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 set of a..

The branch of physics which deals with magnetism due to the electric current is called electromagnetism. For a long time it was hard to believe if there existed a relation between electricity and magnetism. Hans Christian Oersted observation made a discovery demonstrating a close relationship betwe..

. Earth's atmosphere in its present form, is evolved and even now being influenced by earth's movement on its axis as well as sunlight. These two parameters decide what type of atmosphere we have now - its composition as well as the total height of atmospheric cover around the earth. Such an atmosp..

Introduction - A set of numbers arranged in a definite order according to some definite rule is called a sequence . Sequences have wide applications. For example, the amount of money in a fixed deposit in a bank, over a number of years increases in a sequenc..

"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 of mix and match. As electricity is invo..

"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 of mix and match. As electricity i..

Grammar may be roughly defined as the way a language manipulates and combines words (or groups of words) in order to form longer, meaningful units. For example, in English, the present form of the verb 'be' in the third person has two distinct forms, one (is) being used with a singular subject, an..

Introduction - A set of numbers arranged in a definite order according to some definite rule is called a sequence . Sequences have wide applications. For example, the amount of money in a fixed deposit in a bank, over a number of years increases in a sequenc..

Introduction - The sets of numbers which every student must remember are: The set of natural numbers N = {1, 2, 3, 4, 5, } The set of whole numbers W = {0, 1, 2, 3, 4, 5,} The set of integers Z = I = {, -3, -2, -1, 0, 1, 2, 3,} The set of ..

Introduction - Circular Motion - Circular motion is commonly seen in both microscopic and large systems. Motion of the electron, planetary motion and rotation of tyres are common examples of circular motion. What is circular motion? It is a type of motion exhibited by a particle or s..