Science Tech

 Facing Global Competition Globalisation means gradual integration of economies through free movement of goods, services and capital which has significant impact on the economies of both developed and developing countries. Globalisation refers to a process of growing economic interdependence among different countries of the world. Thus, in the globalised era, the whole world … Read more

Medium of Propagation Sound is a sequence of waves of pressure which propagates through compressible media such as air or water. During their propagation, waves can be reflected, refracted, or attentuated by the medium. The purpose of this experiment is to examine what effect the characteristics of the medium have on sound. Ground Wave or … Read more

 Food and Human Health : General Awareness of Balanced and Unbalanced Food Food has been a basic part of our existence. By knowing the food composition , the nutritional content of food is known. Intake of food ensures growth in children and youth, maintains good health throughout life, meets special needs of pregnancy … Read more

 Respiratory quotient: Carbohydrates, fats and protein The respiratory quotient (or RQ or respiratory coefficient), is a dimensionless number used in calculations of basal metabolic rate (BMR) when estimated from carbon dioxide production. It is calculated from the ratio of carbon dioxide produced by the body to oxygen consumed by the body. Such measurements, … Read more

 Institutional structure for development of nuclear technology in India The huge potential of the atom had been envisioned in India in the ancient times and references to the same can be found in some of the ancient scriptures. Such references provide us a tantalizing glimpse into the ancient Indian history and, indeed, into … Read more

 PSCNOTES- Science Updated Nanotechnology and its applications The concept “Nanotechnology” was first proposed by Richard Feynman on 29th December, 1959 in his talk entitled “There’s plenty of room at the bottom” at the California Institute of Technology. Deriving its name from the Greek word “dwarf” meaning small, nanotechnology is commonly defined as … Read more

 Importance of Science & Technology as an engine for national development- Industrial development & Urbanization Professor Freeman J. Dyson, of Institute of Advanced Studies, Princeton, in his book “Infinite in all Directions,” had this to say about Technology: “Technology is a gift of God. After the gift of Life, it is perhaps the … Read more

Heat: Measuring Temperature, Thermometers, Transformation of Heat Heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder. The effect of this transfer of energy usually, but not … Read more

 Tissue culture Tissue culture, a method of biological research in which fragments of tissue from an animal or plant are transferred to an artificial environment in which they can continue to survive and function. The cultured tissue may consist of a single cell, a population of cells, or a whole or part of … Read more

 Usefulness of plants and human affairs (utility) Food Plants are the main source of food for humans. Plants, unlike humans and animals, manufacture their own food. They do so by the process known as photosynthesis in their green leaves by use of sunlight.  They can convert and store the light energy in the … Read more