Category: Science Tech

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 Read More …

Artificial intelligence Artificial intelligence (AI) refers to the simulation of human intelligence in machines that are programmed to think like humans and mimic their actions. The term may also be applied to any machine that exhibits traits associated with a Read More …

Chemistry in daily life The principles of chemistry have been used for the benefit of mankind. Think of cleanliness  the materials like soaps, detergents, household bleaches, tooth pastes, etc. will come to our mind. Look towards the beautiful clothes, immediately Read More …

Health and Hygiene Maintaining personal hygiene is essential for more than one reason; social, health, personal, psychological or just as a way of life. Maintaining a good standard of hygiene helps keep infections, illnesses and bad odors at bay. The Read More …

Health awareness Programme Health Awareness Campaigns are one of the most functional elements in health system that push people to create that big change to eradicate or lessen the unhealthy impact the health issue. Healthcare Awareness Campaigns are meat to 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 Read More …

Indian Space Research Organization (ISRO) Indian Space Research Organisation (ISRO), was founded in 1969 to develop an independent Indian space program. Its headquarters are in Bangalore. ISRO’s chief executive is a chairman, who is also chairman of the Indian government’s Read More …

Periodic Table  and periodicity Criteria for a new element discovery Assessing if an element has been “discovered” is not a simple task. While reviewing the discovery profiles of the transfermium elements in the early 90s’, IUPAC and IUPAP set up Read More …

Preparation and properties of commonly used dyes Dye, substance used to impart colour to textiles, paper, leather, and other materials such that the colouring is not readily altered by washing, heat, light, or other factors to which the material is Read More …

Work power and energy Work Work is a measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. If Read More …

Terminology related with Sound Amplitude Amplitude, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. The amplitude of Read More …

8 Aviation Almost all modern aircraft are fitted with multiple GPS receivers. This provides pilots and sometimes passengers with a real-time aircraft position and map of each flight’s progress. GPS also allows airline operators to pre-select the safest, fastest and Read More …

Health Education in India Medical education in global context has evolved over a period of time and so in India. With changing community needs, educational advancements and technological revolutions, we need to update the method of imparting knowledge and skills Read More …

Health Problems in India At the face of it, India is a booming economy and one of the fastest growing in the world. Yet, over one third of income is spent towards food and related consumption and hence, social security 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 Read More …

Digital India Digital India is a flagship programme of the Government of India with a vision to transform India into a digitally empowered society and knowledge economy. This programme has been envisaged by Department of Electronics and Information Technology (DeitY) Read More …

? Uses and harms of bacreria Harmful bacteria Pathogenic Bacteria These bacteria cause great losses to plant and animal popula­tion by causing several diseases. Reduction of Soil Fertility Some facul­tative anaerobic bacteria are available mostly in the oxygen deficient Read More …

? Concerns and challenges use of science and technology Digital technology and problems Social Media is an entirely different issue, especially with the upcoming generations. Without Facebook, Snapchat, Twitter, Instagram and more, where would tweens and teenagers find themselves Read More …

? Harmful plants They may look harmless enough, but plants can harbor some of the most deadly poisons known. From the death of Socrates by poison hemlock to the accidental ingestion of deadly nightshade by children, poisonous plants have Read More …

? Excretory System Introduction v  If you exercise on a hot day, you are likely to lose a lot of water in sweat. Then, for the next several hours, you may notice that you do not pass urine as Read More …

? Excretion:In plants Excretion, the process by which animals and plants rid themselves of waste products and of the nitrogenous by-products of metabolism. Through excretion organisms control osmotic pressure—the balance between inorganic ions and water—and maintain acid-base balance. The Read More …

? Diseases related to kidney Abderhalden-Kaufmann-Lignac syndrome Autosomal recessive syndrome of disturbance of amino acid transport characterized by deposition of cystine crystals in numerous tissues of the body, particularly evident in the conjunctiva and cornea. Children in whom cystinosis Read More …

? Control and coordination:Plants and animals All the living organisms respond and react to changes in the environment around them. The changes in the environment to which the organisms respond and react are called stimuli such as light, heat, Read More …

? Photosynthesis Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen Read More …

? Biopesticides Plants, growing in the wild or in cultivation, face numerous threats from insects, bacteria, viruses, and fungi, as well as from other plants. Biopesticides are inert substances or living organisms that can help protect plants from such Read More …

