 1 abampere = 1 abcoulomb/s = r statampere (where c = speed of light in cm/s) = 10 ampere. aberration Imperfect image formation due to geometric imperfections in the optical elements of a system ablation 1 . The wasting of glacier ice by any process (calving, melting, evaporation, etc.). 2. The shedding of molten material from the outer sur- face of a meteorite or tektite during its flight through the atmosphere. absolute age The age of a natural substance, of a fossil or living organism, or of an artifact, obtained by means of an absolute dating method. See absolute dating method. absolute density Density in kg/m' or, more commonly, in g/cm\ both at STP. Cf. density, relative density abso
The Industrial Revolution class 11 HIstory MCQ & SAQ The Industrial Revolution class 11 HIstory NCERT SOLUTION: How did Britain's involvement in wars from 1793 to 1815 affect British industries? Answer: After 1793, industrialization witnessed the disruptive effects of the French Revolutionary and Napoleonic Wars. Capital investment, infrastructure with new machinery and industrial output were affected significantly. Only after the 1820s did the productive investment improve and total output of industrial goods increase. What were the relative advantages of canal and railway transportation? Answer: Canals were initially built to transport coal to cities. They made coal transportation faster and less expensive than by road. With the development of canals, many marketing centers emerged in new towns. The first steam locomotive was invented by Stephenson's Rocket in 1814. Railway transport was available throughout the year; it could carry passengers and move goods fast. The
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