Notes and Study material for Exams
Electric discharge in gases Electrical discharge through gases is studied by using a specially designed glass tube commonly called as a discharge tube. It consists of a cylindrical glass tube having a side tube, and two metallic electrodes one at each end. These electrodes can be connected to the respective terminals of a … Read more
Ray optics Nature of light Light is a transverse, Electromagnetic Wave that can be seen by humans. The wave nature of light was first illustrated through experiments on diffraction and interference. Like all
Determination of focal length of concave miror by single pin method. [Relation between u-v-f (numerical examples) Spherical mirrors It is a mirror which has the shape of a piece cut out of a spherical surface. Two types of spherical mirrors are; Concave mirror: Its inner concave surface reflects, and has polished outer surface. Convex mirror: … Read more
Corrosion is defined as an attack on a material as a result of chemical, frequently electrochemical reaction, with the surrounding medium. According to this definition, the term corrosion can be applied to all materials, including non-metals. But in practice, the word corrosion is mainly used in Conjunction with metallic materials. Why do metals corrode? Apart … 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
Steroids Steroids are naturally made by our bodies in small amounts. They help to control many functions. But steroids can also be made artificially and used as drugs to treat different diseases, including cancer. Steroids used to treat cancer are usually a type called corticosteroids. These are man made versions of the HORMONES … Read more
Disease is a condition that impairs the proper functioning of the body or its parts. A disease can be defined as: Any deviation from normal functioning or state of complete physical and mental well being. Types of diseases: The human diseases are broadly classified into following four categories: Acute diseases Chronic diseases Congenital diseases Acquired … Read more
Distribution of Mulberry and Non-mulberry Sericulture (area, production and productivity across states), Cocoon Production Sericulture which has its origin in China is an age old Industry in India. Silk route is one of the ancient internationally recognized route for global business for not only silk but also other important commodities. History reveals that silk is … Read more
Gene editing tool CRISPR-cas 9 and emerging new world Vast number of patients suffering from lifelong incurable diseases such as Sickle cell disease , Cystic fibrosis or Haemophilia and many more are at the threshold for a complete reversal of the disease and in near future shall influence favourably the treatment of poorly treated cancer … Read more
[su_posts template=”templates/list-loop.php” posts_per_page=”320″ tax_term=”298″ tax_operator=”0″ order=”desc”] European Space Agency (ESA) Estd. 1975 Intergovernmental organization dedicated to the exploration of space. Planck (Spacecraft):-Planck is a space observatory designed to observe the universe using high sensitivity and angular resolution. It was launched in 2009. In July 2010, the Planck space satellite released the full map of … Read more