Era Of Atomic Age Begin Part-2/2

Era Of Atomic Age Begin Part-2/2 To keeps such a chain reaction under control it was necessary to keep the reproductive ratio of neutrons at optimal levels. Fermi had carried out certain experiments in July 1941, to obtain measurements of Read more

Era Of Atomic Age Begin Part-1/2

Era Of Atomic Age Begin Part-1/2 The atomic age dawned exactly at 25 minutes past 3 O’clock in the afternoon of 2nd December 1942. Even the birthplace can be stated without any ambiguity. It happened at the squash courts beneath Read more

Who was the Indian Edison?

Who was the Indian Edison? Around the middle of the nineteenth century, some hesitant creative sparks were ignited in a sporadic manner. In the fields of science and technology emergence of people like Jagadish Chandra Bose, Prafulla Chandra Ray and Read more

The States of Matter

The States of Matter Prologue Physical science, which includes chemistry and physics, is usually thought of as the study of the nature and properties of matter and energy in non-living systems. A matter is the “stuff” of the universe — Read more

12 Major Rivers of India

12 Major Rivers of India Rivers are not considered to be the only source of water, but many rivers are considered to be goddesses. Many mythological stories are related to them. Actually, there are unique stories associated with each river. Read more

How the Risis (ऋषि)  Lived 

How the Risis (ऋषि)  Lived  The life they lived, these people who taught the Upanishads, was a very simple life, mostly. But sometimes these teachings were originally given by kings who lived in the luxury of a palace. There is Read more

How the concept of energy evolved?

How the concept of energy evolved? The word energy appeared in English in the late sixteenth Century. In the 1580s, writers used the term ‘energy to describe a vigorous use of Speech or writing. It took another two and a Read more

UPSC Maths (Optional) Last Year Papers

UPSC Maths (Optional) Last Year Papers                   Year Wise Papers– 2018 Paper-1 Paper-2 2017 Paper-1 Paper-2 2016 Paper-1 Paper-2 2015 Paper-1 Paper-2 2014 Paper-1 Paper-2  2013 Paper-1 Paper-2 2012 Paper-1 Paper-2 2011 Paper-1 Read more