Notes and Study material for Exams
Occupational diversification and social structure Liberalization and society The policy of liberalisation that India has been following since the late 1980s have had a very significant impact on agriculture and rural society. The policy entails participation in the World Trade Organisation (WTO), which aims to bring about a more free international trading system … Read more
The Global Positioning System consists of 24 satellites, that circle the globe once every 12 hours, to provide worldwide position, time and velocity information. GPS makes it possible to precisely identify locations on the earth by measuring distance from the satellites. GPS allows you to record or create locations from places on the earth and … Read more
Radio activity Radioactivity is a physical process. As the name implies it is the act of emitting radiation spontaneously. In simple terms if atomic nucleus is unstable and want to loose some energy, it will release energy in the form of radiations. There are several types of particles or waves that may shoot out of … Read more
Sound is a longitudinal wave, in which the particles oscillate to and fro in the same direction of wave propagation. Sound waves cannot be transmitted through vacuum. The transmission of sound requires at least a medium, which can be solid, liquid, or gas. Newton to derive a relation for the velocity of sound in a gaseous … Read more
Remote sensing: principles, electromagnetic spectrum, components and applications Remote sensing, also called earth observation, refers to obtaining information about objects or areas at the Earth’s surface without being in direct contact with the object or area. Humans accomplish this task with aid of eyes or by the sense of smell or hearing; so, remote sensing … Read more
Combustion and Incineration: A Comprehensive Overview Combustion and incineration are two closely related processes that involve the rapid chemical reaction between a substance and an oxidant, typically oxygen, producing heat and light. While both processes involve burning, they differ in their applications, objectives, and environmental implications. This article delves into the intricacies of combustion and … Read more
Electromagnetic Wave Electromagnetic Wave are waves composed of undulating electrical fields and magnetic fields. The different kinds of Electromagnetic Waves, such as Light and radio waves, form the electromagnetic spectrum. All electromagnetic waves have the same speed in a vacuum, a speed expressed by the letter c (the speed of light) and equal to about … Read more
Pyrolysis and Gasification: Transforming Waste into Energy and Resources Introduction The world faces a growing challenge in managing its waste. Landfills are overflowing, and the environmental impact of waste disposal is becoming increasingly alarming. Simultaneously, the demand for energy and resources continues to rise. Pyrolysis and gasification offer promising solutions to these challenges, providing a … Read more
Quick Revision ( Science Series, Art 2): Nuclear Technology, Radioactivity And Its Application Nuclear technology: Nuclear technology is technology that involves the nuclear reaction of atomic nuclei. Among the notable nuclear technologies are Nuclear Reactors, nuclear medicine and nuclear weapons. BASIC CONCEPTS: Nuclear Energy: The energy produced due to changes in the … Read more
Harnessing the Sun’s Power: A Deep Dive into Solar Thermal Technology The sun, a constant source of energy, has long been recognized as a potential solution to our global energy needs. Solar thermal technology, which harnesses the sun’s heat to generate energy, offers a promising path towards a sustainable future. This article delves into the … Read more