? Matter in our surroundings, Elements, Compounds, Mixtures Matter is any thing which has mass and occupies space. All solids, liquids and gases around us are made of matter. Scientist believe that matter is made of tiny particles that Read More …

? Food preservatives Food preservatives constitute a group of compounds of widely different molecular structures; they are organic and inorganic substances with different functional groups and tendencies to form ions. There are no procedures that are generally applicable to Read More …

? Disaster Management History shows that India is exposed to national disasters. Cyclones, floods, earthquakes, droughts and floods are major threats. About 60 percent of the landmass is prone to earthquakes of various intensities, over 40 million hectares is Read More …

? Types of respiration External Respiration One method for obtaining oxygen from the environment is through external respiration or breathing. In animal organisms, the process of external respiration is performed in a number of different ways. Animals that lack Read More …

? Respiration Respiration is defined as the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction. The physiological definition of respiration is differs from the biochemical Read More …

? Refraction of light Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another.  This bending by refraction makes it possible for us to have Read More …

? Acid An acid is a substance which forms H+ ions as the only positive ion in aqueous solution. Examples:- Hydrochloric acid dissolved in water forms H+ and Cl– ions   HCl —> H+ + Cl–   Sulphuric acid dissolved in water forms Read More …

? Waste Water Management Water, food and energy securities are emerging as increasingly important and vital issues for India and the world. Most of the river basins in India and elsewhere are closing or closed and experiencing moderate to Read More …

? Electric power plant Electricity is produced at a an electric power plant. Some fuel source, such as coal, oil, natural gas, or nuclear energy produces heat. The heat is used to boil water to create steam. The steam Read More …

? Remote sensing- GIS and its application   Remote Sensing Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation. In current usage, Read More …

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? Post harvest technology and value addition in Food Processing While increased productivity is an essential component of a vibrant agricultural sector, improved post-harvest handling and processing is essential to ensure high-quality products reach the markets. Too often, even Read More …

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? General studies of alternating current and direct current Alternating Current Alternating Current (AC) Alternating current describes the flow of charge that changes direction periodically. As a result, the voltage level also reverses along with the current. AC is Read More …

? Electric current Ohm’s law and Resistance   Electrical current is the flow of charged particles. The flow of charges will be constant in current electricity. Electric current flows from higher electric potential to lower electric potential. For the Read More …

? E-learning- IT& Rural applications A learning system based on formalised teaching but with the help of electronic resources is known as E-learning. While teaching can be based in or out of the classrooms, the use of computers and Read More …

? Rain Water Harvesting v  Water forms the lifeline of any society. Water is essential for the environment, food security and sustainable development. v  All the known civilizations have flourished with water source as the base and it is Read More …

? Transgenic animals Transgenic animals are animals that have been cloned. The medical and biotechnological uses of animal cloning are almost innumerable, as many diseases have been eradicated thanks to the production of these transgenic animals. Transgenic animals development Read More …

? Engineering plastics Engineering plastics are a group of plastic materials that have better mechanical and/or thermal properties than the more widely used commodity plastics (such as polystyrene, PVC, polypropylene and polyethylene).  Being more expensive, engineering plastics are produced Read More …

? National Seed Policy The Seed Act, 1966, seed control order 1983 and New Policy on Seeds Development, 1988, from the basis of promotion and regulation of the Indian Seed Industry. The “New Seed Policy” of 1988 ushered in Read More …

? India’s Missile program   Introduction India’s missile programme took a shot from space programme, beginning 1967.   In 1972, Rohini- a 560 two-stage, solid propulsion sounding rocket was developed and test fired India first launched its small 17-tonne Read More …

? Primary and secondary cells their properties and drawback Primary Cell Primary cells are those that cannot be recharged and needs to be discarded after the expiration of their lifetime. If the electrolyte is not in liquid form, we Read More …

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? Food safety and Microbial standards, Food quality standards Food safety-Indicators of food microbial Quality and safety-Coliforms, Enterococci, Bifidobacteria, Coliphages/Enteroviruses, predictive Microbiology/ Microbial modeling Microbial Standards of Processed and preserved Foods The Center for disease control (CDC) investigates each Read More …

? National Cyber Crime Policy Cyberspace is a complex environment consisting of interactions between people, software and services, supported by worldwide distribution of information and communication technology (ICT) devices and networks. In the light of the growth of IT Read More …