set introduction

Consider a simple quadratic equation x 2 + 1 = 0. There is no real number which satisfies this equation. So there was a need to find a system which could answer to this problem. Euler used the symbol 'i' to denote to solve the above equation. Complex number system consists of the ..

O. Henry, is the pseudonym for William Sydney Porter (1862 - 1910), American writer of short stories, best known for his ironic plot twists and surprise endings. Born and raised in Greensboro, North Carolina, O. Henry was fascinated by New York street life, which provided a setting fo..

. In these methods, the energy is said to be transferred in the form of waves. Other examples of energy propagation by transfer of matter are Electric current in a wire Air currents set up by unequal heating of the surface of the Earth Ocean tides in which energy is transmitted by a fluid..

Introduction to Electrolysis - "Electrolysis is the electrolytic dissociation and decomposition of an electrolyte (electrovalent substance), by the passage of a direct current or electricity through its aqueous or molten form." The process of electrolysis is not a simple chemical reaction..

There is a set of rules, which govern how units of meaning may be constructed in any languag..

Introduction - O. Henry, is the pseudonym for William Sydney Porter (1862 - 1910), American writer of short stories, best known for his ironic plot twists and surprise endings. Born and raised in Greensboro, North Carolina, O. Henry was fascinated by New York street life, which provided a..

Introduction - Very often, energy is generated at one place but consumed elsewhere. The transportation of energy from its source to the receiving end can be done in two ways: By actually moving the matter carrying kinetic energy and delivering it to the other end. By the vibration of the ..

Introduction - Sometimes it is necessary in geometry to specify the location of all points satisfying one or more conditions. For example, location of set of points equidistant from two given points, location of set of points equidistant from a given point etc. This is..

Introduction - We are already familiar with set theory and mathematical logic from earlier classes. It has already been seen that there is a similarity between the laws stated in set theory and the mathematical logic. The operations 'union', 'intersection' and 'complem..

Introduction - When a chemical reaction gets started the reactants are present in the initial stage, but as the reaction proceeds, the concentration of the reactants decreases and that of products increases. Finally, a stage is reached when no further change in concentration of reactants ..