Nuclear Tech Terms, Radioactivity And Its Application

 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 … Read more

Ideal Fuel Properties

 Fuels are any material that store potential energy in forms, which upon burning in oxygen liberates heat energy. Calorific value of fuel is the total quantity of heat liberated when a unit mass or volume of fuel is completely burnt. Higher or gross calorific value (HCV) in the total amount of heat produced … Read more


 Vermiculture Vermiculture means artificial rearing or cultivation of worms (Earthworms) and the technology is the scientific process of using them for the betterment of human beings. Vermicompost is the excreta of earthworm, which is rich in humus. Earthworms eat cow dung or farm yard manure along with other farm wastes and pass it … Read more


 Vaccines A vaccine is a biological preparation that improves immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism, and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. The agent stimulates the body’s immune system to … Read more

Usefulness Of Plants And Human Affairs

 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

Usefulness Of Animals And Human Affairs

 Usefulness of animals and human affairs As food The human population exploits a large number of animal species for food, both of domesticated livestock species in animal husbandry and, mainly at sea, by hunting wild species.  Marine fish of many species, such as herring, cod, tuna, mackerel and anchovy, are caught commercially, forming … Read more

Use Of I.T. In Various Services

 Use of I.T. in various services An important application of information technology is video on demand. It is very common now a days. The cable tv operator provides services to watch any video clipping, movie or any favourite tv program. The channel is established from the computer at home and the cable operator. … Read more

Universalizing Science And Technology Literacy (2)

 Universalizing Science and Technology literacy Scientific and technological literacy, in its broadest sense, means much more than simply being able to read, understand and write about science and technology, however important these are.  STL also includes the ability to apply scientific and technological concepts and process skills to the life, work and culture of … Read more

Type Of Nuclear Reactors

   QUICK REVISION ( ARTICLE:3, SCIENCE): TYPE OF NUCLEAR REACTORS   COMPONENTS OF NUCLEAR REACTOR:   Fuel: Usually pellets of uranium oxide (UO2) arranged in tubes to form fuel rods. The rods are arranged into fuel assemblies in the reactor core   • Moderator: This is material which slows down the neutrons released … Read more

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